The rf-system for SUSE

The RF-System for SuSe consists of two large cavities in opposite valleys. The cavities are driven in the TE 101-mode and have a radial increasing voltage distribution. The maximum accelerating voltage per cavity is 1 MV at a power consumption of about 170 kW. A frequency variability in the range between 59 MHz and 74 MHz is possible in reducing the gap between the capacitively loaded lips, the fine tuning is done with two cylindrical perturbing objects. The cavities were optimized with the aid of the recently developed three dimensional cavity calculation program CAV3D and measurements on several models in the scale 1:5, 1:8 and 1:2.5. A full scale power model is in construction. It will be tested with existing facilities at the Munich tandem laboratory, the large vacuum chamber HEXE and the RF power-generator for the post-accelerator SchweIN. A later application of this test cavity as part of a mass-separator is under consideration