Development of the radial neutron camera system for the HL-2A tokamak

Journal Article · Wed Jun 15 00:00:00 EDT 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4953109· OSTI ID:22597972

Yang, J. W.; Liu, Yi; Yuan, G. L.; Zhang, P. F.; Song, X. Y.; Chen, W.; Ji, X. Q.; Li, X.; Fu, B. Z.; Song, X. M.; Shi, Z. B.; Yang, Q. W.; Duan, X. R. ^[1]; Fan, T. S.; Xie, X. F.; Du, T. F.; Ge, L. J. ^[2]; Luo, X. B. ^[3]; Isobe, M. ^[4]

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1. Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041 (China)
2. School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China)
3. Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610041 (China)
4. National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5259 (Japan)

A new radial neutron camera system has been developed and operated recently in the HL-2A tokamak to measure the spatial and time resolved 2.5 MeV D-D fusion neutron, enhancing the understanding of the energetic-ion physics. The camera mainly consists of a multichannel collimator, liquid-scintillation detectors, shielding systems, and a data acquisition system. Measurements of the D-D fusion neutrons using the camera have been successfully performed during the 2015 HL-2A experiment campaign. The measurements show that the distribution of the fusion neutrons in the HL-2A plasma has a peaked profile, suggesting that the neutral beam injection beam ions in the plasma have a peaked distribution. It also suggests that the neutrons are primarily produced from beam-target reactions in the plasma core region. The measurement results from the neutron camera are well consistent with the results of both a standard {sup 235}U fission chamber and NUBEAM neutron calculations. In this paper, the new radial neutron camera system on HL-2A and the first experimental results are described.

• OSTI ID: 22597972
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BEAM INJECTION
BEAMS
COLLIMATORS
DATA ACQUISITION
DATA ACQUISITION SYSTEMS
DISTRIBUTION
FISSION
FISSION CHAMBERS
HL-2A TOKAMAK
LIQUID SCINTILLATION DETECTORS
LIQUIDS
MEV RANGE 01-10
NEUTRON CAMERAS
NEUTRONS
PLASMA
SCINTILLATIONS
TIME RESOLUTION
URANIUM 235