DocumentCode :
1899303
Title :
Stability conditions for a neutralised electron cooling beam
Author :
Bosser, J. ; Maury, S. ; Möhl, D. ; Varenne, F. ; Meshkov, I. ; Syresin, E. ; Mustafin, E. ; Zenkevich, P.
Author_Institution :
CERN, Geneva, Switzerland
Volume :
5
fYear :
1995
fDate :
1-5 May 1995
Firstpage :
2940
Abstract :
Charge neutralisation of the cooling electron beam, e.g. by stationary ions produced from the residual gas, is desirable to compensate the space-charge induced velocity spread which tends to reduce the cooling force. However, it has been demonstrated by Parkhomchuk and collaborators (1993) that two-stream instabilities, especially transverse dipole modes, are a serious threat to the stability. In the present report we analyse stabilising mechanisms including Landau damping, external feedback and clearing of reflected electrons. Experimental results at LEAR (the Low Energy Antiproton Ring at CERN) are discussed in a companion paper at this conference
Keywords :
beam handling techniques; particle beam stability; space charge; LEAR; Landau damping; Low Energy Antiproton Ring; charge neutralisation; cooling force; external feedback; neutralised electron cooling beam; reflected electrons clearing; residual gas; space-charge induced velocity spread; stationary ions; transverse dipole modes; two-stream instabilities; Collaboration; Cooling; Damping; Electron beams; Electron traps; Equations; Feedback; Frequency; Message-oriented middleware; Stability;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
Type :
conf
DOI :
10.1109/PAC.1995.505744
Filename :
505744
Link To Document :
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