Author: Degen, C.
Paper Title Page
WEPJE023 Cathode Performance during Two Beam Operation of the High Current High Polarization Electron Gun for eRHIC 2720
 
  • O.H. Rahman
    Stony Brook University, Stony Brook, USA
  • M.A. Ackeret, J.R. Pietz
    Transfer Engineering and Manufacturing, Inc, Fremont, California, USA
  • I. Ben-Zvi, C. Degen, D.M. Gassner, R.F. Lambiase, A.I. Pikin, T. Rao, B. Sheehy, J. Skaritka, E. Wang
    BNL, Upton, Long Island, New York, USA
  • E. Dobrin, R.C. Miller, K.A. Thompson, C. Yeckel
    Stangenes Industries, Palo Alto, California, USA
 
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
Two electron beams from two activated bulk GaAs photocathodes were successfully combined during the recent beam test of the High Current High Polarization Electron gun for eRHIC. The beam test took place at Stangenes Industries in Palo Alto, CA, where the cathodes were placed in radially opposite locations inside the high voltage shroud. No significant cross talking between the cathodes were found for the pertinent vacuum and low average current operation, which is very promising towards combining multiple beams for higher average current. This paper describes the cathode preparation, transport and cathode performance in the gun for the combining test, including the QE and lifetimes of the photocathodes at various steps of the experiment.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPJE023  
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