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TY - CONF AU - Wang, Y.W. AU - Adderley, P.A. AU - Benesch, J. F. AU - Bullard, D.B. AU - Grames, J.M. AU - Hannon, F.E. AU - Hansknecht, J. AU - Hernandez-Garcia, C. AU - Kazimi, R. AU - Krafft, G.A. AU - Mamun, M.A. AU - Palacios Serrano, G.G. AU - Poelker, M. AU - Suleiman, R. AU - Tiefenback, M.G. AU - Wijethunga, S.A.K. AU - Zhang, S. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - 300 kV DC High Voltage Photogun with Inverted Insulator Geometry and CsK2sb Photocathode J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - A compact DC high voltage photogun with inverted-insulator geometry was designed, built and operated reliably at 300 kV bias voltage using alkali-antimonide photocathodes. This presentation describes key electrostatic design features of the photogun with accompanying emittance measurements obtained across the entire photocathode surface that speak to field non-uniformity within the cathode/anode gap. A summary of initial photocathode lifetime measurements at beam currents up to 4.5 mA is also presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 4571 EP - 4574 KW - cathode KW - gun KW - high-voltage KW - emittance KW - laser DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-THPMK110 UR - http://jacow.org/ipac2018/papers/thpmk110.pdf ER -