Abstracts Brochure - CERN

WEPCH — Poster Session 28-Jun-06 16:00 - 18:00
energy ranges of 48-250 MeV for protons and 88-430 MeV/u for carbon ions. The extraction time will be up to 10s
with intensities well beyond the needs of scanning beam applications. We will describe the layout of such a system
and present details on some of the subsystems.
*Particle Therapy is a work in progress and requires country-specific regulatory approval prior to clinical use.
A Novel Proton and Light Ion Synchrotron for Particle Therapy
A compact and simple synchrotron for a
cancer particle therapy system has been
designed and is presently under construction.
A lattice with six regular superperiods,
S.P. Møller, T.A. Andersen, N. Hauge, L.H. Helmersen, T. Holst, I.
Jensen (Danfysik A/S) K. Blasche, B. Franczak (GSI)
twelve dipole and twelve quadrupole magnets, is used. The optimized lattice configuration, including the design of
injection and extraction systems, provides large transverse phase space acceptance with minimum magnet apertures.
The result is a synchrotron for PT with light magnets (5t dipoles), low values of peak power for pulsed operation
and minimum dc power consumption. In addition, industrial production principles are used, keeping ease of construction,
installation, and operation in mind. The beam, injected at 7 MeV/amu, can be accelerated to the maximum
magnetic rigidity of 6.6 Tm in less than 1 s. A beam of 48-250 MeV protons and 88-430 MeV/u carbon ions can be
slowly extracted during up to 10s. The intensity for protons and carbon ions will be well beyond the needs of scanning
beam applications. The design and performance specifications of the synchrotron will be described in detail.
The FFAG Research and Medical Application Project RACCAM
The RACCAM project (Recherche en AC-
Celerateurs et Applications Medicales) has
recently obtained fundings, extending over
three years (2006-2008), from the French Na-
F. Meot (CEA) J. Balosso (New Affiliation Request Pending) E.
Froidefond (LPSC) D. Neuveglise (SIGMAPHI)
tional Research Agency (ANR). RACCAM is a tripartite collaboration, involving (i) the CNRS Laboratory IN2P3/
LPSC, (ii) the French magnet industrial SIGMAPHI, and (iii) the nuclear medecine Departement of Grenoble Hospital.
The project concerns fixed field alternating gradient accelerator (FFAG) research on the one hand, and on the other
hand their application as hadrontherapy and biology research machines. RACCAM’s goal is three-fold, (i) participate
to the on-going international collaborations in the field of FFAGs and recent concepts of "non-scaling" FFAGs, with
frames for instance, the Neutrino Factory (NuFact) and the EMMA project of an electron model of a muon FFAG
accelerator, (ii) design, build and experiment a prototype of an FFAG magnet proper to fulfil the requirements of
rapid cycling acceleration, (iii) develop the concepts, and show the feasibility, of the application of such FFAG beams
to hadrontherapy and to biology research.
*CEA/DAPNIA and IN2P3/LPSC **IN2P3/LPSC ***Grenoble University Hospital ****SIGMAPHI
Magnet Simulations for Medical FFAG
Studies have been undertaken concerning
magnet design in the frame of the RACCAM E. Froidefond (LPSC)
FFAG project (this conference). This contribution
reports on the objectives of the project in that matter, on the working methods and calculation tools developments,
magnetic field modeling and simulations, and on the present status of this work.
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