Time Dependent DD Neutrons Measurement Using a Single Crystal Chemical Vapor Deposition Diamond Detector on EAST

a single crystal chemical vapor deposition （scCVD） diamond detector has been successfully employed for neutron measurements in the EAST （Experimental Advanced Superconducting Tokamak） plasmas. The seCVD diamond detector coated with a 5 μm 6LiF （95% 6Li enriched） layer was placed inside a polyethylen...

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Published inPlasma science & technology Vol. 18; no. 9; pp. 950 - 953
Main Author 杜腾飞 彭星宇 陈忠靖 胡志猛 葛理健 胡立群 钟国强 普能 陈金象 樊铁栓
Format Journal Article
LanguageEnglish
Published 01.09.2016
Subjects
cvd金刚石
中子测量
化学气相沉积
探测器
时间依赖
晶体
等离子体
超导托卡马克
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Summary:a single crystal chemical vapor deposition （scCVD） diamond detector has been successfully employed for neutron measurements in the EAST （Experimental Advanced Superconducting Tokamak） plasmas. The seCVD diamond detector coated with a 5 μm 6LiF （95% 6Li enriched） layer was placed inside a polyethylene moderator to enhance the detection efficiency. The time-dependent neutron emission from deuteron plasmas during neutral beam injection （NBI） heating was obtained. The measured results are compared with that of fission chamber detectors, which always act as standard neutron flux monitors. The scCVD diamond detector exhibits good reliability, stability and the capability to withstand harsh radiation environments despite its low detection efficiency due to the small active volume.
Bibliography:scCVD diamond detector, neutron measurement, EAST
DU Tengfei , PENG Xingyu , CHEN Zhongjing, HU Zhimeng , GE Lijian , HU Liqun , ZHONG Guoqiang , PU Neng , CHEN Jinxiang , FAN Tieshuan,（1School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China 2Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China）
a single crystal chemical vapor deposition （scCVD） diamond detector has been successfully employed for neutron measurements in the EAST （Experimental Advanced Superconducting Tokamak） plasmas. The seCVD diamond detector coated with a 5 μm 6LiF （95% 6Li enriched） layer was placed inside a polyethylene moderator to enhance the detection efficiency. The time-dependent neutron emission from deuteron plasmas during neutral beam injection （NBI） heating was obtained. The measured results are compared with that of fission chamber detectors, which always act as standard neutron flux monitors. The scCVD diamond detector exhibits good reliability, stability and the capability to withstand harsh radiation environments despite its low detection efficiency due to the small active volume.
34-1187/TL
ISSN:1009-0630
DOI:10.1088/1009-0630/18/9/12