Study of an instability of the PEP-II positron beam (Ohmi effect and multipactoring)

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The paper is organized in the following way. First, Ohmi effect induced by direct flow of primary photoelectrons is studied for the PEP-II parameters. The production rate and kinematics take into account the antechamber of the LER. We discuss the effect of the secondary emission of electrons in the AL chamber, where the yield is larger than one. Resonance multipactoring is considered, and then the average density of the secondary electrons is estimated taking into account the space-charge effect and the interaction with the beam. We show that in the extreme case there is a self-consistent regime similar to the ... continued below

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14 p.

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Heifets, S.A. November 1, 1995.

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Description

The paper is organized in the following way. First, Ohmi effect induced by direct flow of primary photoelectrons is studied for the PEP-II parameters. The production rate and kinematics take into account the antechamber of the LER. We discuss the effect of the secondary emission of electrons in the AL chamber, where the yield is larger than one. Resonance multipactoring is considered, and then the average density of the secondary electrons is estimated taking into account the space-charge effect and the interaction with the beam. We show that in the extreme case there is a self-consistent regime similar to the regime of the space-charge dominated cathode. Finally, the rate of ion production by accumulated electrons and the possibility of the ion induced pressure instability is discussed.

Physical Description

14 p.

Notes

INIS; OSTI as DE96003117

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  • CEIBA95: international workshop on collective effects and impedance for B-factories, Tsukuba (Japan), 12-17 Jun 1995

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  • Other: DE96003117
  • Report No.: SLAC-PUB--95-6956
  • Report No.: CONF-9506279--3
  • Grant Number: AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 162185
  • Archival Resource Key: ark:/67531/metadc622803

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  • November 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Feb. 2, 2016, 6:09 p.m.

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Heifets, S.A. Study of an instability of the PEP-II positron beam (Ohmi effect and multipactoring), article, November 1, 1995; Menlo Park, California. (digital.library.unt.edu/ark:/67531/metadc622803/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.