Note: Measurement of the runaway electrons in the J-TEXT tokamak

Journal Article · Tue May 15 00:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4721659· OSTI ID:22072316

Chen, Z Y; Zhang, Y; Zhang, X Q; Luo, Y H; Jin, W; Li, J C; Chen, Z P; Wang, Z J; Yang, Z J; Zhuang, G ^[1]

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1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074 (China)

The runaway electrons have been measured by hard x-ray detectors and soft x-ray array in the J-TEXT tokamak. The hard x-ray radiations in the energy ranges of 0.5-5 MeV are measured by two NaI detectors. The flux of lost runaway electrons can be obtained routinely. The soft x-ray array diagnostics are used to monitor the runaway beam generated in disruptions since the soft x-ray is dominated by the interaction between runaway electrons and metallic impurities inside the plasma. With the aid of soft x-ray array, runaway electron beam has been detected directly during the formation of runaway current plateau following the disruptions.

• OSTI ID: 22072316
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 5 Vol. 83; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRON BEAMS
HARD X RADIATION
MEV RANGE
NAI DETECTORS
PLASMA IMPURITIES
RUNAWAY ELECTRONS
SOFT X RADIATION
TOKAMAK DEVICES
X-RAY DETECTION