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TY - CONF AU - Wu, D. AU - Lao, C.L. AU - Li, M. AU - Li, P. AU - Li, X. AU - Lin, S.F. AU - Luo, X. AU - Pan, Q. AU - Shan, L.J. AU - Wang, H. AU - Wang, J. AU - Xiao, D.X. AU - Yang, X. AU - Zhou, K. ED - Schaa, Volker RW ED - Ji, Daheng ED - Li, Lu ED - Zhao, Ning TI - Beam Optimization and Measurment of CAEP FEL-THz Injector J2 - Proc. of SAP2017, Jishou, China, 28-30 August 2017 C1 - Jishou, China T2 - Symposium on Accelerator Physics T3 - 13 LA - english AB - The FEL-THz facility in Chinese Academy of Engineering Physics (CAEP) requires high brightness high repetition electron beam, which needs optimization of multi-parameter and multi-objective, such as emittance, energy spread, bunch length, etc. In this paper, some studies of beam optimization based on differential evolution (DE) algorithm and Astra code are shown. Dozens of the DC-SRF-injector parameters have been considered in the optimization. Some measurements of the electron beam are also introduced, including emittance measurement with the three-profile method, energy spread measurement with analyzing magnet and beam length diagnostics with zero-phasing method. These studies indicate that the injector beam quality satisfies the requirement of the FEL-THz facility. PB - JACoW CP - Geneva, Switzerland SP - 179 EP - 182 KW - ion KW - electron KW - emittance KW - FEL KW - brightness DA - 2018/02 PY - 2018 SN - 978-3-95450-199-1 DO - 10.18429/JACoW-SAP2017-WEBH4 UR - http://jacow.org/sap2017/papers/webh4.pdf ER -