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Phys. Rev. ST Accel. Beams 7, 024402 (2004) [7 pages]

Buildup of electron cloud in the PEP-II particle accelerator in the presence of a solenoid field and with different bunch pattern

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Y. Cai * and M. Pivi †
Stanford Linear Accelerator Center, Stanford University, 2575 Sand Hill Road, Menlo Park, California 94025, USA

M. A. Furman ‡
Center for Beam Physics, Accelerator and Fusion Research Division, Lawrence Berkeley National Laboratory, MS 71-259, Berkeley, California 94720, USA

Received 10 September 2003; published 18 February 2004

We have augmented the code posinst to include solenoid fields and used it to simulate the buildup of electron cloud due in the PEP-II positron ring. We find that the distribution of electrons is strongly affected by the resonances associated with the cyclotron period and bunch spacing. In addition, we discover a threshold beyond which the electron density grows exponentially until it reaches the space charge limit. The threshold does not depend on the bunch spacing but does depend on the positron bunch population.


©2004 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevSTAB.7.024402
DOI: 10.1103/PhysRevSTAB.7.024402
PACS: 29.27.Bd, 79.20.Hx, 29.20.Dh

* Electronic address: yunhai@slac.stanford.edu
† Electronic address: mpivi@slac.stanford.edu
‡ Electronic address: mafurman@lbl.gov

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