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TY - CONF AU - Gevorkyan, G.S. AU - Bazarov, I.V. AU - Cultrera, L. AU - Galdi, A. AU - Karkare, S.S. AU - Li, W.H. AU - Maxson, J.M. ED - Yamazaki, Yoshishige ED - Raubenheimer, Tor ED - McCausey, Amy ED - Schaa, Volker RW TI - Design of a 200 kV DC Cryocooled Photoemission Gun for Photocathode Investigations J2 - Proc. of NAPAC2019, Lansing, MI, USA, 01-06 September 2019 CY - Lansing, MI, USA T2 - North American Particle Accelerator Conference T3 - 4 LA - english AB - Intrinsic emittance of photocathodes limits the brightness of electrons beams produced from photoemission guns. Recent advancements have shown that an order of magnitude improvement in intrinsic emittance over the commonly used polycrystalline metal and semiconductor cathodes is possible via use of single crystalline ordered surfaces of metals, semiconductors and other exotic materials at cryogenic temperatures as cathodes. However, due to practical design considerations, it is not trivial to test such cathodes in existing electron guns. Here we present the design of a 200kV DC electron gun being developed at the Arizona State University for this purpose. PB - JACoW Publishing CP - Geneva, Switzerland SP - 136 EP - 139 KW - cathode KW - gun KW - electron KW - emittance KW - radiation DA - 2019/10 PY - 2019 SN - 2673-7000 SN - 978-3-95450-223-3 DO - doi:10.18429/JACoW-NAPAC2019-MOPLM16 UR - http://jacow.org/napac2019/papers/moplm16.pdf ER -