Abstracts Brochure - CERN

WEPCH — Poster Session 28-Jun-06 16:00 - 18:00
magnets. We have carried out the numerical simulations to investigate the possibility of these compact systems. In
this conference, we will talk about results of the simulations and future plans.
The Indiana University Proton Therapy System
The Midwest Proton Radiotherapy Institute
(MPRI)was designed by the Indiana Univer- D. Friesel (IUCF)
sity Cyclotron Facility (IUCF)to deliver proton
radiation treatment to patients with solid tumors or other diseases susceptible to radiation. The IUCF Proton
Therapy System (PTS)has five unigue subsystems to perform the radiation treatment; Beam Delivery, Dose Delivery,
Patient Positioning and Treatment Control systems. The MPRI Clinic began operations in 2003 with a single Fixed
Horizontal Beam Line (FHBL)treatment room and is being expanded to include two additional treatment rooms
utilizing modified IBA* 360 degree rotating gantry systems. The Gantry nozzles use a beam wobbling and energy
stacking system to produce the lateral and longitudinal beam distributions required for patient treatment. A treatment
control system** provides a single user interface to deliver and monitor Proton Therapy treatment. This paper will
present an brief overview of the Proton Therapy Facility, the properties and examples of the beam performance of the
unique Nozzle design, and a summary of the facility beam operations.
* Ion Beam Applications, Inc, Belgium ** Design of a Treatment Control System for a Proton Therapy Facility, Joe
Katuin, these proceedings
A Dramatically Reduced Size of Gantries for the Proton/Carbon Therapy
Gantries in the proton/carbon cancer therapy
machines represent the major cost and D. Trbojevic, R.C. Gupta, B. Parker (BNL)
are usually very large. This report explains
a new way for the gantry design. The size and cost of the gantries are reduced, and their use is simplified by using
the fixed magnetic field. The "new" gantry is made of a very large momentum acceptance non-scaling Fixed Field
Alternating Gradient (FFAG) quarter and half arc beam lines. The gantry is made of combined function magnets with
a very strong focusing and small dispersion function. Additional magnets with a fast response are required to allow
adjustments of the beam position for different energies at the beginning of the gantry. The strong focusing magnets
following the gantry have to be adjustable as well to provide the required spot size. The adjustable dipoles provide
the radial scanning. The fixed field combined function magnets could be made of small permanent magnets for the
proton machine, or of the high temperature superconductors or superconductors for the carbon machine, reducing
dramatically the size.
Ion Implantation Via Laser Ion Source
We report on the development of a new implantation
technique via laser ion source. By F. Belloni, D. Doria, A. Lorusso, V. Nassisi (INFN-Lecce)
applying a high voltage on the accelerating
gap, this compact device was able to accelerate towards a substrate ions from ablation plasma. The occurrence of arcs
during the extraction phase was a major problem to overcome. A pulsed KrF laser was utilized to produce plasma
by ablation of solid targets. Radiation wavelength and pulse duration were 248 nm and 20 ns, respectively. The laser
beam, 70 mJ per pulse, was focused onto different targets in a spot of about 1 mm 2 in surface, obtaining an irradiance
325
WEPCH179
WEPCH180
WEPCH181