Extended Bonner sphere spectrometer for dynamic neutron spectrum on HL-2A

Chunyu JIANG (蒋春雨); Jing CAO (曹靖); Zihao LIU (刘子豪); Xiaofei JIANG (蒋小菲); Xianying SONG (宋先瑛); Yipo ZHANG (张轶泼); Zejie YIN (阴泽杰)

doi:10.1088/2058-6272/aa667a

Plasma Science and Technology > 2017 > 19(7): 75601-075601. > DOI: 10.1088/2058-6272/aa667a

Chunyu JIANG (蒋春雨), Jing CAO (曹靖), Zihao LIU (刘子豪), Xiaofei JIANG (蒋小菲), Xianying SONG (宋先瑛), Yipo ZHANG (张轶泼), Zejie YIN (阴泽杰). Extended Bonner sphere spectrometer for dynamic neutron spectrum on HL-2A[J]. Plasma Science and Technology, 2017, 19(7): 75601-075601. DOI: 10.1088/2058-6272/aa667a

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Extended Bonner sphere spectrometer for dynamic neutron spectrum on HL-2A

1 Department of Modern Physics, University of Science and Technology of China, Hefei 230026, People’s Republic of China
2 State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, People’s Republic of China
3 Southwestern Institute of Physics, Chengdu 610041, People’s Republic of China

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Abstract

The extended Bonner sphere spectrometer (EBSS) at the HL-2A tokamak for the neutron spectrum is described. This device was developed on the basis of previous Bonner sphere spectrometry (BSS), aiming to obtain a more accurate neutron spectrum in the HL-2A tokamak hall. The previous BSS contained eight Bonner spheres (BS). This EBSS contains 13 ³He-filled detectors embedded in polyethylene spheres (PS), pre-amplifiers, and a parallel processing data acquisition system (DAQ). A response matrix is simulated in Geant4 taking the effect of the environment into account.
- extended Bonner sphere spectrometer,
- neutron spectrum,
- tokamak

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