| First neutron spectrometry measurement at the HL-2A Tokamak |
| |
| 作者姓名： | 袁熙 张兴 谢旭飞 陈忠靖 彭星宇 樊铁栓 陈金象 李湘庆 袁国梁 杨青魏 杨进蔚 |
| |
| 作者单位： | 1 State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China;;2 Southwestern Institute of Physics, Chengdu 610041, China |
| |
| 基金项目： | Supported by State Key Development Program for Basic Research of China （2013GB106004, 2012GB101003, 2008CB717803）, National Natural Science Foundation of China （91226102） and National Science and Technology Support Program （2011BAI02B01） |
| |
| 摘 要： | A compact neutron spectrometer based on the liquid scintillator is presented for neutron energy spectrum measurements at the HL-2A Tokamak. The spectrometer was well characterized and a fast digital pulse shape discrimination software was developed using the charge comparison method. A digitizer data acquisition system with a maximum frequency of 1 MHz can work under an environment with a high count rate at HL-2A Tokamak. Specific radiation and magnetic shielding for the spectrometer were designed for the neutron spectrum measurement at the HL-2A Tokamak. For pulse height spectrum analysis, dedicated numerical simulation utilizing NUBEAM combined with GENESIS was performed to obtain the neutron energy spectrum. Subsequently, the transportation process from the plasma to the detector was evaluated with Monte Carlo calculations. The distorted neutron energy spectrum was folded with the response matrix of the liquid scintillation spectrometer, and good consistency was found between the simulated and measured pulse height spectra. This neutron spectrometer based on a digital acquisition system could be well adopted for the investigation of the auxiliary heating behavior and the fast-ion related phenomenon on different tokamak devices.
|
| 关 键 词： | HL-2A装置 中子能谱测量 光谱测量 脉冲形状甄别 GENESIS 数据采集系统 液体闪烁谱仪 托卡马克装置 |
| 收稿时间： | 2013-4-11 |
First neutron spectrometry measurement at the HL-2A Tokamak |
| |
| YUAN Xi,ZHANG Xing,XIE Xu-Fei,CHEN Zhong-Jing,PENG Xing-Yu,FAN Tie-Shuan,CHEN Jin-Xiang,LI Xiang-Qing,YUAN Guo-Liang,YANG Qing-Wei,YANG Jin-Wei.First neutron spectrometry measurement at the HL-2A Tokamak[J].High Energy Physics and Nuclear Physics,2013,37(12):52-57. |
| |
| Authors: | YUAN Xi ZHANG Xing XIE Xu-Fei CHEN Zhong-Jing PENG Xing-Yu FAN Tie-Shuan CHEN Jin-Xiang LI Xiang-Qing YUAN Guo-Liang YANG Qing-Wei YANG Jin-Wei |
| |
| Institution: | [1]State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China [2]Southwestern Institute of Physics, Chengdu 610041, China |
| |
| Abstract: | compact neutron spectrometer, digital signal processing, beam-thermal neutron |
| |
| Keywords: | compact neutron spectrometer digital signal processing beam-thermal neutron |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理 C》浏览原始摘要信息 |
| 点击此处可从《中国物理 C》下载免费的PDF全文 |
