Commissioning the photocathode radio frequency gun:a candidate electron source for Hefei Advanced Light Facility  

作　　者：Wen-Xing Wang Cheng Li Zhi-Gang He Shan-Cai Zhang Rui-Xuan Huang Wei-Wei Li Ping Lu Chuan Li Lei-Lei Tang Feng-Lei Shang Fang-Fang Wu Da-Chun Jia Hai-Yan Zhang Wei Wang 

机构地区：[1]National Synchrotron Radiation Laboratory,University of Science and Technology of China,Hefei 230029,China

出　　处：《Nuclear Science and Techniques》2022年第3期1-9,共9页核技术（英文）

基　　金：supported by Hefei Advanced Light Facility R&D project and the National Natural Science Foundation of China (No.11775216)

摘　　要：The Hefei Advanced Light Facility(HALF)proposed by the National Synchrotron Radiation Laboratory(NSRL)is a diffraction-limited storage ring(DLSR),which plans to use a full energy linac as the injector.To ensure injection efficiency,the injection beam needs to have low emittance.Therefore,a photocathode radio frequency(RF)gun was developed in the HALF R&D project.The gun is designed to deliver high-quality electron bunches with a typically 0.5 nC charge and~4.5 MeV energy with low emittance.The initial system commission with an electron beam was completed at the end of 2020,and a stable 1.2–1.4 mm.mrad emittance with a bunch charge of 500 pC was demonstrated.In this paper,we report the experimental results and experience obtained during the commission,including the RF gun,drive laser system,and beam diagnostics.

关 键 词：High-brightness electron beam Photoinjector laser shaping Transverse emittance 

分 类 号：TL594[核科学技术—核技术及应用]