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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 3: Particle Sources

AKBP 3.5: Talk

Tuesday, March 21, 2017, 16:00–16:15, MOL 213

NEA activation and cleaning studies on GaAs photocathodes — •Neeraj Kurichiyanil, Joachim Enders, Martin Espig, Yuliya Fritzsche, and Markus Wagner — Institut für Kernphysik, Technische Universität Darmstadt, Germany.

A test facility for photocathode activation, test and cleaning using atomic-hydrogen (Photo-CATCH) has been constructed at the Institute für Kernphysik (IKP) of TU Darmstadt. Systematic studies of cathode preparation have been conducted using bulk GaAs cathode samples. Different negative electron affinity (NEA) activation methods are investigated and compared and rejuvenation of photocathodes through atomic-hydrogen cleaning has been verified.
Work supported in part by DFG through GRK 2128 and by the BMBF contract 05H15RDRB1.