DocumentCode :
869450
Title :
Electron Beam Dynamics in the CERN PS
Author :
Baconnier, Y. ; Cappi, R. ; Garoby, R. ; Hardt, W. ; Hübner, K. ; Madsen, J.H.B. ; Riunaud, J.P.
Author_Institution :
CERN, Geneva, Switzerland
Volume :
30
Issue :
4
fYear :
1983
Firstpage :
2613
Lastpage :
2615
Abstract :
The 28 GeV proton synchrotron (PS) forms part of the chain of LEP injectors with the rÿle to accelerate positrons and electrons from 0.6 GeV, the operating energy of the Electron/Positron Accumulator (EPA), to 3.5 GeV, the positron/electron injection energy of CERN´s 400 GeV proton synchrotron (SPS) which then accelerates the particles to 20 GeV. The PS used as an electron synchrotron has to supply the SPS with 8 bunches at an intensity of Nb = 8 × 109 particles per bunch. Bunch length and energy spread must be chosen carefully to avoid transverse and longitudinal single-bunch instabilities (turbulence) associated with high peak currents in the SPS. Analysis of the beam dynamics in the combined function lattice of the PS shows that this requirement can be fulfilled if the damning-partition numbers are changed. A Robinson Wiggler is proposed for this purpose and a new additional RF system is needed to produce the required bunch dimensions in longitudinal phase space.
Keywords :
Acceleration; Electron beams; Lattices; Niobium; Positrons; Protons; Radio frequency; Stability; Synchrotrons; Undulators;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.1983.4332900
Filename :
4332900
Link To Document :
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