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Design of a high current density cylindrical electron optics system

Sun Fu-Yu Wu Zhen-Hua Zhang Kai-Chun

Design of a high current density cylindrical electron optics system

Sun Fu-Yu, Wu Zhen-Hua, Zhang Kai-Chun
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  • Abstract views:  3577
  • PDF Downloads:  958
  • Cited By: 0
Publishing process
  • Received Date:  03 May 2009
  • Accepted Date:  07 July 2009
  • Published Online:  15 March 2010

Design of a high current density cylindrical electron optics system

  • 1. 电子科技大学物理电子学院太赫兹研究中心,成都 610054

Abstract: A high current density cylindrical electron optics system is designed for extended interaction oscillator, including the design of electron gun and focusing magnetic field. To obtain good beam properties, a theory of ideal circular beam focusing is used in design. The focusing magnetic field is calculated by balancing the radial forces. CST PARTICLE STUDIO simulation under space-charge-limited emission model shows good beam qualities with a parallel beam flow throughout the gun and interaction sections. The simulation result is in good agreement with design theory, the beam mean current density attains 244 A/cm2, fill factor 767%, beam transmission 100%.

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