Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2014, Vol. 25 ›› Issue (4): 040101 doi: 10.13538/j.1001-8042/nst.25.040101

• SYNCHROTRON RADIATION TECHNOLOGY AND APPLICATIONS •     Next Articles

Simulation studies on two-frequency RF gun

LI Da, FANG Wen-Cheng, GU Qiang, WANG Zhen, ZHANG Meng, TAN Jian-Hao, WANG Chao-Peng, ZHAO Zhen-Tang    

  1. 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2University of Chinese Academy of Sciences, Beijing 100039, China
  • Contact: ZHAO Zhen-Tang E-mail:zhaozhentang@sinap.ac.cn
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LI Da, FANG Wen-Cheng, GU Qiang, WANG Zhen, ZHANG Meng, TAN Jian-Hao, WANG Chao-Peng, ZHAO Zhen-Tang . Simulation studies on two-frequency RF gun.Nuclear Science and Techniques, 2014, 25(4): 040101     doi: 10.13538/j.1001-8042/nst.25.040101

Abstract:

Photocathode RF gun is widely used for particle accelerators as an electron source. When driving an RF electron gun at the fundamental frequency and a higher harmonic frequency simultaneously with proper field ratio and relative phase, it generates electron beams of ultralow emittance and a linear longitudinal phase space distribution. Such a gun provides high quality electron beam with low energy spread, small traverse emittance and high brightness. In this paper, the RF design of a 1.5 cell cavity is presented. Simulation results of beam dynamics for the two-frequency gun and a standard single-frequency RF gun are also shown in this paper. In addition, bunch compression with a two-frequency gun is explored.

Key words: RF gun, Two-frequency, Traverse emittance, Emittance compensation, Energy spread, Bunch compression