Open AccessAnalysis and design of a double-anode magnetron injection gun for 1THz gyrotron
Author(s) -
Xulin Chen,
Qing Zhao,
Jianwei Liu,
Li Zheng
Publication year - 2012
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.61.074104
Subject(s) - gyrotron , physics , anode , electron gun , cavity magnetron , optics , cathode ray , beam (structure) , electron , nuclear physics , electrode , quantum mechanics , thin film , sputtering
Based on the electron optics theory, through a massive numerical calculation by programming, a double-anode magnetron injection gun (MIG) for a 1THz gyrotron is designed. The method of calculation and design of MIG is expounded, and the problem that high magnetic compression ratio in THz gyrotron(compression ratio of 125 in electron gun for 1THz gyrotron in this paper)could lead to the reversal of direction of electron flow is also detailedly analyzed and simulated. Through simulation and optimization, an MIG with a modest velocity ratio of the beam (=1.3) and a low velocity spread (8%) is designed.