Title :
Operational aspects of electron cooling at the low energy antiproton ring (LEAR)
Author :
Bosser, J. ; Chanel, M. ; Ley, R. ; Möhl, D. ; Perrier, J.C. ; Tranquille, G. ; Williams, D.J.
Author_Institution :
CERN, Geneva, Switzerland
Abstract :
The major modifications made to the LEAR (Low Energy Antiproton Ring) electron cooler for its reliable and effective use in everyday operations are described. The transverse feedback system used to counteract the coherent instabilities observed with the dense beams obtained with electron cooling is also discussed. Experience gained while using the cooler in a semi-operational manner has made it possible to redesign the critical components. Supplemented by the active feedback system, electron cooling can now be used consistently between decelerating ramps to obtain beams of ultralow momenta with an appreciable gain in duty cycle and beam quality as compared to previous modes of operation.<>
Keywords :
beam handling techniques; proton accelerators; storage rings; LEAR; active feedback system; beam quality; coherent instabilities; critical components; decelerating ramps; dense beams; duty cycle; electron cooling; low energy antiproton ring; major modifications; semi-operational manner; transverse feedback system; ultralow momenta; Circuit stability; Coils; Cooling; Electron beams; Ion beams; Optical losses; Testing; Toroidal magnetic fields; Valves; Voltage;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.165118
