中国物理B ›› 1994, Vol. 3 ›› Issue (1): 45-50.doi: 10.1088/1004-423X/3/1/005

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EXPERIMENTAL STUDY ON THE UNIFORMITY OF LARGE AREA INTENSE RELATIVISTIC ELECTRON BEAMS

刘乃泉1, 谢羲1, 刘国治2, 邱爱慈2, 张嘉生2   

  1. (1)Department of Modern Applied Physics, Tsinghua University, Beijing 100084, China; (2)Northwest Institute of Nuclear Technology, Xi'an 710024, China
  • 收稿日期:1992-09-07 出版日期:1994-01-20 发布日期:1994-01-20

EXPERIMENTAL STUDY ON THE UNIFORMITY OF LARGE AREA INTENSE RELATIVISTIC ELECTRON BEAMS

LIU GUO-ZHI (刘国治)a, QIU AI-CI (邱爱慈)a, ZHANG JIA-SHENG (张嘉生)a, LIU NAI-QUAN (刘乃泉)b, XIE XI (谢羲)b   

  1. a Northwest Institute of Nuclear Technology, Xi'an 710024, China; b Department of Modern Applied Physics, Tsinghua University, Beijing 100084, China
  • Received:1992-09-07 Online:1994-01-20 Published:1994-01-20

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摘要： The uniformity of intense relativistic electron beams under a converging magnetic guide field is studied experimentally in this paper. In the experiments, fluence calorimeter and X-ray pinhole photograph were used to measure the beam uniformity. The experimental results show that the externally applied magnetic flux density at the cathode and the shape of cathode face have considerable influence on the beam uniformity, The beam uniformity better than 80% is obtained over an area of 200cm2 when the externally applied magnetic flux density at the cathode is about 0.6T and the cathode face is concave to a depth of 1.5 mm, relative to the cathode edge.

Abstract: The uniformity of intense relativistic electron beams under a converging magnetic guide field is studied experimentally in this paper. In the experiments, fluence calorimeter and X-ray pinhole photograph were used to measure the beam uniformity. The experimental results show that the externally applied magnetic flux density at the cathode and the shape of cathode face have considerable influence on the beam uniformity, The beam uniformity better than 80% is obtained over an area of 200cm2 when the externally applied magnetic flux density at the cathode is about 0.6T and the cathode face is concave to a depth of 1.5 mm, relative to the cathode edge.

中图分类号:  (Relativistic electron and positron beams)

  • 41.75.Ht
52.27.Ny (Relativistic plasmas) 52.35.Qz (Microinstabilities (ion-acoustic, two-stream, loss-cone, beam-plasma, drift, ion- or electron-cyclotron, etc.))