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TY - CONF AU - Wisniewski, E.E. AU - Antipov, S.P. AU - Conde, M.E. AU - Doran, D.S. AU - Gai, W. AU - Jing, C.-J. AU - Liu, W. AU - Power, J.G. AU - Whiteford, C. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - Cs2Te Photocathode Performance in the AWA High-charge High-gradient Drive Gun 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 - The unique high-charge L-band, 1.3 GHz, 1.5 cell gun for the new 75 MeV drive beam is in operation at the Argonne Wakefield Accelerator (AWA) facility (see M.E. Conde, this proceedings.) The high-field (> 80 MV/m) photoinjector has a large area, high QE Cesium telluride photocathode (diameter > 30 mm). The photocathode, a crucial component of the upgraded facility, is fabricated on-site. The photoinjector generates high-charge, short pulse, single bunches (Q > 100 nC) and long bunch-trains (Q > 600 nC) for wakefield experiments. The performance of the photocathode for the AWA drive gun is detailed. Quantum efficiency (QE) measurements indicate long, stable photocathode lifetime under demanding conditions. PB - JACoW CP - Geneva, Switzerland SP - 3283 EP - 3285 KW - laser KW - cathode KW - gun KW - wakefield KW - space-charge DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-WEPTY013 UR - http://jacow.org/ipac2015/papers/wepty013.pdf ER -