Title :
4 rod RFQ injectors for the GSI linac
Author_Institution :
Inst. fuer Angewandte Phys., J.W. Goethe Univ., Frankfurt, West Germany
Abstract :
A four-rod RFQ (radio-frequency quadrupole) is being built as a part of the new high charge state injector for the UNILAC at GSI Darmstadt. It will accelerate heavy ions from an ECR (electron cyclotron resonance) ion source with charge-to-mass ratio of q/u⩾0.117 (U28+) from 2.5 keV/u to 300 keV/u, which corresponds to an energy gain of 2.5 MeV/q. The four-rod RFQ will be 2.9 m long with a tank diameter of 35 cm and will operate at 108.5 MHz with a duty cycle of up to 50%. The status of the project and first results are presented. In addition, work on a high-current prototype accelerator designed for U2+ (25 emA), 2.5 to 25 keV/u, and an operating frequency of 27 MHz is reported
Keywords :
ion sources; linear accelerators; 108.5 MHz; 27 MHz; ECR; GSI linac; RFQ injectors; U2+; U28+; UNILAC; charge-to-mass ratio; duty cycle; electron cyclotron resonance source; energy gain; four-rod radiofrequency quadrupole injector; heavy ions; high charge state injector; high-current prototype accelerator; operating frequency; tank diameter; Acceleration; Frequency; Ion accelerators; Ion sources; Linear particle accelerator; Prototypes; Space charge; Storage rings; Synchrotrons; Time sharing computer systems;
Conference_Titel :
Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/PAC.1989.73364
