Abstracts Brochure - CERN

TUPLS — Poster Session 27-Jun-06 16:00 - 18:00
Design Studies of the Compact Superconducting Cyclotron for Hadron Therapy
An overview of the current status of the
design of the compact superconducting
isochronous cyclotron C400 able to deliver
ion beams with a charge to mass ratio of 0.5
is given. This cyclotron is based on the design
of the current PT (proton therapy) C230
Y. Jongen, W. Beeckman, W.J.G.M. Kleeven, D. Vandeplassche, S.E.
Zaremba (IBA) V. Aleksandrov, G.A. Karamysheva, Yu. Kazarinov,
I.N. Kian, S.A. Kostromin, N.A. Morozov, E. Samsonov, V. Shevtsov,
G. Shirkov, E. Syresin (JINR)
cyclotron and will be used for radiotherapy with proton, helium or carbon ions. 12C 6+ and 4He 2+ ions will be accelerated
to 400 MeV/u energy and extracted by electrostatic deflector, H 2+ ions will be accelerated to the energy 260MeV
and extracted by stripping. Computer modeling results on the axial injection system, magnetic system, inflector and
center design are given. Results of simulations of the ion beam injection, acceleration and extraction are presented.
Fixed Field Alternating Gradient Accelerators (FFAG) for Hadron Cancer Therapy
Non-scaling FFAG rings for cancer hadron
therapy offer reduced physical aperture and E. Keil (CERN) A. Sessler (LBNL) D. Trbojevic (BNL)
large dynamic aperture as compared with
scaling FFAGs. The variation of tune with energy implies the crossing of resonances during acceleration. Our
design avoids intrinsic resonances, although imperfection resonances must still be crossed. We consider a system of
three non-scaling FFAG rings for cancer therapy with 250 MeV protons and 400 MeV/u carbon ions. Hadrons are
accelerated in a common RFQ and linear accelerator, and injected into the FFAG rings at v/c=0.1128. The H + /C6+ ions
are accelerated in the two smaller/larger rings to 31 and 250 MeV/52.5 and 400 MeV/u kinetic energy, respectively.
The lattices consist of symmetrical triplet cells with a straight section for RF cavities. The gantry with similar triplet
cells accepts the whole required momentum range at fixed field. This unique design uses either High Temperature
super-conductors or super-conducting magnets reducing gantry size and weight. Elements with a variable field at
the beginning and at the end set the extracted beam at the correct position for the specific energy and adapt the beam
to specific requirements during treatment.
The Proposed 2 MeV Electron Cooler for COSY-Juelich
The design, construction and installation of
a 2 MeV electron cooling system for COSY- J. Dietrich (FZJ) V.V. Parkhomchuk (BINP SB RAS)
Juelich is proposed to further boost the luminosity
even with strong heating effects of high-density internal targets. In addition the design of the 2 MeV electron
cooler for COSY is intended to test some new features of the high energy electron cooler for HESR at FAIR/GSI.
The design of the 2 MeV electron cooler will be accomplished in cooperation with the Budker Institute of Nuclear
Physics in Novosibirsk, Russia. Starting with the boundary conditions of the existing electron cooler at COSY the
requirements and a first general scheme of the 2 MeV electron cooler are described.
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