The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Rahman, O.H. AU - Ackeret, M.A. AU - Ben-Zvi, I. AU - Degen, C. AU - Dobrin, E. AU - Gassner, D.M. AU - Lambiase, R.F. AU - Miller, R.C. AU - Pietz, J.R. AU - Pikin, A.I. AU - Rao, T. AU - Sheehy, B. AU - Skaritka, J. AU - Thompson, K.A. AU - Wang, E. AU - Yeckel, C. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - Cathode Performance during Two Beam Operation of the High Current High Polarization Electron Gun for eRHIC J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - 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. PB - JACoW CP - Geneva, Switzerland SP - 2720 EP - 2722 KW - cathode KW - gun KW - electron KW - vacuum KW - operation DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-WEPJE023 UR - http://jacow.org/ipac2015/papers/wepje023.pdf ER -