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TY - CONF AU - Dehn, M.A. AU - Aulenbacher, K. AU - Bechthold, V. ED - Petit-Jean-Genaz, Christine ED - Kim, Dong Eon ED - Kim, Kyung Sook ED - Ko, In Soo ED - Schaa, Volker RW TI - Pulse Response Measurements of NEA Photocathodes at Different Laser Wavelengths J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - For high average electron beam currents the length of the electron bunches must match the acceptance of the accelerator. At Johannes Gutenberg-University Mainz we are able to measure the longitudinal pulse response of NEA photocathodes (GaAs) under photo excitation of different wavelengths. A time resolution of < 2 ps at a beam energy of 100 keV is achieved, furthermore, a high dynamic range allows to investigate long ranging tails of the response (longitudinal halo). This serves to identify the best possible operation mode for high current photo sources. PB - JACoW CP - Geneva, Switzerland SP - 3931 EP - 3933 KW - laser KW - electron KW - cavity KW - photon KW - cathode DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-THPOW004 UR - http://jacow.org/ipac2016/papers/thpow004.pdf ER -