Blue Phantom Manual - uthgsbsmedphys.org

Blue Phantom Manual

NOTICE 

This manual is an integral part of the Blue Phantom as a measuring device and should always be kept nearby. 

Observance of the manual is required for proper performance and correct operation of the Blue Phantom. The Blue 

Phantom and its accessories must not be used for any other purpose than described in the accompanying 

documentation (intended use). Violation will result in loss of warranty. 

The use of the Blue Phantom and any other equipment described in this document, the generated data, as well as the 

validation of the data prior to clinical use remains the sole responsibility of the user. Scanditronix-Wellhöfer and its 

distributors disclaim all warranties, either expressed or implied, including (but not limited to) any implied warranties 

of fitness for a particular purpose and noninfringement. Additional statements such as presentations, whether oral or 

written, do not constitute warranties by Scanditronix-Wellhöfer and should not be relied upon. 

Scanditronix-Wellhöfer does not accept liability for injury to personnel or damage to equipment that may result 

from misuse of this equipment, failure to observe the hazard notices contained in this manual or failure to observe 

local health and safety regulations. 

No part of the accompanying documentation may be translated or reproduced without written permission of 

Scanditronix-Wellhöfer, unless the reproduction is carried out for the sole purpose to be used by several people in 

the same department. 

The user must treat the accompanying documentation like any other copyrighted material. Especially, if part of the 

accompanying documentation is provided in electronic form, these files shall not be modified in any way. 

Scanditronix-Wellhöfer and its suppliers retain title and all ownership rights to the accompanying documentation 

(either in electronic or in printed form). 

Copyright © 2001 by Wellhöfer Dosimetrie GmbH. 

IBA Advanced Radiotherapy 

www.iba-ar.com 

Wellhöfer Dosimetrie GmbH 

Bahnhofstraße 5 

D-90592 Schwarzenbruck 

Germany 

Phone: +49 9128 607-0 

Fax: +49 9128 607-10 

mailto: info@wellhofer.com 

Scanditronix Medical AB 

Stålgatan 14 

SE-754 50 Uppsala Sweden 

Phone: +46 18 18 07 00 

Fax: +46 18 12 75 52 

mailto: sales@scxmedical.se 

2 • Notice [DWA000 90001 02] Blue Phantom Manual

Table of Contents 

Table of Contents....................................................................................... 3 

Introduction................................................................................................. 7 

The Blue Phantom...................................................................................7 

The Blue Phantom Manual.......................................................................7 

Health and Safety Information........................................................7 

Hardware description ....................................................................7 

Installation....................................................................................7 

Setting up for measurement ..........................................................7 

Maintenance.................................................................................8 

Specifications ...............................................................................8 

Appendix A ..................................................................................8 

Associated documentation .......................................................................8 

Health and safety information ................................................................ 9 

General...................................................................................................9 

Safety labels ......................................................................................... 10 

AquaLift ..................................................................................... 10 

Blue Phantom ............................................................................ 11 

Electrical Lift Table..................................................................... 11 

Rating labels ......................................................................................... 12 

Responsibility........................................................................................ 13 

Regulatory requirements........................................................................ 13 

Safety Precautions ................................................................................ 14 

Reporting complaints............................................................................. 14 

Hardware Description.............................................................................15 

Introduction........................................................................................... 15 

Hardware................................................................................... 15 

Software.................................................................................... 15 

Blue Phantom ....................................................................................... 17 

Connectors on the Blue Phantom................................................ 18 

The Hand Control....................................................................... 18 

Description of the buttons on the hand control.............................. 19 

Description of the LEDs on the hand control................................. 21 

CU500E (Control Unit)........................................................................... 21 

Manual Controls......................................................................... 21 

Blue Phantom Manual [DWA000 90001 02] Table of Contents • 3

Connectors................................................................................ 22 

AquaLift (option).................................................................................... 23 

Control panel ............................................................................. 24 

Support screws .......................................................................... 24 

Mains power cable ..................................................................... 25 

Tubing....................................................................................... 25 

Electrical Lift Table (option).................................................................... 26 

Introduction ............................................................................... 26 

Manual Lift Table (option) ...................................................................... 27 

Introduction ............................................................................... 27 

Water Reservoir with bi-directional pump ................................................ 28 

Introduction ............................................................................... 28 

TMR Probe (option)............................................................................... 30 

Detectors (option).................................................................................. 31 

Introduction ............................................................................... 31 

Semiconductor detectors ............................................................ 31 

Field detector for electrons ......................................... 31 

Field detector for photons........................................... 31 

Field detector, stereotactic beam................................ 32 

Reference detector .................................................... 32 

Ionisation chambers ................................................................... 32 

CC Chambers (Compact chambers) ........................... 32 

PPC Chambers (Plane parallel chambers)................... 33 

FC Chambers (Farmer type chambers)....................... 33 

NACP Chamber......................................................... 33 

RK Chamber ............................................................. 33 

MD240 24-channel electrometer (option) ................................................ 34 

Introduction ............................................................................... 34 

Connectors................................................................................ 35 

Keys on the MD240 front side..................................................... 35 

CAN Bus board.......................................................................... 36 

CA24 Chamber Array (option) ................................................................ 37 

Blue Phantom Cable Support...................................................... 37 

Other options ........................................................................................ 38 

Treatment head scanning servos ................................................ 38 

The one-dimensional headscanner HSC 1D ................................ 38 

Connectors on the HSC 1D ........................................................ 38 

The two-dimensional headscanner HSC 2D................................. 39 

Installation................................................................................................. 41 

Introduction........................................................................................... 41 

Unpacking and Installation ..................................................................... 41 

General unpacking instructions ................................................... 41 

AquaLift..................................................................................... 42 

Tools and accessories ............................................... 42 

Unpacking AquaLift.................................................... 42 

Check Lifting function................................................. 43 

Check Pumping function ............................................ 44 

Electrical Lift Table..................................................................... 45 

Unpacking Electrical Lift Table.................................... 45 

Manual Lift Table ....................................................................... 46 

Unpacking Manual Lift Table ...................................... 46 

Safety Precautions (Electrical and Manual Lift Table)................... 46 

Water Reservoir......................................................................... 47 

Unpacking Water Reservoir........................................ 47 

Safety Precautions..................................................... 47 

Putting into operation for the first time ......................... 48 

Blue Phantom............................................................................ 49 

4 • Table of Contents [DWA000 90001 02] Blue Phantom Manual

Unpacking the Blue Phantom ...................................................... 49 

Blue Phantom Installation ........................................................... 50 

Device connection overview........................................................ 50 

Blue Phantom and TMR probe .................................................... 51 

Blue Phantom, CU500E and PC.................................................. 52 

MD240 and CAN Bus interface.................................................... 54 

Installation of the PCI CAN Bus board and driver .............. 54 

Connecting the MD240.................................................... 54 

Installation Verification (Blue Phantom, CU500E).................................... 55 

Servo movement ........................................................................ 55 

Electrometer Control................................................................... 57 

High Voltage .............................................................................. 57 

Installation Verification (CAN Bus board, MD240) .................................... 58 

Setting up for measurement.................................................................59 

Introduction........................................................................................... 59 

Blue Phantom and AquaLift.................................................................... 60 

Place Blue Phantom on AquaLift ................................................. 60 

Fill Blue Phantom....................................................................... 61 

Adjust SSD................................................................................ 62 

Empty Blue Phantom.................................................................. 62 

Blue Phantom and Lift Table / Water Reservoir ....................................... 63 

Place Blue Phantom on Lift Table................................................ 63 

Fill Blue Phantom....................................................................... 64 

Adjust SSD................................................................................ 65 

Empty Blue Phantom.................................................................. 65 

Control Cables ...................................................................................... 66 

Detectors .............................................................................................. 67 

Field and Reference Detector explanation.................................... 67 

Field detector............................................................................. 67 

Reference detector..................................................................... 68 

Comments on beam direction...................................................... 68 

Fine-Levelling the Blue Phantom ............................................................ 69 

Setup for TPR/TMR measurements........................................................ 72 

CA24 Chamber Array and MD240 Electrometer ...................................... 74 

CA24 adapter set description ...................................................... 75 

Mounting the CA24 in the Blue Phantom...................................... 76 

Mounting the CA24 cable support................................................ 77 

CA24 measurement setup .......................................................... 80 

Setup for in-air measurements ............................................................... 84 

Headscanner servos HSC 1D and HSC 2D.................................. 84 

General.......................................................................... 84 

Possible measurement types........................................... 84 

Installing the headscanner and detectors ......................... 84 

Mounting of Build-up layers and Wedge........................... 85 

Measurement Setup........................................................ 85 

Attachments and accessory holders................................. 86 

Maintenance..............................................................................................93 

Introduction........................................................................................... 93 

Daily Check .......................................................................................... 94 

AquaLift and Water Reservoir ..................................................... 94 

Monthly maintenance............................................................................. 94 

Blue Phantom ............................................................................ 94 

HSC 1D and HSC 2D................................................................. 95 

AquaLift, Water Reservoir, Lift Table ........................................... 95 

Blue Phantom Manual [DWA000 90001 02] Table of Contents • 5

Yearly Maintenance............................................................................... 96 

Blue Phantom............................................................................ 96 

Checking positioning accuracy ................................... 96 

HSC 1D and HSC 2D................................................................. 96 

Checking positioning accuracy ................................... 96 

Lift Table................................................................................... 97 

Mechanical parts ....................................................... 97 

Electrical control unit (Electrical Lift Table only)........... 97 

Hand control (Electrical Lift Table only) ....................... 97 

Water Reservoir......................................................................... 98 

2-yearly maintenance............................................................................ 98 

AquaLift..................................................................................... 98 

Replacing spare parts............................................................................ 99 

CU500E and MD240 .................................................................. 99 

Replacing mains fuse................................................. 99 

Water Reservoir........................................................................100 

Resetting automatic fuse...........................................100 

AquaLift....................................................................................101 

Removing cover........................................................101 

Replacing fuses ........................................................102 

Resetting automatic fuse...........................................102 

Replacing the impeller...............................................103 

Electrical Lift Table....................................................................104 

Replacing the electrical control unit............................104 

Specifications.........................................................................................109 

General ...............................................................................................109 

Standard Equipment.............................................................................109 

Accessories .........................................................................................110 

In-Air Scanner ...........................................................................110 

Detectors ..................................................................................110 

Technical Data.....................................................................................111 

CU500E ...................................................................................111 

Serial cable ..............................................................................113 

Blue Phantom...........................................................................113 

Accessories..............................................................................114 

In-air Headscanner HSC 1D......................................114 

In-air Headscanner HSC 2D......................................114 

AquaLift ...................................................................114 

Electrical Lift Table ...................................................115 

Water Reservoir........................................................115 

CA24 .......................................................................116 

MD240.....................................................................117 

TMR Probe...............................................................118 

Appendix A - Complaint report ..........................................................119 

Reporting complaints............................................................................119 

6 • Table of Contents [DWA000 90001 02] Blue Phantom Manual

Introduction 

The Blue Phantom 

The Blue Phantom Manual 

The Blue Phantom is a measuring device for the measurement and analysis of the 

radiation field of medical linear accelerators and is part of the OmniPro-Accept 

system. It consists of a three-dimensional servo (the Blue Phantom tank with 

mechanics), a Control Unit with integrated two channel electrometer (CU500E), 

and two single detectors (ionisation chambers). As an option, a linear chamber 

array (CA24) with 24-channel electrometer (MD240) is available. 

With an additional one-dimensional (HSC 1D) or two-dimensional servo (HSC 

2D) and a support for mounting on the gantry of a treatment machine, the system 

can be used for in-air measurements. 

Detector systems that can be attached to the Blue Phantom include single 

semiconductor detectors, cylindrical and plane parallel ionis ation chambers. 

The Blue Phantom Manual is intended for the physicist or engineer working with 

regular quality control of radiation therapy equipment. It assumes that the 

operator has a working knowledge in radiation physics and dosimetry. 

It is further assumed that the operator is used to working with treatment 

machines and accessories. 

This manual contains a brief system overview, instructions for installation, setup 

and operator maintenance. Refer to your Scanditronix-Wellhöfer distributor 

for all questions regarding service and support. 

The contents of this manual are as follows: 

Health and Safety Information 

Describes the hazards associated with the equipment. All personnel must read 

this chapter and be fully aware of its contents. 

Hardware description 

Gives an overview of the components in the Blue Phantom. 

Installation 

Provides instructions for installing and verifying the function of the hardware of 

the Blue Phantom. 

Setting up for measurement 

Describes the setup of the Blue Phantom for measurements in the beam. 

Blue Phantom Manual [DWA000 90001 02] Introduction • 7

Maintenance 

Provides instructions for operator maintenance. 

Specifications 

Contains technical data for the Blue Phantom and its accessories. 

Appendix A 

Associated documentation 

Contains complaint report forms that should be used to report any complaints 

about the Blue Phantom. 

• OmniPro-Accept System Manual: provides instructions for dosimetry 

measurements using the Blue Phantom. 

Further specific user's guides exist for different ionisation chambers, providing 

information on materials and dimensions of these chambers and correction 

factors for absolute dosimetry. 

8 • Introduction [DWA000 90001 02] Blue Phantom Manual

Health and safety information 

General 

IMPORTANT NOTICE 

All personnel must read this chapter and be fully aware of its 

contents before commencing installation work, and before 

operating or servicing the Blue Phantom. 

If the Blue Phantom is used in a way not specified by Scanditronix- 

Wellhöfer, the protection provided by the equipment may be 

reduced. 

The purpose of this chapter is to identify the hazards associated with the 

equipment. This information is presented by showing all safety and rating labels 

which are attached to the equipment, and providing instructions to avoid the 

associated hazards. Throughout the manual, hazardous situations or operations 

are identified by Warning and Caution Notices, where: 

• Warning notices describe hazardous conditions where failure to observe the 

instructions may result injury to persons. 

• Caution notices describe hazardous conditions where failure to follow the 

instructions may result in damage to equipment or stored data. 

In addition to Warnings and Cautions, certain information is emphasised in 

Important Notices and Notes: 

• Important Notices contain instructions on the use of this manual, especially 

regarding health and safety information. 

• Notes contain additional information and explanations, which are not safety 

issues. 

Blue Phantom Manual [DWA000 90001 02] Health and safety information • 9

Safety labels 

AquaLift 

Caution Consult accompanying documents 

This label alerts the user to consult this manual before using the 

equipment. If the equipment is not handled according to the instructions 

in this manual and other accompanying documents, the protection 

provided by the equipment may be reduced. 

Caution Protective earth connection 

WARNING HEAVY OBJECT 

The pump box cover on AquaLift must always be connected to the 

carriage assembly by an earth wire. The mounting screw for the earth 

wire is marked with the symbol shown here. 

AquaLift weights up to 500 kg when filled with water. Follow the 

instructions on the labels to avoid personal injury or damage to 

equipment. 

WARNING - PINCH HAZARD 

AquaLift weights up to 500 kg when filled with water. Keep 

your feet away from the wheels when moving AquaLift. 

Always lock AquaLift with support screws during use. 

WARNING - HAZARD DURING TRANSPORT 

With filled water reservoir, AquaLift may be difficult to stop 

on inclined floors. 

Always empty the water reservoir before transporting 

AquaLift over inclined surfaces. 

WARNING MOVING PARTS (AQUALIFT) 

Follow the instructions on the label to avoid injury to fingers. 

WARNING - PINCH HAZARD 

The lifting table moves close to the equipment shelf. 

Keep hands away from the equipment shelf when operating 

the lifting table. 

10 • Health and safety information [DWA000 90001 02] Blue Phantom Manual

Blue Phantom 

WARNING MOVING PARTS (BLUE PHANTOM) 

Follow the instructions on the label to avoid injury to fingers. 

Electrical Lift Table 

WARNING PINCH HAZARD 

CAUTION - keep your hands out during movement of the mechanics 

Keep your hands away from the area below the platform when 

lowering the lift table. When the platform reaches the lowest 

position, your hand may be jammed between the platform and the 

lift table's housing. 

KEEP YOUR HANDS AWAY 

WHEN MOVING THE PLATFORM 


Rating labels 

Rating labels are attached to the following products: 

• CU500E, 

• MD240 Electrometer, 

• AquaLift, 

• Electrical Lift Table and Water Reservoir, 

• TMR Probe. 

WARNING HAZARDOUS VOLTAGES 

Pay attention to the voltage ratings on the rating labels. These 

determine the safety hazards for components connected to the 

supply voltages. Do not open covers. 

Normally, the labelling consists of identification and electrical rating, as shown 

below. 

Figure 1. Typical rating label. 


Responsibility 

WARNING DATA EVALUAT ION RESPONSIBILITY 

The person managing the Blue Phantom bears the full responsibility 

for critically evaluating every measurement result and/or 

manipulating measurements before transferring the data to a 

treatment planning system. 

Caution Assembly and Repairs, Accessories 

Regulatory requirements 

Assembly, extension, modification or repair shall only be carried out by 

Scanditronix-Wellhöfer or by persons who have sufficient knowledge and 

skills and are authorised by Scanditronix-Wellhöfer. For repairs, only 

spare parts provided or approved by the manufacturer must be used, 

otherwise operator safety, specified measuring accuracy and interference 

free operation cannot be guaranteed. Violation of this prescription will 

result in loss of warranty. 

Scanditronix-Wellhöfer cannot be held liable for any damages resulting 

from the use of accessories or consumables which are not provided or 

approved by the manufacturer. 

The Blue Phantom fulfils the requirements of the following European directive 

and standards: 

• Medical Devices Directive 93/42/EEC, 

• EN 60601-1, Safety requirements for medical electrical systems, 

• EN 60 601-1-2, Electromagnetic compatibility - requirements and tests, 

• IEC 60731, Medical electrical equipment - Dosimeters with ionisation 

chambers as used in radiotherapy. 

The quality assurance system at Wellhöfer Dosimetrie GmbH is certified since 

1995 according to DIN EN ISO 9001 and DIN EN 46001. 


Safety Precautions 

Reporting complaints 

1. The Blue Phantom should only be used by people who are: 

• aware of and understand the limitations of the device as they relate to 

the measurement of radiation output, 

• knowledgeable about safety procedures observed when working with 

radiation sources such as Cobalt-60 machines or linear accelerators, 

• aware of safety precautions required to avoid possible injury when 

using electrical / electronic equipment. 

2. Before using the Blue Phantom, the operator must ensure that it is correctly 

connected and in proper working condition. The user must verify the general 

functionality, safety and duly condition of the tank, the mechanics, 

electronics and the detector(s). 

3. Never connect or disconnect an ionisation chamber or a chamber extension 

cable to or from a dosimeter or electrometer unless the high voltage is 

switched off. 

4. The Blue Phantom including all accessories is a sensitive measuring system 

and must be stored in a clean, dry, preferably air-conditioned area at room 

temperature. Protect it from mechanical and thermal stress and unnecessary 

moisture. Mount the protection caps where provided. 

Note: Devices on which moisture has developed as a result of temperature 

changes must not be used unless they have been completely dried. 

5. The electrical installations of the relevant rooms must comply with IEC 

recommendations. 

6. Use only detectors which are designed according to the electrical connection 

convention (floated input technology) required by the CU500E. The 

connection of detectors which are designed for grounded input technology, 

even by means of adapters, causes unsafe and hazardous conditions and is 

generally not permitted. 

The Quality Assurance system of Scanditronix-Wellhöfer includes a routine to 

handle any reported complaints. 

The user shall report all complaints about the system to any representative of 

Scanditronix-Wellhöfer or directly to: 




Germany 

Phone: +49 9128 607-0, Fax: +49 9128 607-10 


A complaint should be reported in the enclosed form Complaint Report Blue 

Phantom. Three copies of the form are included in Appendix A of this manual. 

Always keep one copy of the form in this manual. If needed, make more 

photocopies of the form. If there is no copy of the form, make a written report 

describing the fault as specifically as possible. 


Hardware Description 

Introduction 

Hardware 

The Blue Phantom consists of a Control Unit (CU500E), a water phantom with 

three-dimensional servo and an optional chamber array (CA24) with its 24channel 

electrometer (MD240). 

The CU500E can also be used with a one-dimensional or two-dimensional servo 

for in-air measurements on a gantry. 

Detector systems which can be used with the Blue Phantom include single 

semiconductor detectors, chamber array (CA24), cylindrical ionisation chambers 

as well as plane-parallel ionis ation chambers. 

Software 

The OmniPro-Accept software provides functions for easy set-up and overview 

of equipment and measurements. 

The OmniPro-Accept software runs under the following operating systems: 

Windows 98, Windows NT SP3 or higher, Windows 2000 SP1. For operating 

instructions, refer to the OmniPro-Accept System Manual. 

Blue Phantom Manual [DWA000 90001 02] Hardware Description • 15

Control Unit CU500E 

Electrometer MD240 The Blue Phantom 

TMR Probe 

Compact ionisation chamber 

Semiconductor field detector 

Farmer 2571 

Semiconductor reference detector 

Cylindrical / thimble chamber 

Plane parallel ionisation chamber 

Chamber Array CA24 Single Detectors 

Figure 2. The Blue Phantom. 

16 • Hardware Description [DWA000 90001 02] Blue Phantom Manual


The Blue Phantom comprises a three-dimensional high precision servo 

mechanism and a Perspex water tank. On the horizontal X-rail there is a sliding 

shoe on which detector holders for various detectors can be mounted. The field 

detector can be positioned in all three dimensions for measuring both horizontal 

and vertical beams. 

Every dimension is equipped with a calibrated stainless steel ruler, so that the 

accurate positioning can always be verified. 

The motors of the three dimensions are combined with potentiometers providing 

real-time feedback of the current position. 


The connector box contains connectors for the three motors/potentiometers, the 

drive control cable, the hand control, and the TMR equipment. 

Figure 4. The connector box. 

Hand 

control 

Connector 

box 

Water 

tank 


Connectors on the Blue Phantom 

The following connectors are located on the connector box of the Blue Phantom: 

PUMP CONTROL Remote control output used for the connection to 

the AquaLift or the Water Reservoir during 

TPR/TMR measurements. 

TMR Input for Water Level Transducer. 

REMOTE CONTROL Input for the hand control. 

DRIVE CONTROL Connector for the 37-pin controller cable from 

the CU500E. 

X-DRIVE Connector for the x-drive motor / potentiometer. 

Z-DRIVE Connector for the z-drive motor / potentiometer. 

Y-DRIVE Connector for the y-drive motor / potentiometer. 

The Hand Control 

Figure 5. The hand control. 


Description of the buttons on the hand control 

Storage Entry. Pressing this button in combination with the 

isocenter, the water surface or one of the limit buttons stores the 

actual detector position as isocenter, water surface or external limit. 

Position A. By pressing SE and this button, you can store the actual 

detector position for later use. Pressing this button alone moves the 

detector to the position which has been previously stored. 

Position B. By pressing SE and this button, you can store the actual 



Position C. By pressing SE and this button, you can store the actual 



Position D. By pressing SE and this button, you can store the actual 



Isocenter. By pressing SE and this button, you can store the actual 

detector position as isocenter. Pressing this button alone moves the 

detector to the actual isocenter position. 

Water Surface. By pressing SE and this button, you can store the 

actual detector position as water surface. Pressing this button alone 

moves the detector to the actual water surface position. 

Upper X Limit. By pressing SE and this button, you can store the 

actual detector position as upper limit in X direction. Pressing this 

button alone moves the detector to the actual upper X limit. 

Upper Y Limit. By pressing SE and this button, you can store the 

actual detector position as upper limit in Y direction. Pressing this 

button alone moves the detector to the actual upper Y limit. 

Upper Z Limit. By pressing SE and this button, you can store the 

actual detector position as upper limit in Z direction. Pressing this 

button alone moves the detector to the actual upper Z limit. 

Lower X Limit. By pressing SE and this button, you can store the 

actual detector position as lower limit in X direction. Pressing this 

button alone moves the detector to the actual lower X limit. 

Lower Y Limit. By pressing SE and this button, you can store the 

actual detector position as lower limit in Y direction. Pressing this 

button alone moves the detector to the actual lower Y limit. 

Lower Z Limit. By pressing SE and this button, you can store the 

actual detector position as lower limit in Z direction. Pressing this 

button alone moves the detector to the actual lower Z limit. 


Detector Movement in +X direction. Pressing this key and 

holding it causes a slow detector movement in +X direction. 

Detector Movement in +Y direction. Pressing this key and 

holding it causes a slow detector movement in +Y direction. 

Detector Movement in +Z direction. Pressing this key and 

holding it causes a slow detector movement in +Z direction. 

Detector Movement in -X direction. Pressing this key and 

holding it causes a slow detector movement in -X direction. 

Detector Movement in -Y direction. Pressing this key and 

holding it causes a slow detector movement in -Y direction. 

Detector Movement in -Z direction. Pressing this key and 

holding it causes a slow detector movement in -Z direction. 

Fast Detector Movement. Pressing this key in combination with 

one of the six slow movement keys above causes a fast detector 

movement in the respective direction. 

Switch to TMR mode. Pressing these two keys 

switches the Blue Phantom into TMR mode (hand control 

beeping). Works only if both transducer and cable to 

water reservoir are connected. 

Note: It is not required to do this before starting a TMR 

measurement. The software switches the Blue Phantom in 

TMR mode automatically. 

Switch to normal mode. Pressing these two keys 

switches the Blue Phantom from TMR mode back to 

normal mode (hand control stops beeping). 

Note: It is not required to do this after a TMR 

measurement. The software switches the Blue Phantom 

back to normal mode automatically. 


CU500E (Control Unit) 

Description of the LEDs on the hand control 

off the external limit cannot be defined at the actual detector position, 

since the detector is in the other half of the phantom (beyond the 

center point). 

on you may define an external limit at the actual detector position. 

The detector didn't yet reach the previously defined external limit. 

flashing you may define an external limit at the actual detector position. 

The detector already exceeded the previously defined external 

limit. 

Manual Controls 

All operator control is performed from the computer keyboard. The CU500E 

contains the following indicators and controls: 

POWER A green lamp on the front side which lights to indicate 

the ON state of the CU500E. 

ON / OFF Mains power switch, located on the rear side. 

Figure 6. Control Unit CU500E - front side. 

Trigger cable input 

Drive control cable input 

Figure 7. Control Unit CU500E - rear side. 

ON / OFF switch 

Mains 

power 

inlet 


WARNING HIGH VOLTAGE 

The CU500E contains high voltages of up to 240 V AC and 480 V DC. 

Do not open covers. 

Connectors 

The CU500E rear side contains the following connectors: 

Mains power Input connector for mains power, 100 - 120 V or 220 - 

240 V according to the marking on the unit. The fuse 

holder is integrated with the mains power connector, see 

the Maintenance chapter for replacement instructions. 

Drive control Connector for communication with the Blue Phantom 

(drive control cable). 

Trigger Can be used as input for synchronisation pulses during 

scanned beam measurements. 

The CU500E front side contains the following connectors: 

Field (TNC) Input connector for the field detector. 

Field (BNC) Input connector for the field detector, if the signal is 

supplied as a voltage (e.g. if an external electrometer is 

used). 

Reference (TNC) Input connector for the reference detector. 

Reference (BNC) Input connector for the reference detector, if the signal 

is supplied as a voltage (e.g. if an external electrometer 

is used). 

Control Computer 

RS232C - A 

Input connector for a serial cable which connects the 

CU500E to a COM port of the PC. To be used for 

standard operation. 

RS232C - B Input connector for a serial cable which connects the 

CU500E to a COM port of the PC. To be used only for 

troubleshooting. 


AquaLift (option) 

AquaLift combines a water reservoir and a pump system with a lifting carriage 

for the Blue Phantom. Water pump and lifting table are controlled by push 

buttons on the control panel. The pump can also be controlled automatically by 

the OmniPro-Accept software during TPR/TMR measurements. 

AquaLift contains a connector for remote control signals from the CU500E 

during TPR/TMR measurements, see the figure below. 

Figure 8. AquaLift water reservoir and lifting carriage. 


Control panel 

The AquaLift control panel contains the following controls and indicators: 

POWER This switch connects mains power to AquaLift when set 

to the 1 position. The switch lights to indicate the 

POWER ON state. 

Function selector A latching switch that selects the LIFT or PUMP 

function. The Function selector must be in the PUMP 

position to enable remote control. 

LIFT A non-latching switch that controls the lifting 

movement. The lifting table moves upwards when the 

switch is held in the UP position. The lifting table 

moves downwards when the switch is held in the 

DOWN position. The movement stops as soon as the 

switch is released. 

PUMP A latching switch that controls the pumping direction. 

Water is pumped into the water phantom when the 

switch is set in the FILL PHANTOM position. Water is 

pumped out of the water phantom when the switch is set 

in the EMPTY PHANTOM position. When the switch is 

in mid-position the pump is OFF. 

Flow control handle This handle controls a valve that determines the flow 

rate during pumping. The Flow control handle allows 

stepless adjustment between the Min flow and Max flow 

positions. Flow control is normally used only to limit 

flow during TPR/TMR measurements. 

REMOTE CONTROL This lamp lights to indicate that the pump is remote 

controlled by the CU500E. This function requires that a 

TMR remote control cable is connected to the REMOTE 

CONTROL connector on AquaLift. 

Support screws 


Note: The Function selector must be in the PUMP 

position to enable remote control. 

AquaLift weights up to 500 kg when filled with water. 

Keep your feet away from the wheels when moving AquaLift. Always 

lock support screws during use. 

AquaLift has four support screws that should be used to prevent unwanted 

movements when loading a Water Phantom on AquaLift, filling with water, and 

during measurement. To lock a support screw, turn the handle clock-wise until 

the support screw presses against the floor. 


Mains power cable 

The mains power cable is permanently connected to the pump box and should 

always be wound around the cable holder when AquaLift is not used. 

Figure 9. AquaLift front view with mains power cable. 

Tubing 

AquaLift includes all the necessary tubing to fill a Water Phantom. A filling tube 

attached to the pump hose connects easily to the edge of the Water Phantom. The 

filling tube can be put into the tube support during measurements (except 

TPR/TMR). Whenever the filling tube is not inserted into the tube support, the 

delivered plug should be fit to the tube support opening to prevent water from 

splashing out of the reservoir. 

Figure 10. Filling tube. 


Electrical Lift Table (option) 

Introduction 

As an alternative to the AquaLift, the Electrical Lift Table is a small and flexible 

device for positioning and fine adjustment of water phantoms under linear 

accelerators or other radiation sources. 

• The electrical control allows comfortable and smooth lifting / lowering with 

a vertical range of 740 - 1240 mm, the table is therefore suitable for 

measurements in both standard SSD and TPR/TMR conditions. 

• The telescope construction is self-locking, a given position rests absolutely 

stable. 

• By using the levelling frame mounted on top of the lift table, the water 

phantom can be fine adjusted in vertical and horizontal direction. In the 

horizontal plane, it can be shifted in both directions and turned. 

• For carriage of the water phantom the lift table is provided with two fixed 

and two steerable rollers with parking brakes. 

Figure 11. Electrical Lift Table. 

Handwheel for 

vertical levelling 

Lateral 

adjustment 

handle 

Parking brakes 


Manual Lift Table (option) 

Figure 12. Hand control for the Electrical Lift Table. 

Introduction 

As an alternative to the AquaLift, the Manual Lift Table is a small and flexible 

device for positioning and fine adjustment of water phantoms under linear 

accelerators or other radiation sources. 

• By using the levelling frame mounted on top of the lift table, the water 

phantom can be fine adjusted in vertical direction. 

• For carriage of the water phantom the lift table is provided with two fixed 

and two steerable rollers with parking brakes. 

• The crank handle uses a mitre-gear with a reduction ratio of 1:2 and allows 

therefore the lifting of water phantoms with little effort. 

• The construction of the drive includes four synchronised acme thread 

spindles connected with a precision driving belt. The spindles are selflocking, 

a given position rests absolutely stable. 

Figure 13. Manual Lift Table. 

Movement in +Z direction. 

Pressing this key and holding it 

causes lift table movement in 

+Z direction (upwards). 

Movement in -Z direction. 

Pressing this key and holding it 

causes lift table movement in - 

Z direction (downwards). 

If the keys are released, the 

vertical movement will stop 

immediately. 

Handle for 

vertical 

levelling 

Handwheel for 

vertical 

movement of 

the lift table 


Water Reservoir with bi-directional pump 

Introduction 

In combination with the electrical or manual lift table, the Water Reservoir is 

used for filling and draining the water phantom, storage of the water while the 

phantom is not in use, and for TPR/TMR measurements. The carriage of the 

water reservoir is provided with two fixed and two steerable rollers with parking 

brakes. 

Figure 14. Water Reservoir. 

Figure 15. The hand control for the Water Reservoir. 

Filling tube 

Support opening 

for filling tube 

Hand control 

Parking brake 

28 • Hardware Description [DWA000 90001 02] Blue Phantom Manual 

FILL 

STOP 

DRAIN

Notes: 

Fill button. Press this key to fill the Blue Phantom. 

Stop button. Press this key to stop the pumping operation. 

Pressing this key and holding it for more than 2 seconds locks 

the pump. 

Drain button. Press this key to drain the Blue Phantom. 

1. The water reservoir is provided with a bi-directional DC water pump and 

an electromagnetic valve to prevent water leakage in case of hose failure 

and to prevent water from flowing back into the reservoir during 

measurements, while the filling tube is connected to the phantom. 

2. If the pump has been in operation for more than 15 minutes without 

interruption, it will automatically be switched off, and the red LED above 

the Fill or Drain button will flash. To release the water reservoir and 

continue the operation, press the Stop button. 

3. If the Fill button is pressed the first time after the water reservoir has been 

connected to the mains outlet, there is an incident waiting time of approx. 

15 seconds. During this time, the electromagnetic valve is opened in order 

to remove the air between the pump and the electromagnetic valve. The red 

LED above the Fill button flashes during this time. This procedure can be 

interrupted by either interrupting the mains connection or by pressing all 

buttons simultaneously (soft reset). 

4. Computer controlled filling or draining can be interrupted at any time by 

pressing one of the buttons on the hand control. 

5. The pump can be locked by pressing the Stop button for more than 2 

seconds. In this condition, neither manual nor computer controlled 

operation is possible. The LED above the Stop button flashes. You can 

release the water reservoir by pressing the Stop button once or by 

interrupting the mains connection. 

6. The electronic control incorporates a verification of the temperature. 

Overtemperature is indicated by a fast flashing LED (5 Hz) above the Stop 

button. In case of overtemperature, the water reservoir is locked until the 

temperature decreased sufficiently. This locking condition cannot be 

released by the user, even not by interrupting the mains connection. 


TMR Probe (option) 

Tissue Phantom Ratio (TPR) and Tissue Maximum Ratio (TMR) are 

conveniently measured with a water level transducer mounted on the Blue 

Phantom. The TPR/TMR measurement is performed as water is pumped into or 

out of the Blue Phantom, while the field detector rests at a stable position. 

The TMR transducer (TMR probe) contains a tubular waveguide, protected by a 

stainless steel pressure tube. A positioning magnet (float) travels along the rod. 

The positioning magnet defines the position to be measured on the waveguide. 

An internally generated pulse in conjunction with the magnetic field produces a 

torsional wave in the waveguide (magnetostriction), which propagates an 

ultrasonic velocity. The wave component reaching the far end of the waveguide 

is absorbed by a damping technique. The component reaching the connection 

end passes through a coil, generating an electric signal. The wave propagation 

time is used to derive the position of the float i.e. the water surface. This takes 

place with extremely high precision and repeatability. 

The TMR probe uses the TMR connector on the Blue Phantom to transmit 

position signals. Detector signals are connected to the Field and Reference 

inputs on the CU500E. 

Furthermore, the TMR probe receives the necessary power from the electronics 

of the water reservoir. The cable to the water reservoir must therefore be 

connected to the PUMP CONTROL connector on the Blue Phantom. 

For TPR/TMR measurements, either the AquaLift or the Water Reservoir with 

bidirectional pump must be used. The water pump is controlled automatically by 

the OmniPro-Accept software via the CU500E. 

Figure 16. The TMR Probe. 

TMR probe 

Float (water level detector) 


Detectors (option) 

Introduction 

Scanditronix-Wellhöfer provides a wide range of single detectors 

(semiconductor detectors and ionisation chambers) and a chamber array for use 

in the Blue Phantom. 

Detectors 

Semiconductors 

(Field detectors for 

electrons, photons) 

Figure 17. The detector relationship. 

Semiconductor detectors 

Scanditronix-Wellhöfer provides four types of semiconductor detectors for field 

analysis: 

• Field detector for electrons (blue), 

• Field detector for photons (yellow), 

• Field detector for stereotactic beams (green), 

• Reference detector. 

The field detectors allow field measurements with high spatial resolution due to 

the small size of the active semiconductor chip. All field detectors are based on 

the Hi-pSi semiconductor chip. An important benefit of the Hi-pSi chip is the 

dose rate independence. The field detectors are delivered with individual test 

certificates. 

Field detector for electrons 

This detector should be used for measurements in electron fields, where it 

produces a signal proportional to the absorbed dose in water, without any need 

for corrections. 

Field detector for photons 

Single detectors Detector array 

(CA24) 

Ionisation chambers 

Cylindrical ionisation 

chambers 

(e.g. CC13, RK, Farmer) 

Plane-parallel ionisation 

chambers 

(e.g. PPC40, NACP) 

This detector is specially designed for measurements in photon fields. The 

detector has a built-in compensation for the energy dependence of Si. 

When irradiated in the axial direction the photon field detector gives a uniform 

resolution. The detector type is recommended for use in photon fields larger than 

10 x 10 cm. 


Field detector, stereotactic beam 

This detector is specially designed for measurements in photon fields with field 

sizes from 10 x 10 cm down to 2 mm diameter. The spatial resolution of this 

detector is only 0.6 mm, it is therefore the choice in small fields or sharp gradient 

regions. The detector can also be used in electron fields if the integration time is 

increased. 

Reference detector 

This detector is specially designed to achieve a stable reference signal in both 

photon and electron beams. By detecting fluctuations in the beam, the inaccuracy 

of the relative measurement due to varying accelerator output is reduced. 

Ionisation chambers 

Ionisation chambers are recommended for absolute dosimetry and used in 

relative dosimetry for the measurement of profiles and depthdoses in photon and 

electron beams. For continuous scanning they are used in pairs (one field 

chamber, one reference chamber). More specific informations about the 

chambers are provided in dedicated user's guides. 

The chambers are connected via chamber extension cables to the CU500E. The 

CU500E provides a high voltage supply, which is controlled from the OmniPro- 

Accept software. 

Scanditronix-Wellhöfer supplies the following types of ionisation chambers: 

CC Chambers (Compact chambers) 

Type inner diameter active volume 

CC01 2.0 mm 0.01 cm 3 

CC04 4.0 mm 0.04 cm 3 

CC08 6.0 mm 0.08 cm 3 

CC13 6.0 mm 0.13 cm 3 

CC25 6.0 mm 0.25 cm 3 

These compact cylindrical (thimble) ionisation chambers are intended for the 

following applications: 

• CC01: Measurements of small fields and of ranges with high dose gradients 

(e.g. stereotactic fields). 

• CC08: Customised applications during manufacturing, installation and field 

service of linear accelerators. 

• CC04, CC13: Standard chambers for clinical use in water phantoms, solid 

phantoms and in air (with build-up cap). 

• CC25: Low dose measurements in water phantoms and in-air measurements 

for quality assurance. 

The chambers are waterproof without any additional accessory. Each CC 

chamber is calibrated and delivered with an individual calibration certificate. 


PPC Chambers (Plane parallel chambers) 

Type diameter (inner electrode) active volume 

PPC05 9.9 mm 0.046 cm 3 

PPC40 16.0 mm 0.40 cm 3 

These plane parallel ionisation chambers are intended for the following 

applications: 

• PPC05: The conventional ionisation chamber for electron dosimetry, used in 

water phantoms, solid phantoms and in air (with build-up cap). 

• PPC40: Fast measurements and easy data evaluation for dose determination 

in electron and proton beams. 

The chambers are waterproof without any additional accessory. Each PPC 


FC Chambers (Farmer type chambers) 

Type inner diameter active volume wall material 

FC23-C 6.2 mm 0.23 cm 3 

FC65-G 6.2 mm 0.65 cm 3 

FC65-P 6.2 mm 0.65 cm 3 

Shonka C552 

Graphite 

POM (Delrin) 

These Farmer type cylindrical ionisation chambers are intended for absolute 

dosimetry in water phantoms, solid phantoms and in air (with build-up cap). Due 

to the robust wall material, the FC65-P is especially useful for all routine 

applications. 

The chambers are waterproof without any additional accessory. Each FC 


NACP Chamber 

This is a sealed plane-parallel ionisation chamber built to the specifications of 

the Nordic Association of Clinical Physics (NACP). It is especially suited for 

measurements in low-energy electron beams. 

The NACP chamber features a thin front window, which allows shallow 

measurements, a small cavity minimising field perturbation, low polarity effect 

and high stability of detector response. It is water-proof without any additional 

accessory. Each NACP chamber is delivered with an individual test certificate. 

RK Chamber 

This unsealed cylindrical (thimble) ionisation chamber is intended for water 

phantom or in-air measurements using a Perspex build-up cap. It is suitable for 

electron or photon beams of energies above 1 MeV. 

The RK chamber has a small air cavity to enable measurements in steep gradient 

regions, for example the penumbra region. It is used for relative dose 

measurements in water. Each RK chamber is delivered with an individual test 

certificate. 


MD240 24-channel electrometer (option) 

Introduction 

The MD240 is specifically designed to receive the signals of the 23 ionisation 

chambers on the CA24 chamber array, plus the signal of an optional single 

reference detector which usually is a CC13 chamber. The MD240 cannot be used 

with other field detectors than the CA24. 

The front panel of the MD240 contains a green LC display, which lights to 

indicate the ON state of the MD240. 

The ON / OFF switch is located on the rear panel of the MD240. 

Figure 18. The MD240 24-channel electrometer - front side. 

Connector for 

calibration factor 

plug 

Connector for 

CA24 signal 

cable 

Connector for 

reference 

chamber cable 

Figure 19. The MD240 24-channel electrometer - rear side. 

Connector 

for CAN bus 

cable 

ON / OFF 

switch 

Mains 

power 

inlet 


Connectors 

The MD240 rear side contains the following connectors: 

Power Supply Input connector for mains power. The MD240 has a 

wide range power supply accepting 85 - 265 V. The fuse 

holder is integrated with the mains power connector, see 

the Maintenance chapter for replacement instructions. 

CAN Bus Connector for the communication with the PC. Any of 

the two upper connectors can be used. A so-called CAN 

Bus cable connects the MD240 and a CAN Bus 

interface board in the PC. 

SINGLE DETECTOR Input for reference detector cable. 

ARRAY DETECTOR Input for the CA24 signal cable. 

Detector ID Input for the small plug containing the calibration 

factors, fixed at the CA24 signal cable. Use the upper 

input connector only. 

other connectors All other input connectors are currently not used. 

The MD240 front side contains the following connectors: 

Com A Input for a serial cable connection between the MD240 

and the PC. Used only for firmware download and 

troubleshooting. 

Keys on the MD240 front side 

You can use the keys at the MD240's LC display to: 

• set the bias voltage, 

• define the baud rate for COM A (serial cable for firmware download), 

• switch the speaker on or off, 

• check the actual firmware version, 

• adjust the contrast of the LC display. 

After switching on the MD240, the startup message as shown below is displayed: 

Wellhöfer Dosimetrie 

MD240 Electrometer 

Figure 20. LC display and keys of the MD240. 

Enter 


The leftmost key is a hidden key used to reset the MD240. The function of the 

other keys below the display depends on the actual condition, and is indicated in 

the LC display directly above each key. The Enter key at the right side of the 

display is used to confirm settings. 

CAN Bus board 

The communication between the MD240 and the PC is realised by the CAN Bus 

interface board which is inserted into the PC. 

Figure 21. The PCI CAN Bus interface board. 

Basically the CAN Bus board is a standard PCI bus plug&play interface board. 

Alternatively, the CAN Bus interface can also be realised via an USB adapter or 

a PCMCIA interface card (the latter for laptops / notebooks only). 

Figure 22. The USB CAN Bus adapter. 

The MD240 is connected to the CAN Bus interface board resp. USB adapter via 

a customised CAN Bus cable of 20 m length. 


CA24 Chamber Array (option) 

The CA24 chamber array consists of 23 vented ionisation chambers arranged in 

a linear order with 2 cm spacing. The CA24 is designed for profile and depth 

dose measurements in water, and provides fast and reliable measurements in 

dynamic fields. It is mounted on the horizontal X-rail of the Blue Phantom. 

The CA24 can only be used in combination with the MD240 electrometer. In 

addition, a reference chamber (usually a CC13) can be connected to the MD240 

in order to compensate for long term variations in the accelerator output. 

Furthermore, the CU500E is needed to control movement of the mechanics in the 

Blue Phantom. 

Figure 23. The CA24 chamber array. 

Blue Phantom Cable Support 

A special cable support has been designed to lead the CA24 signal cable out of 

the Blue Phantom in a way that it cannot get stuck or bended. This cable support 

must be mounted on the Blue Phantom when the CA24 option has been 

purchased. It is usually left mounted even when the CA24 is not in use. 

Figure 24. CA24 signal cable support. 


Other options 

Treatment head scanning servos 

The HSC 1D and the HSC 2D scanning servos are designed for measurements in 

air during routine radiation field checks. 

The servo is attached to the treatment head by inserting it into the accessory 

holder of the treatment head. The servo is held in a fixed position relative to the 

treatment head, thereby allowing measurements in any gantry angle. 

CC13 ionisation chambers (one field chamber, one reference chamber) are used 

as detectors. Acrylic build-up blocks of different thicknesses and an acrylic 

wedge are available in addition. 

The one-dimensional headscanner HSC 1D 

Potentiometer 

Figure 25. HSC 1D head scanning servo. 

Connectors on the HSC 1D 

The following connectors are located on the HSC 1D: 

Motor Input connector for the drive motor. 

Poti Input connector for the potentiometer. 

Figure 26. HSC 1D connector panel. 

Connector panel 

X rail 

sliding 

shoe 

38 • Hardware Description [DWA000 90001 02] Blue Phantom Manual 

Motor 

Input connector for the 

drive control cable to 

the CU500E 

Input connector for 

the Hand Control

The two-dimensional headscanner HSC 2D 

Figure 27. HSC 2D head scanning servo. 

The following connectors are located on the HSC 2D: 

MX Input connector for the X drive motor. 

MY Input connector for the Y drive motor. 

PX Input connector for the X drive potentiometer. 

PY Input connector for the Y drive potentiometer. 

Figure 28. HSC 2D connector panel. 

Input connector for 

the Hand Control 

X rail sliding 

shoe with 

detector 

holder 

Connector 

panel 

Input connector for the 

drive control cable to 

the CU500E 

The GUN and TARGET stickers indicate the orientation of the servo against the 

gantry coordinate system. 



Installation 

Introduction 

This chapter describes the unpacking and installation of the hardware of the Blue 

Phantom, including check procedures and guidelines for correct placing of the 

equipment. Computer requirements and software installation instructions can be 

found in the OmniPro-Accept System Manual. 

IMPORTANT NOTICE 

Unpacking and Installation 

Personnel who are to install the Blue Phantom must read this 

chapter and be fully aware of its contents. 

General unpacking instructions 

Before unpacking, check for damage on the outside of the crate. Note any sign of 

damage. Open the crate and carefully unpack all parts of the system. Check each 

item against the packing list which is attached to the installation report. If any 

parts are missing, confirm this on the installation report. If any parts are 

damaged, report the damage immediately to the shipping agent and contact your 

Scanditronix-Wellhöfer distributor. 

The undersigned installation report should be mailed or faxed to the factory. The 

completion date of installation represents the beginning of the warranty period. 

The original packaging (shipping crate, packing materials, transport protections 

etc.) must be kept for possible shipment. 

Blue Phantom Manual [DWA000 90001 02] Installation • 41

AquaLift 

Tools and accessories 

You need the following tools and accessories to unpack and install the AquaLift: 

• Pallet loader, 

• Phillips screwdriver, 

• Scissors. 

Unpacking AquaLift 

The AquaLift crate consists of a wooden bottom plate with a plywood hood. 

Unpacking requires two persons. 

Unpack AquaLift as follows: 

1. Remove the screws at the bottom of the hood. 

2. Lift off the cover (use the leather straps). 

3. Cut the straps holding AquaLift. 

4. Lift the AquaLift by lowering the front support screws until the wooden bars 

below AquaLift are free. 

5. Place two 25 mm pieces of wood under the rear support screws (below the 

handle). 

6. Lift the rear end of AquaLift by lowering the rear support screws. 

7. Remove the three wooden bars. 

8. Loosen all support screws until AquaLift rests on the bottom plate with its 

wheels. 

9. With a wooden bar between the pallet loader and AquaLift, lift the rear end 

of AquaLift (see illustration to the left). 

10. Pull AquaLift halfway out from the bottom plate; the front wheels should 

still rest on the bottom plate. 

11. Carefully lift the AquaLift from the pallet loader and place it with the rear 

wheels on the floor. 

12. Lift the front end of AquaLift by hand and carefully place it on the floor. 

42 • Installation [DWA000 90001 02] Blue Phantom Manual

Check Lifting function 


The lifting table moves close to the equipment shelf. Keep hands 

away from the equipment tray when operating the lifting table. 

Note: The lifting unit should not be operated continuously for more than 2 

minutes. An automatic thermal fuse will cut off power to the lifting unit 

if it is overheated. When the lifting unit has cooled off, the thermal fuse 

will reset automatically. 

Begin by connecting mains power to AquaLift: 

1. Check that the Function selector is set to LIFT. 

2. Check that the PUMP switch is set to mid-position (OFF). 

3. Connect the mains power cable to a mains power outlet with protective 

earth. 

4. Press the POWER switch and verify that it lights. 

Verify the lifting function as follows: 

1. Push the LIFT switch to the DOWN position. 

2. Verify that the lifting table moves down to its lowest position, then release 

the LIFT switch. 

3. Push the LIFT switch to the UP position. 

4. Verify that the lifting table moves up to its highest position, then release the 

LIFT switch. Check that the switch returns to mid-position. 


Check Pumping function 

Caution Use distilled or de-ionised water 

Caution Flooding hazard 


When filling the water reservoir, always use distilled or de-ionised water 

to prevent the growth of algae. 

If water is filled directly into the reservoir, do not fill in significantly more 

water than the Blue Phantom can hold (190 L). 

AquaLift weights up to 500 kg when filled with water. Keep your feet 

away from the wheels when moving AquaLift. Always lock AquaLift 

with the support screws during use. 

WARNING HIGH CENTRE OF GRAVITY 

Caution Dry pump 

With filled Blue Phantom raised to the highest position, the centre of 

gravity will be high. AquaLift may tip over if it is moved and collides 

with other objects. 

Do not move AquaLift with filled Blue Phantom in the highest 

position. 

Verify the pumping function as follows: 

1. Remove the fill tube from the tube support and place it in a container with 

distilled or de-ionised water, or in a filled water phantom. 

2. Move the Function selector to the PUMP position. 

3. Press the PUMP switch to the EMPTY PHANTOM position. 

4. When the pump has started the water should normally reach the water 

reservoir within about 1 minute. Verify this and then set the PUMP switch to 

mid-position (OFF). 

Do not run the pump dry for more than 10 minutes. 

5. Press the PUMP switch to the FILL PHANTOM position. 

6. Verify that water is pumped out of the water reservoir, then set the PUMP 

switch to OFF. 

Note: It is convenient to leave the fill tube in the water phantom during 

storage. Remember to put the rubber plug in the tube support. 



Unpacking Electrical Lift Table 

The Electrical Lift Table is delivered completely assembled. Carefully unpack it 

from the transportation case. Retain the original packing material in case 

reshipment becomes necessary. Observe the general unpacking instructions 

stated at the beginning of this chapter. 

After unpacking the lift table, check the following: 

• Check that the mains connection is in accordance to information indicated 

on the lift table's rating label. 

• Verify that the lift table is working correctly by driving it once over the full 

vertical range. 

• Check the floor condition at those locations where you want to drive or 

place the lift table. Check that the maximum load capacity of the floor is 

sufficient (see Specifications). 

Notes: 


1. To disconnect the lift table from the mains electric supply, it is necessary to 

unplug the power cord from the mains outlet. 

2. The telescope drive is not equipped with mechanical end switches. If the 

highest or lowest position is reached, the drive is stopped by the electrical 

control unit using an overcurrent circuit breaker. 

3. In the same way, the motor is also stopped in case of overheating. Wait 

until the temperature has decreased significantly before continuing to 

operate the lift table. 





Figure 29. Electrical Lift Table: possible pinch hazard. 


Manual Lift Table 

Unpacking Manual Lift Table 

With the exception of the crank handle, the Manual Lift Table is delivered 

completely assembled. Carefully unpack it from the transportation case. Retain 

the original packing material in case reshipment becomes necessary. Observe the 

general unpacking instructions stated at the beginning of this chapter. 

After unpacking the lift table, do the following: 

• Mount the crank handle on the outgoing shaft of the mitre-gear. The 

hexagonal nut type M8 delivered with the table is used to fix the crank 

handle. 

• Verify that the lift table is working correctly by moving it once over the full 

vertical range. 


place the lift table. Check that the maximum load capacity of the floor is 

sufficient (see Specifications). 

Safety Precautions (Electrical and Manual Lift 

Table) 

• The lift table must not be charged with anything else than the Blue Phantom 

or RFA-300 water phantoms. Especially, do not carry persons with the lift 

table. 

• The maximum load capacity of the lift table must not be exceeded. 

• The maximum permissible load capacity of the floor must be sufficient. 

• Never charge the lift table unbalanced or significantly beyond the platform. 

• Lift the platform only if the table is in a horizontal position. 

• The lift table should be placed in a stable position and in such a manner, that 

collisions of the platform with other items in the near environment are 

avoided, and that it is possible during normal use to safely perform all tasks 

concerning the lift table or the water phantom. 

• During the carriage of water phantoms the lift table must be kept on its 

lowest position. Furthermore, it is strongly recommended to empty the 

phantom before carrying it with the lift table. Otherwise the lift table may tip 

over if it is moved and collides with other objects. 


Water Reservoir 

Unpacking Water Reservoir 

The Water Reservoir is delivered completely assembled. Carefully unpack it 

from the transportation case. Retain the original packing material in case 

reshipment becomes necessary. Observe the general unpacking instructions 

stated at the beginning of this chapter. 

After unpacking the water reservoir, check the following: 

• Check that the mains connection is in accordance to information indicated 

on the water reservoir's rating label. 


place the water reservoir. Check that the maximum load capacity of the floor 

is sufficient (see Specifications). 

Safety Precautions 



• The water reservoir must not be charged with heavy items. 

• Do not carry persons with the water reservoir. 

• Do not park the water reservoir on an inclined position of the floor. 

• The maximum permissible load capacity of the floor must be sufficient. 

• Never fill the water reservoir to a level where the ventilation hole is filled 

with water. 

The water reservoir weights up to 300 kg when filled with water. 

Keep your feet away from the wheels when moving the water 

reservoir. Always lock the water reservoir with the parking brakes 

during use. 



Putting into operation for the first time 

The water pump used in this water reservoir is not a suction pump. To achieve a 

proper function when filling the water phantom, the filling tube should initially 

be placed below the water level in the reservoir. For the initial use please 

proceed as follows: 

1. Remove the upper wooden plate from the water reservoir carriage. 

2. Open the round lid of the water tank. 

3. Fill the reservoir to approximately 4 cm below the lid. 

Caution Use destilled or de-ionised water 

Caution Flooding hazard 



If water is filled directly into the reservoir, do not fill in significantly more 

water than the Blue Phantom can hold (190 L). 

4. Place the hose (without the metal filling tube connected) into a bucket on the 

floor. 

5. Press the Fill button and wait until water is pumped into the bucket. 

Note: If the Fill button is pressed the first time after the water reservoir has 

been connected to the mains outlet, there is an incident waiting time of 

approx. 15 seconds. During this time, the electromagnetic valve is opened 

in order to remove the air between the pump and the electromagnetic 

valve. 

6. Press the Stop button. 

7. Attach the metal filling tube to the hose. 



Unpacking the Blue Phantom 

The Blue Phantom is delivered in two boxes: 

• One outer plywood box with the Blue Phantom (tank and mechanics). 

• One inner plywood box, placed inside the Blue Phantom with the CU500E 

and accessories. 

Unpacking requires two persons. 

Figure 30. The Blue Phantom delivery boxes. 

Unpack the Blue phantom as follows: 

1. Unlock and remove the top cover of the outer plywood box. 

2. Remove the upper packing material. 

3. Lift the inner box with the CU500E and accessories out of the Blue 

Phantom. 

4. Lift the CU500E out of the inner box. 

5. Take out the package with cables, manuals and accessories from the inner 

box. 

6. Compare with the packing list and check that all items are delivered. 

7. Lift the Blue Phantom out of the outer box and place it on the AquaLift or 

Lift Table. 

Caution Do not lift the phantom at the rails 

Upper 

packing 

material 

Inner box 

Outer box 

Never lift the Blue Phantom at the rails. Take hold of the phantom at the 

Perspex bars on the side walls of the tank. 


Blue Phantom Installation 

WARNING LINE VOLTAGE SETTING 

Before connecting a unit to mains power, check that the line voltage 

settings of the unit is in accordance with the local mains voltage. 

WARNING PROTECTIVE EARTH CONNECTION 

All equipment must be connected to mains power outlets with 

protective earth. 

Device connection overview 

Here is a diagram showing the general connection between the different devices. 

Figure 31. Device connection overview. 

The CU500E is placed in the control room near the PC. It is connected to the PC 

with the 1.5 m serial connection cable. On the other hand, it is connected to the 

Blue Phantom with the 18 m drive control cable and the two 18 m chamber 

extension cables. These cables must be put through the cable tunnel between the 

control room and the treatment room before connecting them. 

If the CA24 was purchased, the CAN Bus cable between the PC and the MD240 

electrometer must be put through the cable tunnel as well. The MD240 is placed 

in the treatment room, but as far away from the radiation field as the length of 

the CA24 signal cable allows. 


support tube 

float 

Blue Phantom and TMR probe 

If the TPR/TMR option has been purchased with the Blue Phantom initially, the 

TMR probe is normally already mounted in the Blue Phantom. However, if this 

is not the case or the TPR/TMR option is purchased later, proceed as follows. 

1. Ensure that the TMR probe together with the float is inserted into the acrylic 

support tube. The label on the float must be oriented upwards. 

2. Mount the support tube with the TMR probe in the Blue Phantom. 

3. Tighten the two fixation screws at the top of the TMR probe (see figure 

below). 

4. Connect the cable from the TMR probe to the TMR input on the connector 

box of the Blue Phantom. 

The TMR probe usually remains in the Blue Phantom. For TPR/TMR 

measurements, the remote control cable coming from the AquaLift resp. Water 

Reservoir must be connected to the PUMP CONTROL input on the connector box 

of the Blue Phantom (see Setting up for measurement). 

Figure 32. Mounting the TMR probe. 


Blue Phantom, CU500E and PC 

Caution Observe order of installation 

Observe the order stated below to avoid damage to the equipment. 

Caution Do not push the servo by hand 

Never try to push or pull the Blue Phantom servo mechanics by hand. 

Leave the transport protection under the horizontal X-rail in place. It can 

be removed later when the system is powered. 

Caution Do not place the CU500E in the treatment room 

Radiation may damage the electronics of the CU500E. Place the 

CU500E in the control room near the PC. 

Caution Do not cover the ventilation slits of the CU500E 

Caution Unexpected movement 

To prevent overheating and subsequent damage to the CU500E, leave 

enough room around the CU500E and do not cover the slits. 

Make sure that the CU500E is switched off before connecting the drive 

control cable between the CU500E and the Blue Phantom. 

Caution Install CAN Bus board and driver before installing OmniPro- 

Accept 

If you have purchased the CA24, the CAN Bus board (hardware) and the 

CAN Bus board driver must be installed before installing the OmniPro- 


Please follow this installation procedure: 

1. Install the OmniPro-Accept software on the PC. 

2. Connect one end of the serial communication cable to port A (labeled 

Control Computer) on the front panel of the CU500E. 

3. Connect the other end of this cable to a serial port of the PC. 

4. Plug the mains power cables into the mains power inlets of the CU500E, the 

PC and the monitor. 

5. Connect the mains power cables to grounded mains power outlets. 

6. Attach the Drive Control Cable to the DRIVE CONTROL connector on the 

Blue Phantom. Lock the connectors by tightening the two screws. 

7. Plug the Drive Control Cable into the DRIVE CONTROL input on the rear of 

the CU500E. Take care not to force it into position. 

8. Attach the hand control to the REMOTE CONTROL connector on the Blue 


9. Switch on power to the PC and the monitor. Wait until Windows has 

finished booting. 

10. Switch on power to the CU500E. Wait until the CU500E has finished 

booting (confirmation beep at the hand control). 


11. Use the Z movement key on the yellow area of the hand control in 

combination with the F key to move the servo upwards. Now remove the 

transportation protection. 


MD240 and CAN Bus interface 

Caution Do not place the MD240 in the radiation field 

Caution Do not cover the MD240 

Radiation may damage the electronics of the MD240. Keep the MD240 

and control cables out of the primary radiation field. The MD240 should 

be placed as far away from the radiation field as cable length allows. 

To prevent the MD240 from internal overheating, do not block the 

ventilation holes and the circulation of air around the MD240. 

Caution Install CAN Bus board and driver before installing OmniPro- 

Accept 

If you have purchased the CA24, the CAN Bus board (hardware) and the 

CAN Bus board driver must be installed before installing the OmniPro- 


Installation of the PCI CAN Bus board and driver 

1. Switch off the PC. Make sure that all peripheral devices (monitor etc) are 

powered down. 

2. Install the PCI CAN Bus board into an available PCI slot. 

3. Do not forget to fasten the slot cover with the screw you removed before. 

4. Turn on the peripheral devices and the PC. 

5. When rebooting Windows, the system may display a "New Hardware 

Found" message and ask for a driver. Cancel this installation assistant 

without installing a driver at this moment. 

6. Execute OmniPro-Accept Setup and select the CANcard option. Specify the 

type of CAN Bus board and choose the Install CANcard button. 

7. Follow the instructions on the screen. The installation path for the CAN Bus 

board driver can be selected to your choice. 

8. Reboot the PC before continuing with the OmniPro-Accept installation. 

Connecting the MD240 

After installation of the CAN Bus board, connect the 9-pin D-sub plug of the 

CAN Bus cable to the CAN Bus board, and the round plug of the CAN Bus cable 

to one of the CAN Bus input connectors on the rear side of the MD240. 

Then power the MD240 and wait until you hear the confirmation beep indicating 

the success of the boot procedure. 


Installation Verification (Blue Phantom, CU500E) 

After hardware installation, the overall system function should be verified. 

Before doing this, please study the OmniPro-Accept System Manual. You need 

to know how to start the software and perform a simple scan. The following 

functions should be verified: 

• Servo movement, 

• Electrometer control, 

• High voltage. 

Servo movement 

Verify the servo movement functions as follows: 

1. Ensure that the CU500E is switched on and that it is connected to the PC. 

2. Start the OmniPro-Accept program. 

3. Define the following: 

• available equipment and at least one accelerator under Equipment, 

• one 3D servo under Servos, 

• one detector under Detectors, 

• the CU500E and the COM port in use under Controllers. 

4. Select Water Measurement and Edit. 

5. Select radiation device, servo, detector type and doserate measurement and 

leave with OK. 

6. With the yellow movement keys on the hand control, drive the servo 

mechanics to the following point: middle of the phantom (position 0 on the 

rulers) in the horizontal dimensions X and Y, and upwards (e.g. position 160 

mm) in Z. 

7. At this position, define Isocenter and Water Surface with the hand control at 

the phantom. Refer to the chapter Hardware description if you need more 

detailed information how to use the hand control. 

Note: If a TMR probe is mounted in the Blue Phantom, it can take approx. 5 

seconds until the confirmation beep appears when defining the water 

surface. This is because the system also reads out the position of the 

float. 

8. Define a single profile scan in the measurement queue. 


9. Enter the Control Panel: 

Figure 33. The CU500E Control Panel. 

10. Choose Servo as the coordinate system. Check that the displayed position is 

displayed as 0, 0, 160 mm (X, Y, Z). 

11. Using the Go To function, enter a position, e.g. 100, 100, 100 mm and press 

Go: 

Figure 34. The Detector positioning window. 

12. Verify the travelled distances in all three directions by looking at the steel 

rulers, and check that the displayed position corresponds with the actual 

position in the phantom. 


Electrometer Control 

1. Ensure that the High Voltage (HV) in the CU500E Control Panel is set to 

zero. 

2. Connect detectors (if available: CC13 ionisation chambers) to the Field and 

Reference inputs on the CU500E. 

3. Move the field detector to the central beam, at approx. Isocenter depth. 

4. In the CU500E Control Panel, under Channel, select Ratio. 

5. Set a High Voltage of +300 V. 

6. Turn on the accelerator. 

7. Select Auto gain under Gain / Range. Wait until the gain setting procedure 

has finished. 

8. Turn off the accelerator. 

9. Check that the displayed offset signal (background) is low: not more than 

20.0 to 30.0 ADC units. 

High Voltage 

WARNING HAZARDOUS VOLTAGE 

The CU500E provides voltages of up to 480 V DC with low currents. 

Always set the high voltage to zero before connecting / 

disconnecting detectors. 

Never touch the servo (at earth potential) and the TNC input 

connectors on the CU500E at the same time. 

1. In the CU500E Control Panel, set the High Voltage to zero. 

2. Disconnect the detectors. 

3. Connect the common input of a high impedance voltmeter to the TNC field 

resp. TNC reference input of the CU500E. 

4. In the CU500E Control Panel, set the High Voltage to some values between 

-300 V and +300 V. 

5. Check the measured voltages. With 100 MΩ impedance, the measured 

voltages should differ only by a few percent from the programmed voltages. 


Installation Verification (CAN Bus board, MD240) 

After the installation of hardware, CAN Bus board driver and OmniPro-Accept 

software it should be verified that the CAN Bus board and the MD240 are 

recognised. To do this, follow the procedure described below. 

1. Ensure that CU500E and MD240 are switched on. 

2. Start the OmniPro-Accept program. 

3. Define the following: 

• available equipment and at least one accelerator under Equipment, 

• one 3D servo under Servos, 

• the CU500E and the MD240 under Controllers, 

• the CA24 under Detectors. 

4. Select Water Measurement and Edit. 

5. Select radiation device, servo, CA24 as detector and doserate 

measurement, and leave with OK. 

6. Define a single scan in the measurement queue. 

7. Enter the control panel: 

Figure 35.The MD240 Control Panel. 

8. Make a background subtraction. If the background subtraction is 

successful (indication Defined under Background) the CAN Bus board and 

the MD240 are recognised correctly. 


Setting up for measurement 

Introduction 

WARNING PROTECTIVE GROUND 

This chapter describes the setup of the Blue Phantom for measurements in the 

beam. It is assumed that the equipment has been installed and verified according 

to the section Installation. Instructions for performing measurements are 

provided by the OmniPro-Accept System Manual. 

All equipment must be connected to mains power outlets with 

protective earth. 

Caution No earth connection to treatment system 

Avoid metallic contact between any part of the Blue Phantom, its cables 

or detectors, and the treatment machine or the treatment couch. 

Figure 36. Blue Phantom Setup. 

Blue Phantom Manual [DWA000 90001 02] Setting up for measurement • 59

Blue Phantom and AquaLift 

WARNING HAZARD DURING TRANSPORT 



Caution Accidental water leakage 

With filled water reservoir, AquaLift may be difficult to stop on 

inclined floors. Always empty the water reservoir before moving 

AquaLift over inclined surfaces. 

The Blue Phantom weights about 45 kg without water. Do not lift the 

Blue Phantom alone. 

AquaLift weights up to 500 kg when filled with water. Keep your feet 

away from the wheels when moving AquaLift. Always lock AquaLift 

with the support screws during use and storage. 

When using the Blue Phantom, always ensure that an accidental water 

leakage will not cause any damage to the building or to other equipment. 




Place Blue Phantom on AquaLift 

1. Place the Blue Phantom on the lift table of the AquaLift. Choose the 

orientation under the treatment machine according to the application. 

2. Lift the filling tube out of the tube support of AquaLift and fasten it on the 

edge of the Blue Phantom. 

Figure 37. Attaching the filling tube to the Blue Phantom. 

60 • Setting up for measurement [DWA000 90001 02] Blue Phantom Manual


3. Move AquaLift to position the Blue Phantom to the desired location below 

the treatment head. 

4. Move AquaLift to adjust the lines marked on the bottom of the Blue 

Phantom roughly to the crosslines of the light field. 

Figure 38. Adjusting the phantom to the central beam. 

5. Lower and fasten the support screws on AquaLift. 

6. Use the lateral adjustment handles to fine-adjust the position. Ensure that the 

light field crosshairs and the crosshairs on the bottom of the Blue Phantom 

are superimposed. Align the vertical indicators on the Blue Phantom with 

the positioning lasers. 

7. Roughly level the empty phantom with a spirit level, using the levelling 

handles on AquaLift. 

Fill Blue Phantom 


1. Fill the Blue Phantom with water as follows. Do not fill more water than up 

to a maximum of 2 cm from its top edge. 

a. Set the Function selector on AquaLift to PUMP. 

b. Press the PUMP switch to FILL PHANTOM. 

c. Return the PUMP switch to mid-position when the Blue Phantom is 

filled. 

2. Remove the filling tube from the Blue Phantom and place it in the tube 

support (For TPR/TMR measurements, do not remove the filling tube). 


Adjust SSD 


IMPORTANT NOTICE Fine-levelling procedure 

The lifting table moves close to the equipment shelf. Keep hands 

away from the equipment tray when operating the lifting table. 

Set the Function selector on AquaLift to LIFT. Press the LIFT switch to UP or 

DOWN as required. 

Position the water surface to the desired SSD (use a piece of paper on the water 

surface and switch on the treatment machine's light distance indicator). 

The fine levelling procedure is described in the section Fine- 

Levelling the Blue Phantom. 



gravity will be high. AquaLift may tip over if it is moved and collides 

with other objects. 

Do not move AquaLift with filled Blue Phantom in the highest 

position. 

Empty Blue Phantom 

When measurements are finished, empty the Blue Phantom as follows: 

1. Place the filling tube in the Blue Phantom. 

2. Set the Function selector on AquaLift to PUMP. 

3. Press the PUMP switch to EMPTY PHANTOM. 

4. When the Blue Phantom is empty, return the PUMP switch to mid-position. 

5. Set the Function selector on AquaLift to LIFT. 

6. Press the LIFT switch to DOWN. 

7. When the lift table has reached its lowest position, release the LIFT switch. 

8. Switch off power on AquaLift. 

9. Fit the plug to the tube support opening if you leave the filling tube in the 

Blue Phantom. 

10. Before moving AquaLift, loosen the support screws by turning them 

counter-clockwise. 

Caution Do not store water in phantom 

Always finish measurement sessions by emptying the Blue Phantom. The 

Perspex walls may distend through long-term exposure to water. 

Caution Do not leave ionisation chambers in water 

Never leave an ionisation chamber in water longer than necessary. 

Increasing humidity inside the chamber can lead to faulty measurements. 


Blue Phantom and Lift Table / Water Reservoir 

WARNING HAZARD DURING TRANSPORT 



Caution Accidental water leakage 

With filled water tank, the Water Reservoir may be difficult to stop 

on inclined floors. Always empty the Water Reservoir before moving 

it over inclined surfaces. 

The Blue Phantom weights about 45 kg without water. Do not lift the 

Blue Phantom alone. 

The Water Reservoir weights up to 300 kg when filled with water. 

Keep your feet away from the wheels when moving the Water 

Reservoir. Always lock the Water Reservoir with the parking brakes 

during use and storage. 

When using the Blue Phantom, always ensure that an accidental water 

leakage will not cause any damage to the building or to other equipment. 




Place Blue Phantom on Lift Table 

1. Place the Blue Phantom on the Lift Table. Choose the orientation under the 

treatment machine according to the application. 

2. Position the Water Reservoir Carriage close to the Blue Phantom. Lift the 

filling tube out of the tube support of the Water Reservoir and fasten it on 

the edge of the Blue Phantom. 

Figure 39. Attaching the filling tube to the Blue Phantom. 



3. Move the Lift Table to position the Blue Phantom to the desired location in 

front of or below the treatment head. 

4. Move the Lift Table to adjust the lines marked on the bottom of the Blue 

Phantom roughly to the crosslines of the light field. 

Figure 40. Adjusting the phantom to the central beam. 

5. Lock the Lift Table by fastening the parking brakes. 

6. Use the lateral adjustment handles to fine-adjust the position. Ensure that the 

light field crosshairs and the crosshairs on the bottom of the Blue Phantom 

are superimposed. Align the vertical indicators on the Blue Phantom with 

the positioning lasers. 

7. Roughly level the empty phantom with a spirit level, using the levelling 

frame of the Lift Table. 

Fill Blue Phantom 


1. Press the Fill button on the hand control of the Water Reservoir. Do not fill 

more water than up to max. 2 cm from the Blue Phantom's top edge. 

Note: If the Fill button is pressed the first time after the water reservoir has 

been connected to the mains outlet, there is an incident waiting time of 

appr. 15 seconds. During this time, the electromagnetic valve is opened in 

order to remove the air between the pump and the electromagnetic valve. 

2. If the desired water height is reached, press the Stop button. 


support (For TPR/TMR measurements, do not remove the filling tube). 


Adjust SSD 






Move the Lift Table up or down as required. 

IMPORTANT NOTICE Fine-levelling procedure 

Position the water surface to the desired SSD (use a piece of paper on the water 

surface and switch on the treatment machine's light distance indicator). 

The fine levelling procedure is described in the section Fine- 

Levelling the Blue Phantom. 



gravity will be high. The Lift Table may tip over if it is moved and 

collides with other objects. 

Do not move the Lift Table with filled Blue Phantom in the highest 

position. 

Empty Blue Phantom 

When measurements are finished, empty the Blue Phantom as follows: 

1. Place the filling tube in the Blue Phantom. 

2. Press the Drain button on the hand control of the Water Reservoir. 

3. When the Blue Phantom is empty, press the Stop button. 

4. Lower the Lifting Table to its lowest position. 


support opening of the Water Reservoir. 

6. Before moving Lift Table and the Water Reservoir, release the parking 

brakes. 




Caution Do not leave ionisation chambers in water 

Never leave an ionisation chamber in water longer than necessary. 

Increasing humidity inside the chamber can lead to faulty measurements. 


Control Cables 

Caution Unexpected movement 

Caution Set high voltage to zero 

Serial cable 

to PC 

Make sure that the CU500E is switched off before connecting the drive 

control cable between the CU500E and the Blue Phantom. 

Always set the high voltage to zero before connecting / disconnecting 

chamber cables or detectors. Of course, this is also fulfilled if the 

CU500E is switched off. 

1. Connect the 37-pin control cable between the DRIVE CONTROL cable 

connector, located on the rear side of the CU500E and the DRIVE 

CONTROL connector of the Blue Phantom. Take care not to force the cable 

connectors into position. Tighten the screws lightly. 

2. Connect the serial interface cable between the RS 232 C-A connector, 

located on the front panel of the CU500E control unit, and the selected serial 

interface of the computer. 

3. Connect the chamber extension cables to the appropriate Field and 

Reference TNC input sockets, located on the front panel of the control unit. 

Figure 41. The front panel of the CU500E Control Unit. 

TNC 

Field 

TNC 

Ref. 

4. Connect the hand control to the REMOTE CONTROL connector on the Blue 



Detectors 

Caution Set high voltage to zero 

Caution Use specified detectors 

Always set the high voltage to zero before connecting / disconnecting 

chamber cables or detectors. Of course, this is also fulfilled if the 

CU500E is switched off. 

Scanditronix-Wellhöfer will not be responsible for the performance of the 

system if detectors other than those specified are used for each type of 

radiation. 

Field and Reference Detector explanation 

Two detectors, a field and a reference detector, are required to use the Blue 

Phantom in continuous measurement mode under a linear accelerator. Field and 

reference detector should be of the same type, or if this is not possible, have at 

least approx. the same active volume. Standard field resp. reference detectors for 

the Blue Phantom are the CC13 ionisation chambers. 

Using the continuous measurement mode of the Blue Phantom has two 

significant advantages compared to the step-by-step (integrating) measurement 

mode. It significantly reduces scanning time, and it delivers more data points in a 

given time than in step-by-step mode. 

A linear accelerator produces pulsed radiation. If only a field detector would be 

connected and continuous measurement would be used, the pulsing of the beam 

would directly appear on the curve. The signal of a reference detector is needed 

in order to remove the accelerator's pulsing from the curve, using real-time 

division of the field detector signal by the reference detector signal. 

Field detector 

1. Mount the field detector in the phantom using the specified detector holder. 

2. Insert the detector cable into the clamp on the Blue Phantom's metal frame 

(for pull-relief of the detector). 

3. Connect the detector cable to the field chamber extension cable. 

Figure 42. The CC13 as field detector. 

Detector locking screw 

CC13 detector holder 

Detector holder locking screw 

Detector holder inclination correction 


Reference detector 

1. Mount the reference detector into the reference detector holder. 

2. Clamp the reference detector holder to the front or rear metal tube of the 

Blue Phantom's aluminum frame. 

3. Connect the detector cable to the reference chamber extension cable. 

Figure 43. The reference detector holder. 

Notes: 

1. The reference detector must always be within the primary radiation field to 

provide a stable signal. 

2. The reference detector should be placed well in the field as this reduces the 

effect of unstable field-asymmetry. On the other hand, care should be taken 

not to shadow the field detector with the reference detector. 

IMPORTANT NOTICE CU500E Warm-Up and Background subtraction 

For the CU500E, observe a warm-up and stabilisation time of 30 minutes. If 

ionisation chambers are used, the high voltage should be already applied during 

the warm-up time. If semiconductors are used, do not apply a high voltage. 

Background subtraction should be done initially after the warm-up time, then 

repeatedly every 30 minutes, and each time the gain settings have changed. 

Comments on beam direction 

The way of positioning detectors in the beam depends on the type of detector. 

• Semiconductor field detectors should be mounted vertically (i.e. parallel to 

the beam, axial radiation). 

• Semiconductor reference detectors should be mounted horizontally (i.e. 

perpendicular to the beam, radial radiation). 

• Plane parallel chambers (PPC chambers, NACP) and cylindrical chambers 

(FC chambers, RK chamber) should be mounted horizontally (i.e. 

perpendicular to the beam, radial radiation). 

• Cylindrical compact chambers (CC chambers) can be mounted either 

horizontally or vertically, or, if used as reference chamber, at any other 

angle between 0° and 90°, since they are of isotropic construction. 


Figure 44. Beam direction for different types of detectors. 

Fine-Levelling the Blue Phantom 

As the last part of the measurement setup, this section describes the fine levelling 

of the Blue Phantom's mechanical frame, using a CC13 chamber and the 

alignment cap. A different method exists for levelling the mechanical frame 

using the CA24 chamber array. This is described in the section CA24 

measurement setup. 

After filling the Blue Phantom with water, the 3-D servo frame has to be levelled 

relative to the water surface. This fine levelling is done according to the 

following procedure: 

1. Mount the CC13 detector holder in the Blue Phantom. Have the white 

alignment cap ready. 

2. Slide the CC13 chamber through the hole of the field chamber holder and 

into the hole of the alignment cap. Insert the chamber as far as possible into 

the alignment cap, usually until the thin black ring. The active volume (the 

black part) of the chamber points away from the X-axis, towards the 

phantom's front wall. 

3. Slide the chamber with the mounted alignment cap backwards until the rear 

edge of the alignment cap touches the field chamber holder. 

4. Secure the chamber in the holder by closing the chamber locking screw. 

Leave the alignment cap mounted. 

5. Switch on the CU500E control unit. 

6. Start the OmniPro-Accept software. Under Measure, Water select the Blue 

Phantom as the active measuring device and confirm with OK. This has the 

purpose to send the Blue Phantom's external limits to the CU500E control 

unit. 


Figure 45. Alignment cap mounted on the CC13. 

7. With the hand control, position the chamber into one of the corners of the 

Blue Phantom, approx. 5 cm away from each wall and at the water surface. 

8. To check whether the chamber is really at the water surface, turn the 

alignment cap so that the crosslines on the front of the cap are at 45° 

towards the water surface. Look at the cap from below the water surface. 

The exact water surface position is reached if the lines form a precise cross 

(see the figure below). 

Figure 46. CC13 exactly at water surface, seen from below the water surface line. 

9. Ensure that at the starting corner the chamber is exactly at the water surface. 

Do not use the levelling mechanism here, only position the chamber with the 

hand control. 

10. Store the current chamber position as position A on the hand control. 

70 • Setting up for measurement [DWA000 90001 02] Blue Phantom Manual 

45° 

water 

surface

11. With the hand control, horizontally move the chamber to the next corner of 

the Blue Phantom. 

Note: Do not move the servo vertically during the levelling procedure! 

12. Store this position as position B on the hand control. 

13. Look at the alignment cap. If the chamber is not exactly at the water surface, 

loosen the locking screw at this corner of the servo frame (see below). Turn 

the levelling screw to vertically adjust the mechanical frame so that the lines 

on the cap again form a precise cross. Then tighten the locking screw. 

Note: Always begin the levelling adjustment from below the water surface. 

Do not loosen one of the remaining three locking screws while adjusting 

one position. 

Figure 47. Levelling mechanism. 

Levelling screw 

Locking screw 

13. Repeat steps 11 through 13 for the two remaining corners of the Blue 

Phantom, which are stored as position C and position D. 

Note: You can use the stored positions to easily approach the levelling points 

again. 

14. Remove the alignment cap. It is not suitable for measurements. 


Setup for TPR/TMR measurements 

In addition / modification to the steps described so far, follow this procedure to 

prepare the Blue Phantom for TPR/TMR measurements. 

1. The reference chamber must be fixed on the accessory holder clamp which 

is delivered with the TPR/TMR option. Do not use the standard reference 

chamber holder during TPR/TMR measurements. 

2. If you use the AquaLift, connect the remote control cable between the 

REMOTE CONTROL connector on AquaLift and the PUMP CONTROL 

connector on the Blue Phantom. If you use the Water Reservoir with bidirectional 

pump, connect the remote control cable coming from the Water 

Reservoir to the PUMP CONTROL connector on the Blue Phantom. 

3. Fill the Blue Phantom with water only to approximately 15 cm height. Since 

the measurement starts at the water surface, you will otherwise not have 

enough scan length available. Leave the filling tube in the phantom. 

4. Verify that the float of the TMR probe also sits on the water surface. 

5. With the hand control, move the CC13 field detector to the actual water 

surface in the central beam (use alignment cap). 

6. With the hand control, define the Water Surface and the Isocenter position 

at this point. 

Note: If a TMR probe is mounted in the Blue Phantom, it can take approx. 5 

seconds until the confirmation beep appears when defining the water 

surface. This is because the system reads out the position of the float. 

7. Remove the alignment cap. 

8. Lift up the Blue Phantom until the isocenter, indicated by the laser 

crosspoints, is located at the water surface. 

Notes: 

1. If you use AquaLift, the Function selector must be in the PUMP position to 

enable remote control. 

2. It is not necessary to manually switch the system into TMR mode, neither 

during the above setup procedure nor before starting a measurement. 

3. Always redefine isocenter and water surface according to the above 

procedure before selecting a TPR/TMR measurement in the software. 

4. The detector related correction for effective point of measurement will be 

taken into account automatically. 

5. When the pump is switched on and starts pumping water into the phantom, 

a wave may disturbe the measurement. In order to minimise this effect, the 

system first pumps 2 cm of water out of the phantom, then reverts the 

pumping direction. The measurement itself starts when the previous water 

surface is reached again. This procedure is only performed when the 

measurement is done with pumping water in. 

6. In the large Blue Phantom (48 x 48 x 48) you can face the problem that the 

initial 15 cm of water are not sufficient, and during the 2 cm empty / refill 

procedure the transducer's float sits up on the bottom of the Plexiglas tube - 

which in turn causes a "position not reached" message prior to the start of 

the measurement itself. In this case fill in more water initially. 


Figure 48. Remote control cable between Blue Phantom and AquaLift resp. 

Water Reservoir. 


CA24 Chamber Array and MD240 Electrometer 

Measurements with the CA24 Chamber Array require both the MD240 

electrometer and the CU500E (the latter is used for detector positioning). 

For conventional teletherapy, a reference detector should be installed as 

described previously. 

Note: Do not use a reference detector for measurements under a dynamic 

wedge. 

The following section describes how to mount the CA24 in the Blue Phantom. 

Note: Preferably mount the CA24 in the empty phantom. 

rear wall 

front wall 

Figure 49. CA24 mounted in a Blue Phantom. 


CA24 adapter set description 

The CA24 is mounted horizontally on the X-axis of the Blue Phantom. The 

adapter set to fix the CA24 on the X-axis contains a locking shoe, a left side 

sliding shoe and a right side sliding shoe (left and right are seen when looking 

through the phantom's front wall). 

These adapters are usually mounted on the CA24 already. 

The locking shoe is located in the middle of the array's frame. When mounting 

the CA24 on the X-axis, it will surround the X-axis guide rail shoe (the metal pin 

on the guide rail shoe is not used in this case). 

Figure 50. Locking shoe. 

The left side and right side sliding shoes are used to mount the array on the Xaxis. 

These adapters have locking pieces which are pushed against the array from 

underneath the X-rail and which are secured by two sliding locks. The sliding 

locks can be easily identified by their red caps on each end. 

Metal chain 

Opening for X-axis ruler 

Hole for tooth belt 

Rear sliding lock 

Hole for X-rail 

Figure 51. Left side sliding shoe. 

Front sliding lock 

Locking shoe 

Locking piece 


Mounting the CA24 in the Blue Phantom 

Caution Leave protection cap mounted 

In order to avoid damage to the CA24, do not remove the protection cap until the 

CA24 has been mounted completely. 

Figure 52. CA24 with acrylic protection cap. 

1. If necessary remove any single detector holder from the X-axis. Position the 

X-axis guide rail shoe to the middle of the rail. The position indicator on the 

rear side of the shoe must be located at 0 cm. Move the X-rail upwards to its 

highest position. 

2. On the CA24, push the sliding locks outwards and remove the locking 

pieces. The locking pieces remain connected to the adapter by metal chains. 

3. Place yourself at the phantom's front wall, having the connector box to the 

right. Approach the X-rail holding the array in your hands in a way that the 

locking pieces hanging at their metal chains are located behind the X-axis 

ruler. Then slightly turn the array towards you and place it on the round Xrail, 

while sliding the opening at the back of the locking shoe onto the Xaxis 

guide rail shoe. 

Note: Do not yet secure the rear locking screw. 

Figure 53. Rear locking screw. 

Rear locking 

screw 

protection 

cap 


4. Mount the left locking piece by inserting the two pins in their associated 

holes at the fixed part of the adapter. Secure the locking piece by pushing 

the sliding locks inwards. Repeat the same with the right locking piece. (Left 

and right are related to the point of view you have when looking through the 

phantom's front wall). 

5. The array can possibly still be moved a small distance (a few millimeters) 

along the X-axis, but it cannot be twisted. Manually slide the array towards 

the right, then tighten the rear locking screw. 

Figure 54. CA24 mounted on X-axis. 

Mounting the CA24 cable support 

The CA24 cable support is used for guiding the CA24 signal cable to the MD240 

electrometer. Furthermore it provides a fixation mechanism for the pressure 

balance tube. 

You may choose to leave the cable support mounted also when doing 

measurements with other detectors. 

On the Blue Phantom, the cable support is installed on the mounting plate with 

the label "Mount CA24 cable support here". 

To mount the cable support, please proceed as follows. 


X potentiometer 

cable holder 

Figure 55. Mounting plate and X potentiometer cable holder. 

1. Locate the cable holder for the X potentiometer cable. Take out and open the 

two cable connectors (thus interrupting the connection of the X 

potentiometer to the phantom's connector box). 

2. Loosen and remove the two screws of the X potentiometer cable holder. 

3. Remove the X potentiometer cable holder. 

4. Mount the CA24 cable support by using the two mounting screws with black 

screw head. 

Note: The arrows on the stickers on the mounting plate and the cable support 

shall point to each other. 

CA24 cable 

support 

Screws 

Mounting screws 

Figure 56. Mounting the CA24 cable support. 


X potentiometer 

cable 

Pressure 

balance tube 

CA24 signal 

cable 

5. Insert the CA24 signal cable into the cable support (see figure below): 

a. Open the top cover of the cable support by manually pulling it upwards 

at the snap-in lock side. 

b. Insert the signal cable. 

c. Close the top cover by first inserting it into the round openings and then 

pushing it downwards to lock. 

Signal cable 

Round opening 

Snap-in lock 

Top cover 

Figure 57. Inserting the CA24 signal cable. 

6. Close the two connectors of the X potentiometer cable and attach the cable 

into its holder on top of the CA24 cable support. 

7. Attach the CA24 pressure balance tube end to the cable support by turning it 

clockwise approx. ¼ of a turn. 

Figure 58. CA24 cable support with all cables mounted. 


CA24 measurement setup 

Caution Possible collision 

Levelling plates 

Water surface 

With the CA24 mounted on the X-axis in the empty phantom as described in the 

previous section, continue with the following procedure. 

1. Manually turn the Blue Phantom on the lift table so that the X-axis coincides 

with the desired measuring direction. 

2. Remove the protection cap from the CA24. 

3. Redefine the external limits with the hand control. Especially in X direction, 

open the limits as far as possible without collision, to gain sufficient 

scanning distance. The CA24 needs a minimum of 2 cm symmetrically to 

the central beam for scanning in X direction. 

By redefining the external limits with the hand control in all three 

dimensions, make sure that the CA24 cannot collide with the phantom 

walls or other objects (TMR probe). 

4. Turn on the light field. 

5. Use the mechanisms on the lift table to adjust and level the phantom. Initial 

levelling can be done with a spirit level. Ensure that the light field crosshairs 

and the crosshairs on the bottom of the Blue Phantom are superimposed. 

6. Fill the Blue Phantom up to the desired SSD. 

7. Put the levelling plates on the CA24 as shown in the figure below. 

Figure 59. Levelling plates on the CA24. 

8. With the hand control, move the CA24 towards the Blue Phantom's rear 

wall, until the upper Y limit is reached. 

9. With the hand control, move the chamber array to some centimeters depth. 

Look into the phantom from below the water surface. At each side of the 

array, you will see the black cone on the levelling plate and its mirror. 

Slowly move the array towards the water surface until you see the tips of the 

cones touching each other. At this moment, the geometrical midpoints of the 

chambers are located exactly at the water surface. Use the levelling screws 

on this end of the mechanical frame to ensure that the CA24 is parallel to the 

water surface. 

Note: The use of the levelling screws is described in the section Fine-Levelling 

the Blue Phantom previously. 


10. With the hand control, move the CA24 towards the Blue Phantom's front 

wall. 

Note: Do not move the servo vertically during the levelling procedure! 

11. Again, look into the phantom from below the water surface. If the tips of the 

cones do not touch each other, use the levelling screws on the servo frame to 

adjust the CA24 and make it parallel to the water surface. 

12. With the hand control, move the CA24 back to the middle of the field (light 

field crosshair is reflected on the chamber tips and on the levelling plates). 

Carefully ensure that the CA24 is still at water surface. 

13. Move the CA24 on the X-axis so that the middle chamber of the CA24 

(chamber 12) is located in the central beam. 

Note: If you need to shift the CA24 by more than ±0.5 cm away from the 

middle of the rail in X direction, return to the 0 position and shift the 

whole phantom instead, using the adjustment handles on the lift table. 

14. With the hand control, define this position as Water surface. 

15. Define the same position as Isocenter. If the isocenter is not at the water 

surface but in another depth, vertically move the servo to the isocenter depth 

before. 

16. If a reference chamber is used, mount it in the standard reference chamber 

holder, and connect the 8 m chamber extension cable which is delivered 

with the CA24. 

Note: Do not use any other (longer) chamber extension cable. It is important 

for proper results of the reference division that the length of the 

chamber extension cable equals the length of the CA24 signal cable. 

Caution MD240: Set high voltage to zero 

Always set the high voltage to zero before connecting / disconnecting the 

CA24 signal cable or the reference chamber extension cable. Of course, 

this is also fulfilled if the MD240 is switched off. 

Note: You can set the high voltage to zero from the MD240 LC display by 

pressing Setup, Bias, OFF. 

17. Connect the CA24 signal cable and the small plug with the calibration 

factors to the rear side of the MD240 (see figure below). 

18. If used, connect the reference chamber extension cable to the rear side of the 

MD240 (see figure below). 


Small plug with 

calibration factors 

Figure 60. MD240 cable connections. 

19. Switch on the MD240 (or, if only the high voltage was disabled, re-enable it 

by pressing Setup, Bias, ON and Enter to return). 

IMPORTANT NOTICE Factors not read out if only high voltage was disabled 

If only the high voltage was disabled and is now re-enabled, the calibration 

factors for the CA24 are not automatically read out from the small plug. To 

enforce this, you must press the (hidden) Reset button on the MD240 after reenabling 

the high voltage. 

Reset 

(hidden) 

CA24 signal cable 

Figure 61. MD240 LC display and keys. 

Reference chamber extension cable 


IMPORTANT NOTICE MD240 Warm-Up and Background subtraction 

For the MD240, observe a warm-up and stabilisation time of 30 minutes, the 

high voltage already being applied to the CA24. 

After this warm-up time, the temperature of the MD240 should be stable and in 

the range between 36°C and 40°C. The temperature can be verified from the 

MD240 LC display by pressing Serv, Sysck and then repeatedly Next to step 

through the display until the temperature appears. Return with pressing Enter. 

Background subtraction should be done initially after the warm-up time, then 

repeatedly every 30 minutes, and each time the gain settings have changed. 

Plug CA24 signal cable. 

Plug CA24 ID connector. 

Connect reference chamber. 

Switch MD240 on. 

NO 

Plug CAN bus cable. 

MD240 

switched on? 

MD240 connected. 

Figure 62. MD240 cable connection flowchart. 

Switch HV off at front panel. 

Plug CA24 signal cable. 

Plug CA24 ID connector. 

Connect reference chamber. 

Switch HV on at front panel. 

Blue Phantom Manual [DWA000 90001 02] Setting up for measurement • 83 

YES 

Press Reset to read factors.

Setup for in-air measurements 

Headscanner servos HSC 1D and HSC 2D 

General 

The one-dimensional headscanner (HSC 1D) is inserted in the treatment 

machine's accessory holder and can be positioned inline and crossline without 

collimator rotation. 

The two-dimensional headscanner (HSC 2D) is inserted in the treatment 

machine's accessory holder and can scan along any of the two field axes and 

diagonals. The chamber is guided in a PTFE block underneath a variable 

Plexiglas build-up layer (standard 6 mm). For electron studies the twodimensional 

headscanner can also be positioned on the treatment couch with the 

electron cone touching the surface of the build-up layer. 

For both headscanners, different build-up layers are optionally available to cater 

for a variety of photon and electron energies. Build-up layers may be exchanged 

even if the headscanner is attached to the accessory holder. Furthermore, Energy 

verification can be performed by a scan underneath an optional acrylic wedge. 

Adaptations to the accessory holders of General Electric, Elekta (Philips), 

Siemens and Varian accelerators are available. 

Possible measurement types 

HSC 1D • crossline and inline (mechanical changeover of the X-rail), 

• beam (using the optional acrylic wedge). 

HSC 2D • crossline, inline, diagonals, 

• beam (using the optional acrylic wedge), 

• isodoses (isodose tracking option). 

Installing the headscanner and detectors 

Install the headscanner on the treatment head as follows: 

1. Insert the headscanner into the accessory holder right up to the 

headscanner's mechanical stop. 

Note: The gun sticker shall face the gun side and the targ et sticker shall face 

the target side. 

2. Fine adjust and tighten the headscanner onto the accessory holder with the 

clamping levers. 

3. Insert the field detector into the PTFE block on the X-rail of the 

headscanner. Fasten the detector cable into the cable clips. Make sure that 

the detector cable will not cause any mechanical jam or disturb the 

measurement at any angle. 

Note: Only the CC13 ionisation chamber can be used as field detector due to 

the adaptation hole in the PTFE block. 


4. Insert the reference detector into the reference chamber clamp and fix the 

clamp at the treatment head. 

5. The cable set from the Blue Phantom (control cable, hand control, chamber 

extension cables) is also used for the headscanner. Connect the hand control 

and the control cable to the headscanner, and the chambers to the chamber 

extension cables. 

6. Switch on the CU500E. With the hand control, position the field detector 

into the midpoint of both directions (identified by a scratch mark on the 

rails). It is also possible to use the OmniPro-Accept software, select the 

appropriate headscanner type and position to zero in both directions (use 

servo coordinates). 

7. Check that the crosshairs of the PTFE block and the crosshairs of the light 

field are superimposed. If necessary, fine-adjust the mechanical stop or the 

clamping mechanism to ensure coincidence of the collimator cross hairs and 

the PTFE block crosshairs. 

8. Tighten all screws with counter-nuts where provided to ensure a 

reproducible positioning for future use. 

Mounting of Build-up layers and Wedge 

The build-up layers and the optional acrylic wedge may be attached to the 

headscanner without removing the latter from the accessory holder. 

By opening the two black headed screws, the build-up layer may be pulled out 

and a different build-up layer or the acrylic wedge may be inserted in a similar 

way. 

Measurement Setup 

The one-dimensional headscanner can either measure inline or crossline profiles 

without being removed from the accessory holder. This is achieved by loosening 

the two hex-set screws holding the X-rail on the fixed dovetail shoes. 

The X-rail assembly can be removed and turned by 90°. It is then connected to a 

second set of fixed dovetail shoes and tightened with the hex-set screws again. 

Notes: 

1. Ensure that the X-rail is inserted until the mechanical stops are reached, 

which have been pre-adjusted in the factory. 

2. To ensure that the stops are in the correct position verify that the crosshairs 

on the PTFE block and the crosshairs of the light field are superimposed. 

Since the one-dimensional headscanner cannot be positioned on the treatment 

couch, the measurement of electron beams using an electron applicator is not 

possible. 


The two-dimensional headscanner (HSC 2D) can be positioned in the accessory 

holder as well as on the treatment couch, with an electron applicator touching the 

Plexiglas build-up layer. The table below shows the various build-up layers, 

which are optionally available for measurement of electrons and photons. A 

standard 6 mm build-up layer is delivered with each headscanner. 

Thickness (mm) Photons (MV) Electrons (MeV) 

10 

15 

20 

25 

86 • Setting up for measurement [DWA000 90001 02] Blue Phantom Manual 

1 - 4 

4 - 6 

6 - 10 

10 - 15 

4 - 8 

8 - 12 

12 - 18 

> 18 

Table 1. Additional build-up layers for measurement of electrons and photons. 

To carry out measurement, proceed as follows. 

1. Prepare the OmniPro-Accept Software for measurement. 

2. Select the appropriate headscanner type. 

3. Once the headscanner is selected, the appropriate limits are transmitted by 

software to the control unit. Defining external limits are not necessary, as 

the external and mechanical limits are set automatically by the software. 

4. Define the isocenter with the hand control. 

5. When measuring with the acrylic wedge the definition of the water surface 

at one end of the wedge is also required. Furthermore, select beam as 

measurement type in this case. Then the profile, which is scanned under the 

wedge, is displayed as a depth dose curve. 

For further details, please see the OmniPro-Accept System Manual. 

Attachments and accessory holders 

On the following pages you can find drawings of the different headscanners, i. e. 

of the one-dimensional (HSC 1D) and two-dimensional (HSC 2D) versions. On 

the drawings of the two-dimensional (HSC 2D) version critical dimensions are 

shown for the various accelerator types. 

You will also find drawings showing how to attach the reference chamber clamp 

onto the accessory holder of the various accelerator types. This clamp is 

delivered as standard with the headscanner.

Top view 

Front view 

Figure 63. Elekta (Philips) accessory holder and reference probe holder. 

Figure 64. Elekta (Philips) and Siemens headscanner HSC 1D. 

Dimension Y: 

Reference 

probe holder 

Accessory 

holder 

Reference 

probe holder 

Elekta Y = 8.4 mm 

Siemens Y = 10.8 mm 

Dimension V: 

Elekta V = 20.5 mm 

Siemens V = 13.5 mm 

Mechanical stop 



Figure 65. Elekta (Philips) headscanner HSC 2D. 

Dimension C = 0 mm 

Dimension V = 30 mm 

Bottom view 

Front view 

Figure 66. Siemens Mevatron accessory holder and reference probe holder. 

Reference probe 

holder 

Accessory 

holder 


Figure 67. Siemens headscanner HSC 2D. 

Top view 

Front view 


Dimension C = 8 mm 

Dimension V = 18 mm 


holder 

Isocenter 

Field 

10 cm x 10 cm 

Figure 68. GE Saturne series 4 accessory holder and reference probe holder. 



Figure 69. GE Saturne series 4 headscanner HSC 2D. 

Figure 70. Varian accessory holder and reference probe holder. 


holder 

Top view 

Front view 



Figure 71. Varian headscanner HSC 1D. 

Figure 72. Varian headscanner HSC 2D. 

Pre-adjustment 


Dimension V = 19.5 mm 

Dimension V = 28.5 mm 



Maintenance 

Introduction 




To ensure reliable operation, the mechanical parts of the servo systems should be 

inspected, cleaned and lubricated at regular intervals. The CU500E does not 

require regular maintenance and the AquaLift, Water Reservoir and Lift Table 

require very little maintenance. 

This chapter provides instructions for regular maintenance and the replacement 

of spare parts. 

The CU500E contains lethal voltages up to 240 V AC and 480 V DC. 

Switch off and disconnect supply before servicing. 

The MD240 contains lethal voltages up to 265 V AC and 800 V DC. 

Switch off and disconnect supply before servicing. 

AquaLift, Electrical Lift Table and Water Reservoir contain lethal 

voltages up to 240 V AC. Switch off and disconnect supply before 

servicing. 

Blue Phantom Manual [DWA000 90001 02] Maintenance • 93

Daily Check 

Monthly maintenance 

AquaLift and Water Reservoir 

Check the following each time you use the pump: 

1. Check that the water is not dirty. If there are particles in the water, do as 

follows: 

a. Change the water. 

b. If the water still gets dirty, replace the pump impeller (applies only to 

AquaLift). See instructions in the section Replacing spare parts. 

2. Check that there is no leakage. If there is leakage, check hose joints and 

tighten if necessary. 


The high-precision servo system must always be handled carefully to maintain 

its accuracy and to ensure smooth operation. In particular, it should be clean and 

free from dust. The latter is especially important at building sites where new 

treatment machines are being installed. Concrete dust may damage the tracks and 

ball bearings of the servo and cause operational problems or reduce the 

precision. Therefore, always store the Blue Phantom under clean conditions. 


To prevent growth of algae, always use distilled or de-ionised water when 

filling the Blue Phantom from a water reservoir. 




94 • Maintenance [DWA000 90001 02] Blue Phantom Manual

Y-rail 

Cleaning and lubricating the visible parts of the servo should be done at monthly 

intervals or when they appear dirty. 

Z-rail 

Z-drive assembly 


1. Use a cotton cloth moistened with alcohol or white spirit to clean the X-, Yand 

the Z-rails. 

2. Use a small, soft brush to apply a few drops of fine grade lubricant to the Yrails. 

3. Move the servos manually in the Y-direction to distribute the lubricant. 

Wipe off superfluous lubricant. 

Use a cotton cloth and soap solution to wipe off dirt and calcareous deposits 

from the inside and outside of the water phantom. Do not use alcohol or other 

solvents as these may damage the Perspex material. 

HSC 1D and HSC 2D 

The high-precision headscanner servo system must always be handled carefully 

to maintain its accuracy and to ensure smooth operation. In particular, it should 

be clean and free from dust. Therefore, always store the headscanner under clean 

conditions. 

Cleaning the visible parts of the headscanner should be done at monthly intervals 

or when they appear dirty. Use a cotton cloth and soap solution for cleaning. 

AquaLift, Water Reservoir, Lift Table 

Y-drive 

assembly 

X-drive 

assembly 

Use a cotton cloth and soap solution to wipe off dirt and calcareous deposits 

from the outside of the Electrical and Mechanical Lift Table, Water Reservoir 

and AquaLift. 

Blue Phantom Manual [DWA000 90001 02] Maintenance • 95 

Y-rail 

X-rail 

Z-rail

Yearly Maintenance 


Checking positioning accuracy 

After cleaning, check positioning as follows: 

1. Connect the hand control to the Blue Phantom. 

2. Connect the Blue Phantom to the CU500E as described in the chapter 

Setting up for measurement. 

3. On the servo frame scales, note the position of the detector holder relative to 

suitable reference points in the X, Y and Z directions. 

4. In the OmniPro-Accept software, open the CU500E Control Panel and select 

Goto. 

5. Enter commands to move the servo to the following positions (use servo 

coordinates): X=100.0 mm, 200.0 mm, -200.0 mm, -100.0 mm and 0.0 mm. 

6. For each position, record the displayed position and the distance measured 

with the ruler or measuring tape. 

7. Repeat the test for the Y-axis and the Z-axis. 

8. Check that the measured positions do not differ more than ± 1 mm from the 

displayed positions. 

9. If positioning is inaccurate, your system needs to be serviced. Call your 

Scanditronix-Wellhöfer service representative. 

HSC 1D and HSC 2D 

Checking positioning accuracy 

Check positioning as follows: 

1. Connect the hand control to the headscanner. 

2. Connect the headscanner to the CU500E as described in the chapter Setting 

up for measurement. 

3. Note the position of the detector carriage relative to a suitable reference 

point on the drive rail. 

4. In the OmniPro-Accept software, open the CU500E Control Panel and select 

Goto. 

5. Enter commands to move the servo to the following positions (use servo 

coordinates): X=100.0 mm, 200.0 mm, -200.0 mm, -100.0 mm and 0.0 mm. 

6. For each position, record the displayed position and the distance measured 

with the ruler or measuring tape. 

7. When using the HSC 2D, repeat the test for the Y-axis. 

8. Check that the measured positions do not differ more than ± 1 mm from the 

displayed positions. 

9. If positioning is inaccurate, your system needs to be serviced. Call your 

Scanditronix-Wellhöfer service representative. 


Lift Table 

Mechanical parts 

All external parts of the lift table may be cleaned using commercially available 

detergents. No organic solvents must be used. 

1. Remove the Blue Phantom from the lift table. 

2. Clean with a fat dissolving detergent (e.g. alcohol) the bearings of rollers 

and parking brakes. 

3. Grease the parts mentioned above. 

4. The lift table should be checked for any signs of physical damage. Defective 

parts should be replaced. 

Electrical Lift Table only: The telescope drive is maintenance free for 20,000 

times lifting and lowering over 300 mm vertical range. After this, the lift table 

may be send for revision to our factory. 

Electrical control unit (Electrical Lift Table only) 

It is not permitted to open the electrical control unit. There are no user 

serviceable parts inside. In case of malfunction, the whole electrical control unit 

must be exchanged (see the section Replacing spare parts). 

It is required that the function of the overcurrent circuit breaker at the lowest and 

at the highest position is verified every 6 months. To do this, drive the lift table 

to the end positions under visual control. The overcurrent circuit breaker is 

working if the lift table stops at the end position and no noise from the motor can 

be recognised. 

To clean the housing of the electrical control unit, use a soft, dry duster or a 

duster moistened with a gentle cleaning agent. Do not use organic solvents. The 

liquid you use for cleaning must be pH-neutral. Attention! Water or cleaning 

liquid seeping into the electrical control unit will destroy the same. 

Hand control (Electrical Lift Table only) 

To clean the housing of the hand control, use a soft, dry duster or a duster 

moistened with a gentle cleaning agent. Do not use organic solvents. The liquid 

you use for cleaning must be pH-neutral. 

The hand control should be checked for any signs of physical damage. Defective 

parts need to be exchanged. Water or cleaning liquid seeping into the hand 

control will destroy the same. 


2-yearly maintenance 


All external parts of the water reservoir may be cleaned using commercially 

available detergents. No organic solvents must be used. 

1. Make sure the water reservoir is empty. 

2. Clean with a fat dissolving detergent (e.g. alcohol) bearing of rollers and 

parking brakes. 

3. Grease the bearings. 

4. Check the proper function of the mechanical valve of the filling tube and 

adjust the valve or the screw if necessary. (Check the function of the 

electromagnetic valve by filling the water phantom. Leave the filling tube 

installed. If water flows back into the water reservoir by gravity, the valve is 

not functioning and should be replaced). 

5. The water reservoir should be checked for any signs of physical damage. 

Defective parts should be replaced. 

AquaLift 

The bearings of the rear (turning) wheels should be lubricated with ball bearing 

grease at 2-year intervals. Nipples are available for filling with a grease gun. 

Wheels to be 

lubricated 

Figure 74. Rear wheels on AquaLift. 


Replacing spare parts 

WARNING USE ONLY APPROVED PARTS 

Only spare parts provided or approved by the manufacturer must be 

used, otherwise operator safety and interference-free operation 

cannot be guaranteed. Violation will result in loss of warranty. 

Scanditronix-Wellhöfer cannot be held liable for any damages 

resulting from the use of accessories or consumables which are not 

provided or approved by the manufacturer. 

WARNING ONLY AUTHORIZED PERSONS SHALL REPAIR EQUIPMENT 

Assembly, extension, modification or repair shall only be carried out 

by Scanditronix-Wellhöfer or by persons who have sufficient 

knowledge and skills and are authorised by Scanditronix-Wellhöfer. 

CU500E and MD240 

Replacing mains fuse 

WARNING HIGH VOLTAGE 

Always disconnect the mains supply before removing the mains 

fuses. 

You need a 3 mm flat-head screwdriver to open the fuse holder in the main 

switch. 

Replace the fuse in the main switch as follows: 

1. Turn off power to the unit and disconnect the power supply cord. 

2. Insert the screwdriver in the slot at the fuse cover. 

3. Pull out the fuse holder. 

CU500E 

Figure 75. Replacing CU500E and MD240 mains fuses. 

MD240 


4. Replace the fuse with the same type and rating (see table below). 

5. Insert the fuse holder. Note that the arrow beside the selected voltage range 

must point downwards to the white line on the mains connector (applies 

only to CU500E). 

Voltage Fuse 

CU500E 230 V 5 x 20 mm T1/250 IEC 127/2-5 

115 V 5 x 20 mm T2/250 IEC 127/2-5 

MD240 85 V – 265 V 5 x 20 mm T3, 15/250 IEC127/2-5 

surge proof 

Table 2. Fuses for CU500E and MD240. 


Resetting automatic fuse 

The Water Reservoir is equipped with an automatic fuse (6.3 A, time-lag) which 

may release if the pump unit is temporarily overloaded. To reset the automatic 

fuse, do as follows: 

1. Loosen the retaining screws and remove the front cover from the Water 

Reservoir carriage. 

2. Reset the automatic fuse by pressing the automatic fuse button, see below. 

3. Mount the front cover and fasten the retaining screws. 

Figure 76. Water Reservoir control unit with automatic fuse button. 

Automatic fuse button 


AquaLift 

Removing cover 

For access to the fuses, the transformer and the pump, the pump box cover must 

be removed. A 5 mm flat-head screwdriver is required. 

Remove the pump box cover as follows: 

1. Turn off power and disconnect the power supply cord. 

2. Loosen the four retaining screws and remove the front cover from the pump 

box. 

3. Loosen the earth wire on the cover. 

4. When re-attaching the cover, remember to fasten the earth wire. 

Screws, two on 

each side. 

Figure 77. Pump box retaining screws. 


Replacing fuses 

The fuses are located on one side of the connection box. Replace the fuses as 

follows: 

1. To open a fuse holder, press the cap and rotate it ¼ turn counter-clockwise. 

Pull out the cap with the fuse, see below. 

2. Replace the fuses with the same type and rating: 

• Fuse F1: T6.3AL, 250 V 

• Fuse F2: T6.3AL, 250 V 

• Fuse F3: T10AL, 250 V 

3. Re-insert the cap with the new fuse into the fuse holder. Turn the cap ¼ turn 

clockwise to lock the fuse holder. 

Transformer 

Automatic 

fuse 

Figure 78. Interior of pump box with transformer and connection box. 

Figure 79. Connection box with fuse holders. 

Resetting automatic fuse 

Connection box 

with fuses 

The transformer is equipped with an automatic fuse (1.8 A) which may release if 

the transformer is temporarily overloaded. To reset the automatic fuse, press the 

button near the cable inlet on the transformer, see the first figure above. 


Replacing the impeller 

You need the following tools and parts to replace the impeller: 

• Wrench, 8 mm, 

• Cotton cloth, 

• Water or ethanol for cleaning, 

• Impeller. 

Replace the impeller as follows: 

1. Loosen the four end cover screws on the pump and remove the end cover. 

2. Pull out the impeller. 

3. Clean the surfaces of the pump body, the end cover and the end cover seal 

(O-ring). 

4. Insert a new impeller: carefully press it onto the motor shaft. 

5. Insert the end cover seal. 

6. Mount the end cover and fasten the retaining screws. 

Figure 80. Replacing the pump impeller. 



Replacing the electrical control unit 

You need the following tools: 

• open-end wrench size 17, 

• open-end wrench size 10, 

• hex wrench size 6, 

• hex wrench size 5, 

• hex wrench size 4. 

Replace the control unit as follows: 

1. Remove the phantom from the lift table. Move the platform to a height of 

approx. 10 cm above the lowest position. 

Note: It is possible to leave the levelling frame mounted. However, the 

following pictures show the lift table without levelling frame since this 

permits better recognition of the screws. 

2. Open and remove the four screws on the blue resting plate. Open-end 

wrench size 17. 

Figure 81. Screws on the resting plate. 


3. Remove the blue resting plate from the top of the telescope mechanism. 

Figure 82. Removing the resting plate. 

4. Open and remove the 6 screws on the bottom side of the cabinet. They are 

screwed into the cabinet from below. Hex wrench size 5 for the screws, 

open-end wrench size 10 for the nuts. 

Figure 83. Screws on the bottom of the cabinet. 


5. Loosen (but do not remove) the screws which fix the metal handle. Hex 

wrench size 6. 

Figure 84. Screws of the metal handle. 

6. Lift the cabinet upwards and let it rest on top of the telescope mechanism. 

This allows to access the electrical control unit. 

Electrical 

control unit 

Figure 85. Lift up the cabinet. 


Cables from telescope 

drive motor. It doesn't 

matter which of the two 

cables is connected to 

socket 1 and which 

one to socket 3. 

Power cord. 

Cable from hand control. 

9 pin D-sub. 

7. Open and remove the screws which fix the control unit on the lift table's 

bottom frame. Hex wrench size 4. 

Figure 86. Remove locking screws of electrical control unit. 

8. Release the round connectors by turning them about 10 degrees 

counterclockwise, and pull them out. Release the rectangular connectors by 

carefully spread the brackets and pull them out. The following figure 

explains which connector belongs to which socket. 

Socket 2 is not used. 

Figure 87. Electrical control unit: cable connection. 

To mount the spare electrical control unit and to re-assemble the table, follow the 

above steps in reverse order while tightening the indicated screws instead of 

opening them. 



Specifications 

General 

Standard Equipment 

This chapter lists the equipment included with the standard Blue Phantom , as 

well as optional accessories. It also summarises technical data for the equipment. 

The table below lists all items that are delivered with a Blue Phantom. 

Quantity Item 

1 3-D Water Servo 

1 Hand Control 

1 Filling tube 

1 Transport Locking (keep for future transport!) 

1 Dust cover 

1 Holder for field detector 

1 set Holder for reference detector 

1 Main Control Unit (CU500E) 

1 Power supply cord 

1 Serial cable for connection to PC, 1.5 m 

1 9-to-25-pin serial adapter 

1 Drive Control Cable, 18 m 

1 Blue Phantom Manual 

1 Packing List 

Table 3. Delivered items, Blue Phantom system. 

The standard items and all additional items according to the purchase order are 

stated on the packing list coming with the phantom. 

Blue Phantom Manual [DWA000 90001 02] Specifications • 109

Accessories 

Order number Item 

Lifting Carriages + TMR 

989-310 AquaLift water reservoir and lifting carriage (requires 

Draining pipe) 

M5001400 Draining Pipe for AquaLift 

HA03-000 Electrical lift table, 230V, for 115V order HA03-010 

HA01-000 Mechanical lift table 

HA05-000 Water reservoir with bi-directional pump, 230V, for 115V 

HA05-010 

SA01-xxx TPR / TMR measurement set in combination with 

-001 -HA05-xxx for use with Siemens Linac 

-002 -HA05-xxx for use with Elekta Linac 

-003 -HA05-xxx for use with Varian Linac 

-401 -AquaLift for use with Siemens Linac 

-402 -AquaLift for use with Elekta Linac 

-403 -AquaLift for use with Varian Linac 

In-Air Scanner 

SA07-000 Headscanner HSC 1D (adapter for linac neccessary) 

SA08-000 Headscanner HSC 2D (adapter for linac neccessary) 

SA12-00x Adapter for attachment of headscanner HSCAN1 and 

HSCAN2 to Linac incl. reference chamber holder 

-001 Adapter to Siemens Linac 

-002 Adapter to Elekta Linac 

-003 Adapter to Varian Linac 

SA91-000 Acrylic build-up plate 10 mm for HSC 1D and HSC 2D 




SA10-000 Acrylic energy wedge for HSC 1D and HSC 2D 

SA11-000 Reference chamber clamp for accessory holder 

SA05-000 Table Scanner 

Detectors 

DS20-000 CA24 Chamber Array and MD240 24-channel electrometer 

DS05-000 CC01 compact cylindrical ionisation chamber 




PH40-000 Holder for CC ionisation chambers 

SA61-000 Acrylic build-up cap 13 mm diameter for CC13 






SA67-000 Acrylic build-up cap holder for Blue Phantom 

PS10-000 Set of brass alloy build-up caps for CC13 

DS30-000 PPC05 parallel plate ionisation chamber 

PH41-000 Holder for PPC05 ionisation chamber 

DS31-000 PPC40 parallel plate ionisation chamber 

PH42-000 Holder for PPC40 ionisation chamber 

953-000 NACP parallel plate ionisation chamber, adapter needed 

PH43-000 Holder for NACP ionisation chamber 

953-096 BNC/Banana-TNC adapter for NACP chamber 

DS04-000 FC65-G Farmer type ionisation chamber 

110 • Specifications [DWA000 90001 02] Blue Phantom Manual

Technical Data 

DS24-000 FC65-P Farmer type ionisation chamber 

DS23-000 FC23-C Farmer type ionisation chamber 

PH44-000 Holder for FC ionisation chambers 

SA69-000 Acrylic build-up cap 30 mm diameter for FC65 




999-602 T EFD, 3G-pSi Field detector for electrons, TNC 

999-702 T Hi-pSi 3G Field detector for photons, TNC 

999-750 T Hi-pSi Stereotactic detector, TNC 

PH47-000 Holder for Hi-pSi Field detectors and for RK chamber 

999-802 T Reference detector 

735491 Set of 5 brass build-ups for 3G-pSi diode and RK-chamber 

Table 4. Accessories for the Blue Phantom. 

CU500E 

Mains supply 115 V AC or 230 V AC (±15 %) 

Mains frequency 47 to 63 Hz 

Fuses (external) 115 V: 5x20 mm T2/250 IEC 127/2-5 

230 V: 5x20 mm T1/250 IEC 127/2-5 

Fuses (internal) ± 5 V: 5x20 mm T6.3/250 IEC 127/2-5 

±15 V: 5x20 mm T1.6/250 IEC 127/2-5 

±30 V: 5x20 mm T1.6/250 IEC 127/2-5 

Power Input 80 VA 

Table 5. CU500E power supply. 

External input, Field TNC triaxial connector 

External input, Reference TNC triaxial connector 

External input, Field BNC coaxial connector 

External input, Reference BNC coaxial connector 

SERIAL comm. connector 25-pin male D-sub (RS 232 C-A) 

SERIAL comm. connector 25-pin male D-sub (RS 232 C-B) 

Table 6. CU500E front panel connectors. 

Mains power input 42R connector 

DRIVE CONTROL input 37-pin female D-sub 

TRIGGER input/output 15-pin male D-sub 

Table 7. CU500E rear panel connectors. 

Warm-up time 30 minutes 

Temperature range +18°C – +25°C 

Relative humidity 55% – 75% without condensation 

Pressure 500 – 1060 hPa 

Table 8. CU500E working conditions. 

Temperature range -20°C – +50°C 

Relative humidity 10% – 90% without condensation 


Pressure 500 – 1060 hPa 

Table 9. CU500E storage conditions. 

Size [mm] 460 x 400 x 160 (L x W x H) 

Weight 13 kg 

Table 10. CU500E dimensions. 

Notes: 

1. The CU500E is EMC compliant according to EN60601-1-2. 

2. The CU500E is factory calibrated. The calibration is valid for 2 years. The 

calibration label can be found on the CU500E's housing. For recalibration, 

the CU500E must be sent to the factory. 


Serial cable 

Unit CU 500 E PC 

Connector type 25p 9s 

Pin # 1 cable hood 

2 2 

3 3 

4 8 

5 7 

6 4 

7 5 

8 4 

20 6+1 

Table 11. Serial cable configuration. 


Phantom material Acrylic plastic (Perspex), 10 mm (bottom 15 mm) 

Scanning volume 480 x 480 x 410 mm or 480 x 480 x 480 mm 

Windows (option) Horizontal and vertical, width 30 mm 

(details user defined) 

Weight 45 kg without water 

Servo range 480 mm, 480 mm, 480 mm 

Motors Precision DC motors 

Feedback High linearity potentiometers 

Speed 15.0, 5.13 and 1.75 mm/s (OmniPro-Accept 

software) 

Position accuracy ± 0.5 mm per axis 

Reproducibility ± 0.1 mm 

Orthogonality ± 0.2° 

Table 12. Blue Phantom specifications. 

Operating temperature +18°C – +25°C 

Storage temperature -20°C – +50°C 

Relative humidity (operating) 55% – 75% without condensation 

Relative humidity (storage) 10% – 90% without condensation 

Table 13. Climatic conditions Blue Phantom. 


Accessories 

In-air Headscanner HSC 1D 

Servo size [mm] 440 x 370 x 140 (L x W x H) 

Servo range 270 mm 




software) 

Position accuracy ± 0.5 mm 


Table 14. In-air Scanning Servo Specifications. 

In-air Headscanner HSC 2D 

Servo size [mm] 500 x 500 x 270 (L x W x H) 

Servo range 270 mm 




software) 

Position accuracy ± 0.5 mm 


Table 15. In-air Scanning Servo Specifications. 

AquaLift 

Lifting range 695 – 1195 mm (above floor) 

Lifting speed about 15 mm/second 

Levelling ± 0.6° 

Rotation ± 1.5° 

Horizontal Adjustment ± 25 mm 

Fine-adjustment of height ± 5 mm 

Mains supply 100-120 V AC or 220-240 V AC (±10 %), 

50–60 Hz 

Power consumption Max. 950 VA 

Water flow control 7–22 litres/minute 

Pump and valve control Local and remote, TMR control standard 

Reservoir capacity 215 litres 

Table 16. AquaLift specifications. 



Maximum load capacity: 250 kg 

Weight: 116 kg 

Drive: self-locking telescope drive, 

DC motor 24 V / 250 W 

Mains connection: Type 4115: 115 V, 60 Hz 

Type 4230: 230 V, 50 Hz 

Vertical range: 740 – 1240 mm (above floor) 

Vertical speed: 13 mm/second 

Wheels: Two fixed and two steerable rollers with 

parking brakes 

Maximum load on the floor at 124 kg 

one roller: 

Dimensions: Total Length: 840 mm 

Total Width: 680 mm 

Levelling Frame 

Vertical range for fine 20 mm 

adjustment: 

Horizontal range for fine 15 mm 

adjustment: 

Table plate: 19 mm thick 

Length/Width: 680 x 680 mm 

Table 17. Electrical Lift Table specifications. 


Tank volume: Approx. 220 l 

Weight (empty): 70 kg 

Pump: DC motor 24 V / 250 W 

Pump capacity: 20 l / minute 

Mains connection: Type 306/1: 230 V, 50 Hz 

Type 306/2: 115 V, 60 Hz 

Power rating: Type 306/1: 350 W 

Type 306/2: 350 W 

Wheels: Two fixed and two steerable rollers with 

Maximum load on the floor at 

one roller: 

parking brakes 

110 kg 

Dimensions: Total Length: 1000 mm 

Total Width: 670 mm 

Total Height: 870 mm 

Table 18. Water Reservoir specifications. 


Environmental Conditions (Working) 

The following environment conditions must be observed: 

Temperature Range +10°C - +40°C 

Relative Humidity 10% - 75% without condensation 

Environmental Conditions (Storage) 

The following environment conditions must be observed: 

Temperature Range -20°C - +50°C 

Relative Humidity 10% - 90% without condensation 

Pressure 500 - 1060 hPa 

Store the lift table and the water reservoir in dry and air-conditioned rooms 

only! 

Table 19. Environmental conditions for Electrical Lift Table and Water Reservoir. 

CA24 

Number of detectors 23 

Distance between detectors 20 mm 

Volume per chamber: 0.14 cm 3 

Chamber wall thickness: 0.4 mm 

Chamber wall material Polyoximethylene, conductive plastic 

Chamber electrode material: Polyoximethylene, conductive plastic 

Cable length: 8 m 

Connector: 23 pin triaxial push / pull connector 

Table 20. CA24 specifications. 


MD240 

Device type: Simultaneous measuring 24-channel-dosimeter 

Power supply: 85 V to 265 V, 50 / 60 Hz 

Power consumption: 40 VA 

Warm-up time 30 minutes 

Leakage current: < 2 x 10 -14 A 

Ambient humidity: 10% to 75% (relative) 

Ambient temperature: 10 °C to 40 °C 

Electrical safety: Exceeds IEC 60601-1 

EMC: VDE 0160/2, IEC 801 

NAMUR, VDE 0871/b 

EN55 022/B 

Fuse: 5 x 20 mm T3, 15/250 IEC 127/2-5, 

surge-proof 

No of input channels: 23 + 1 

Signal inputs: 24 pin triaxial connector for CA24, 

triaxial TNC for reference detector 

Information inputs: ID connector for CA24 and CC13, 

ID connector for pressure and temp. detector 

Computer interface: CAN-Bus (two connectors) 500 kBit/s 

Max. Length of link cable: 60 m 

Service interface: RS232 

Baud rate: 9600 to 38400 baud 

Measuring principle: 24 simultaneous measuring 20 bit ΣΔ-charge 

converter 

Sampling time 30 ms to 3 s 

Measuring time: 30 ms to several hours 

Input range: ±25 pA to ±1.0 µA 

Resolution: 0.5 fA to 50 pA 

Digital resolution: 16 bit 

Bias voltage: ± 800 V in steps of 1 V 

Bias voltage resolution: < 1% 

Current limit bias voltage: < ± 0,3 mA 

Linearity: < ±0.03% of full scale 

Gain drift: < ±0.004% / °C 

Offset compensation: automatically in 10 s 

Transient time: < 1ms 

Precision of charge 

measurement: 

better than ± 0,5% 

Long-time drift: < 0,15% / year 

Input current for 25% ± 5x10 -12 A 

resolution: 

Resolution: 0,05% that is ± 12x10 -15 A to ± 0,5x10 -9 A 

Microcontroller: Motorola 68332 

Clock frequency: 16 MHz 

Memory: 256 Kbytes Flash EEPROM 

32 Kbytes parallel EEPROM 

256 Kbytes RAM 

Dimensions: 342 x 257 x 140 mm 

Weight: 8 kg 

Table 21. MD240 specifications. 


TMR Probe 

Measuring range 400 mm, see below 

Resolution 0.15 mm 

Linearity 0.05% 

Filling/draining speed 5 cm/min 

Table 22. TMR Probe specification. 

4400 

(8.975 V) 

2400 

(5.000 V) 

400 

(1.025 V) 

Blue Phantom Bottom 

Figure 88. TMR probe dimensions. 

400 mm 

usable range 

40 mm not usable area 

60 mm not usable area 

Distance to the bottom: 

Blue Phantom 48 x 48 x 41 cm 3 : 45 mm 

Blue Phantom 48 x 48 x 48 cm 3 : 110 mm 


Appendix A - Complaint report 

Reporting complaints 

Report all complaints about the Blue Phantom to any representative of 

Scanditronix-Wellhöfer or directly to: 




Germany 

Phone: +49 9128 607-0, Fax: +49 9128 607-10 


Use the forms enclosed in this appendix. Describe the fault as specifically as 

possible. If needed, make more photocopies of the form. If there is no copy of 

the form, make a written report describing the fault as specifically as possible. 

Blue Phantom Manual [DWA000 90001 02] Appendix A - Complaint report • 119

(This page intentionally left blank) 

120 • Appendix A - Complaint report [DWA000 90001 02] Blue Phantom Manual

Complaint Report Blue Phantom 

Issuing person: Date: 

Customer information 

Customer name: Contact person: 

Address: 

Tel: Fax: E-mail: 

Product information 

Hardware unit: Id /Serial number: 

Software version: Id /Serial number: 

Appendices: 

Description of the complaint 

Complaint reported by: Date: Signature: 

To be sent to: 

Wellhöfer Dosimetrie, Bahnhofstraße 5, D-90592 Schwarzenbruck, Germany 

Fax. no. (49) 9128-607-10 








Address: 





Appendices: 





Fax. no. (49) 9128-607-10 








Address: 





Appendices: 





Fax. no. (49) 9128-607-10

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