Open AccessEXPERIMENTAL STUDY ON ECRH TRAPPED ELECTRON BEAM INJECTED INTO THE SIMPLE MIRROR
Author(s) -
Jun Zhang,
Wang Enyao,
Guan Weishu,
Cheng Shi-Qing,
Duan Shuyun,
Gu B,
Shang Zhenkui
Publication year - 1990
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.39.115-2
Subject(s) - gyrotron , diamagnetism , cathode ray , atomic physics , beam (structure) , microwave , magnetic mirror , electron , materials science , plasma , electron cyclotron resonance , optics , electron cooling , physics , nuclear magnetic resonance , magnetic field , nuclear physics , quantum mechanics
The experiments on ECRH trapped electron beam injection in various ways have been carried out on a simple mirror-MM-2 device by use of a 15GHz high power gyrotron. The experimental results show that the preionization time of plasma will be greatly reduced for the electron beam injection ahead of the microwave. And because of ECRH trapped electron beam, the parameters of hot electron ring will be improved greatly, and the diamagnetic value increases about 62 percent. The trapping efficiency of electron beam for the increasing rate of diamagnetic is about 30-40 percent. The gas "pressure window" for building a hot electron ring is (4.67-21.3)×10-4 Pa, as the gyrotron output power is about 30kW.