286 research outputs found
Design of the 7 MeV/u, 217 MHz Injector Linac for the Proposed Ion Beam Facility for Cancer Therapy at the Clinic in Heidelberg
A dedicated clinical synchrotron facility for cancer therapy using energetic
proton and ion beams (C, He and O) has been designed at GSI for the
Radiologische Universitaetsklinik at Heidelberg, Germany. The design of the
injector linac is presented. Suitable ion sources are discussed and results of
ion source test measurements are reported. The LEBT allows for switching
between two ion sources. A short RFQ accelerates the ions from 8 keV/u to 400
keV/u. It is followed by a very compact beam matching section and a 3.8 m long
IH-type drift tube linac for the acceleration to 7 MeV/u. Both rf structures
are designed for a resonance frequency of 216.816 MHz and for ion
mass-to-charge ratios up to A/q = 3 (12C4+, (H_3)+, 3He+, 16O6+).Comment: Contribution to the LINAC2000 Proceedings, Paper ID: MOD1
Cold Power Tests of the sc 325 MHz CH-Cavity
At the Institute for Applied Physics (IAP), Frankfurt University, a superconducting 325 MHz CH-Cavity has been designed, built and first tests have successfully been performed. The cavity is determined for a 11.4 AMeV, 10 mA ion beam at the GSI UNILAC. Consisting of 7 gaps this resonator is envisaged to deliver a gradient of 5 MV/m. Novel features of this structure are a compact design, low peak fields, improved surface processing and power coupling. Furthermore a tuner system based on bellow tuners driven by a stepping motor and a piezo actuator and attached inside the resonator will control the frequency. In this contribution measurements executed at 4 K and 2 K at the cryo lab in Frankfurt will be presented
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