Title :
A superconducting Landau accelerator module for Bessy II
Author :
Stein, P. Vom ; Pekeler, M. ; Vogel, H. ; Anders, W. ; Belomestnykh, S. ; Knobloch, Jan ; Padamsee, H.
Author_Institution :
ACCEL Instruments, Bergisch Gladbach, Germany
fDate :
6/23/1905 12:00:00 AM
Abstract :
The installation of a 3rd harmonic Landau accelerator module is planned at BESSY II to improve the beam lifetime. The passive cavity shall provide an accelerating voltage up to 500 kV for beam currents from 10 to 500 mA. A CESR Phase-III cavity [1], scaled to 1.5 GHz, will be used. The cavity design provides strong damping of higher-order modes by ferrite loads on the beam tubes. A new module, constrained to fit into a very limited space at BESSY, is described here. It includes a piezo-electric tuner that allows amplitude control within 1%. Nonstandard modes of operation, such as normal-conducting stand-by operation and thermal breakdown are also discussed
Keywords :
accelerator cavities; electron accelerators; storage rings; superconducting cavity resonators; 1.5 GHz; 10 to 500 mA; 500 kV; BESSY II; CESR Phase-III cavity; beam lifetime; ferrite loads; higher-order modes; passive cavity; piezo-electric tuner; superconducting Landau accelerator module; thermal breakdown; Acceleration; Couplers; Cryogenics; Ferrites; Frequency; Helium; Particle beams; Stability; Tuners; Voltage;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.986618
