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TY - CONF AU - Qiang, J. AU - Hwang, K. ED - Schaa, Volker RW ED - Power, Maria ED - Shiltsev, Vladimir ED - White, Marion TI - Modeling of Dark Current Generation and Transport Using the IMPACT-T Code J2 - Proc. of NAPAC2016, Chicago, IL, USA, October 9-14, 2016 C1 - Chicago, IL, USA T2 - North American Particle Accelerator Conference T3 - 3 LA - english AB - Dark current from unwanted electrons in photoinjector can present significant danger to the accelerator operation by causing damage to photocathode and power deposition onto conducting wall. In this paper, we present numerical models of dark current generation from the field emission and from the electron impact ionization of the residual gas that were recently developed in the IMPACT-T code. We also report on the application of above numerical model to an LCLS-II like photoinjector. PB - JACoW CP - Geneva, Switzerland SP - 964 EP - 966 KW - ion KW - electron KW - cavity KW - cathode KW - space-charge DA - 2017/01 PY - 2017 SN - 978-3-95450-180-9 DO - 10.18429/JACoW-NAPAC2016-WEPOB29 UR - https://jacow.org/napac2016/papers/wepob29.pdf ER -