Abstracts Brochure - 2nd International Particle Accelerator Conference

water flow that circulates through an annular
channel along the outer surface of the cone. The
coolant composition must be defined taking into
account corrosion and erosion phenomena. Also, as
important neutron and gamma fluxes are generated
in the beam stop, the activation of corrosion
products and the water radiolysis must be
considered. During commissioning of the
accelerator, pulsed beams with low duty cycle will
be used and therefore the power will be significantly
lower than the nominal one. With the double aim of
minimizing erosion and of reproducing the full
power margin to local boiling (used as safety
interlock) it is planned to use flows lower than the
nominal one. This work will present the different
operation scenarios and the coolant composition
choice performed.
Sub Classification: T20 Targetry
Poster Panel 120
ID: 3131 - TUPS070
An Experiment at HiRadMat: Irradiation of
High-Z Materials, Juan Blanco, Ruediger Schmidt
(CERN, Geneva), Naeem A. Tahir (GSI, Darmstadt)
- Calculations of the impact of dense high intensity
proton beams at SPS and LHC into material have
been presented in several papers*,**,***. This paper
presents the plans for an experiment to validate the
theoretical results with experimental data. The
experiment will be performed at the High Radiation
to Materials (HiRadMat) facility at the CERN-SPS.
The HiRadMat facility is dedicated to shock beam
impact experiments. It allows testing of accelerator
components with respect to the impact of highintensity
pulsed beams. It will provide a 440 GeV
proton beam with a focal size down to 0.1 mm, thus
providing very dense beam (energy/cross section).
The transversal profile of the beam is considered to
be Gaussian with a tunable sigma from 0.1 mm to 2
mm. This facility will allow to study “high energy
density” physics as the energy density will be high
enough to create strong coupled plasma in the core
of high-Z materials (copper, tungsten) and to
produce strong enough shock waves to create a
density depletion channel along the beam axis
(tunneling effect). The paper introduces the layout of
the experiment and the monitoring system to detect
tunneling of protons through the target.
* N.A.Tahir et al. HB2010 Proc., Morschach,
Switzerland.
** N.A.Tahir et al. NIMA 606(1-2) 2009 186.
*** N.A.Tahir et al. 11th EPAC, Genoa, Italy, 2008,
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Sub Classification: T23 Machine Protection
Poster Panel 121
ID: 4489 - MOPC148
MedAustron Timing System and MRF Timing
Equipment Upgrade, Rok Tavcar, Rok Stefanic,
Igor Verstovsek (Cosylab, Ljubljana) - MedAustron
is a new ion beam therapy and research centre under
construction in Wiener Neustadt, Austria. The
timing system for its synchrotron particle accelerator
is being developed in close collaboration between
MedAustron and Cosylab. We have chosen Micro
Research Finland (MRF) timing equipment as the
transfer layer platform and redesigned the FPGA
firmware on both the master and the receiver in
order to address machine specific requirements
which exceed MRF's original capabilities. Being
involved in MedAustron control system design both
vertically and horizontally has enabled us to create a
timing system transport layer that meets the
demands of this class of compact accelerators
intended for clinical use. We have achieved it while
maintaining generality – the main characteristic of
MRF timing equipment that led to its de-facto
standard status seen today. Added functionalities
include a flexible event response mechanism on the
receiver side and support for virtual accelerators -
concurrently operating accelerator partitions. This
article explains the timing system design overview
with emphasis on its main conceptual specifics
requiring the redesign of MRF firmware.
Sub Classification: T24 Timing and
Synchronization
Poster Panel 122
ID: 2831 - TUPS094
Research of Thermal Deformation on a Compact
Cyclotron CYCHU-10, Kaifeng Liu (HUST,
Wuhan) - Nowadays, a cyclotron CYCHU-10 used
for PET is under construction in Huazhong
University of Science and Technology (HUST) due
to the growing demands in medical applications. For
space-saving and low energy consumption, the
CYCHU-10 was designed compactly and accurately,
especially for the RF cavity consists of the valley of
the magnetic pole and the dee electrodes installed on
the vacuum chamber. The RF system will supply a
10kw power and large part of it will transform into
thermal energy.This paper will introduce the thermal
deformation of the RF cavity and the main vacuum
chamber. Meanwhile the finite elements analysis
thermal deformation with ANSYS Products will be
present.Finally, the cooling system for the RF cavity