The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Xiao, O. AU - Li, X.P. AU - Sun, D.R. AU - Wang, X. AU - Zhang, J.R. ED - Schaa, Volker RW ED - Ji, Daheng ED - Li, Lu ED - Zhao, Ning TI - Bunch Length Measurement System for 500 kV Photocathode DC Gun at IHEP J2 - Proc. of SAP2017, Jishou, China, 28-30 August 2017 C1 - Jishou, China T2 - Symposium on Accelerator Physics T3 - 13 LA - english AB - In September of 2011, a 500 kV photocathode DC gun was proposed for FEL-ERL two purpose facility at Insti-tute of High Energy Physics(IHEP). So far, the whole system has been installed and the preliminary high voltage conditioning has been carried out. Since the photocathode response time influence the beam quality, the bunch length measurement system is required, which consist of a solenoid, a 1.3 GHz standing wave deflecting cavity, a slit and a YAG screen. In this paper, the design of a deflecting cavity with TM210 mode is presented. In addition, the beam dynamics study of the bunch measurement system is performed using ASTRA and the layout of the bunch measurement system is determined. The bunch length in simulation is in good agreement with theoretical calculation. PB - JACoW CP - Geneva, Switzerland SP - 172 EP - 175 KW - ion KW - cavity KW - cathode KW - gun KW - electron DA - 2018/02 PY - 2018 SN - 978-3-95450-199-1 DO - 10.18429/JACoW-SAP2017-WEAH4 UR - http://jacow.org/sap2017/papers/weah4.pdf ER -