Title :
RF control system for the SC cavity of the TESLA Test Facility injector
Author :
Mosnier, A. ; Chel, S. ; Ngoc, B. Phung ; Tessier, J.M.
Author_Institution :
CEA, Centre d´´Etudes Nucleaires de Saclay, Gif-sur-Yvette, France
Abstract :
The superconducting cavity of the TTF injector, which operates in pulsed mode, must accelerate the non relativistic electron beam to an energy of 10 to 15 MeV. Lorentz forces and microphonics detunings are the major sources of cavity field fluctuation. In order to achieve amplitude and phase stabilities much smaller than 10-3 and 1 degree, an analog feedback system, mainly based on a self excited loop and I/Q modulators, has been developed. After a description of the RF control module, various measurements without and with beam are reported
Keywords :
accelerator RF systems; accelerator cavities; accelerator control systems; booster injectors; electron accelerators; linear accelerators; superconducting cavity resonators; 10 to 15 MeV; I/Q modulators; Lorentz forces; RF control module; RF control system; TESLA Test Facility injector; amplitude stabilities; analog feedback system; cavity field fluctuation; microphonics detunings; nonrelativistic electron beam; phase stabilities; pulsed mode; self excited loop; superconducting cavity; Acceleration; Amplitude modulation; Control systems; Electron beams; Feedback loop; Fluctuations; Phase modulation; Radio frequency; Stability; Test facilities;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.751192
