Laser and Particle Beams

Research Article

A high repetitive rate intense electron beam accelerator based on high coupling Tesla transformer

Jian-Chang Penga1a2 c1, Guo-Zhi Liua1a2, Xiao-Xin Songa2 and Jian-Cang Sua2

a1 Key Lab of Electronic Physics and Device of Ministry of Education, Xi'an Jiaotong University, Xi'an, China

a2 North-West Institute of Nuclear Technology, Xi'an, China

Abstract

Tesla transformers are widely used in short pulse, repetition pulsed power generators. In this paper, a high repetitive rate intense electron beam accelerator (IEBA) based on high coupling (~1) Tesla transformer, which consists of a primary charging system, coaxial pulse forming line (PFL) charged by Tesla transformer and gas spark switch is described, especially stressed on the high coupling Tesla transformer. By introducing magnetic core to enhance the coupling factor between the primary and secondary windings, the transformer is capable of producing high voltage pulse up to 1.4 MV in approximately 45 µs. A coaxial pulse forming line is closely attached to the transformer that the outer and inner magnetic cores are parts of the PFL's outer and inner conductors respectively. In addition, the parameters of the Tesla transformer and PFL are calculated, including the dimension of the PFL and Tesla transformer. Some experiment results showed that the IEBA is capable of producing electron beams of 300–700 kV/7–13 kA at repetitive rate 100 Hz, with the pulse width 35 ns. The maximal energy efficiency of the Tesla transformer is 83%.

(Received August 27 2010)

(Accepted November 02 2010)

(Online publication January 06 2011)

Keywords

  • Intense electron beam accelerator;
  • Magnetic core;
  • Repetitive rate;
  • Tesla transformer

Correspondence:

c1 Address correspondence and reprint requests to: Jian-Chang Peng, Key Lab of Electronic Physics and Device of Ministry of Education, Xi'an Jiaotong University, P. O. Box, Xianning-road 28, Xi'an, 710049, China. E-mail: jchpeng@yahoo.com.cn