Fusion Neutron Flux Detector for the ITER

Two fission chambers with different amounts of fissile material （enriched 90% uranium-235） have been manufactured for neutron flux detection in a thermonuclear fusion device. The characteristics of neutron signal and its discrimination from other signals, and a plateau of high voltage between the an...

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Bibliographic Details
Published in:Plasma science & technology 2014-02, Vol.16 (2), p.168-171
Main Author: 袁国梁 杨青巍 杨进蔚 宋先瑛 李旭 吴华剑 王志强
Format: Article
Language:English
Subjects:
Accelerators
Chambers
Devices
Enrichment
Fission
High voltages
Neutron flux
Thermal neutrons
Thermonuclear fusion
中子源
中子通量
国际热核实验堆
核聚变装置
测定仪
能量响应
裂变室
裂变材料
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Summary:Two fission chambers with different amounts of fissile material （enriched 90% uranium-235） have been manufactured for neutron flux detection in a thermonuclear fusion device. The characteristics of neutron signal and its discrimination from other signals, and a plateau of high voltage between the anode and cathode have been validated in a thermal neutron source. The energy responses of the two fission chambers at seven energy levels have been calibrated in an accelerator fast neutron source and the results agree well with the simulations.
ISSN:1009-0630
DOI:10.1088/1009-0630/16/2/14