Title :
Superconducting RF control issues at CESR
Author :
Belomestnykh, S. ; Henderson, S. ; Kaplan, R.
Author_Institution :
Lab. of Nucl. Studies, Cornell Univ., Ithaca, NY, USA
Abstract :
RF controls of the superconducting cavities have to deal with an extremely heavy beam loading in CESR. A feature of the CESR RF system operation is that superconducting cavities are under-coupled at high beam currents. This means that the RF system operates very close to Robinson stability limit. Analysis of the steady-state stability of the CESR RF system and the results of measurements with beam are presented. Two more SRF cavities will be installed in CESR for short bunch operation. This will tighten tolerances to RF signal regulation errors. New control electronics is under development to meet the challenge
Keywords :
accelerator RF systems; accelerator control systems; colliding beam accelerators; electron accelerators; storage rings; CESR RF system operation; Robinson stability limit; SRF cavities; heavy beam loading; short bunch operation; superconducting cavities; Colliding beam devices; Control systems; Laboratories; Particle beams; Radio frequency; Resonance; Stability analysis; Steady-state; Virtual colonoscopy; Voltage control;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.986579
