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TY - CONF AU - Kroh, T. AU - Aßmann, R.W. AU - Demirbas, U. AU - Dinter, H. AU - Fakhari, M. AU - Hemmer, M. AU - Kellermeier, M.J. AU - Kärtner, F.X. AU - Matlis, N.H. AU - Pergament, M. AU - Rohwer, T. AU - Çankaya, H. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Compact Terahertz-Powered Electron Photo-Gun J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - Novel accelerator concepts such as all-optical THz based compact accelerators promise to enable new science due to unique features such as reduced timing-jitter and improved space-charge broadening of the generated electron bunches. However, multi-keV electron photo-guns based on short single-cycle THz pulses for acceleration have not been demonstrated experimentally so far. Here, we present a modular THz-driven electron gun with both tunable interaction length and output orifice allowing optimization of the sub-mm interaction volume. First extraction of multi-keV electrons is demonstrated and the parameter space as well as resulting performance of the THz-driven gun by varying the timing of the two single-cycle THz pulses and the UV photo-excitation pulse are explored. Such compact gun prototypes are not only promising as injectors for compact THz-based LINACs but also as source for ultrafast electron diffraction experiments. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2983 EP - 2985 KW - electron KW - gun KW - cathode KW - injection KW - acceleration DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-WEPAB158 UR - https://jacow.org/ipac2021/papers/wepab158.pdf ER -