title: Neutron emission measurement at the HL-2A tokamak device with a liquid scintillation detector.
abstract: Neutron emission measurement at the HL-2A tokamak device with a liquid scintillation detector is described. The detector was placed at a location with little structure material in the field of view, and equipped with a gain monitoring system which could provide the possibility to evaluate the gain variation as well as to correct for the detector response. Time trace of the neutron emissivity was obtained and it was consistent with the result of a standard (235)U fission chamber. During the plasma discharge the neutron yield could vary by about four orders of magnitude and the fluctuation of the detector gain was up to about 6%. Pulse height spectrum of the liquid scintillation detector was constructed and corrected with the aid of the gain monitoring system, and the correction was found to be essential for the assessment of the neutron energy spectrum. This successful measurement offered experience and confidence for the application of liquid scintillation detectors in the upcoming neutron camera system.
authors.affiliation: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871 Beijing, China.
authors.forename: Xufei
authors.initials: X
authors.lastname: Xie
authors.affiliation: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871 Beijing, China.
authors.forename: Zhongjing
authors.initials: Z
authors.lastname: Chen
authors.affiliation: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871 Beijing, China.
authors.forename: Xingyu
authors.initials: X
authors.lastname: Peng
authors.affiliation: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871 Beijing, China.
authors.forename: Xi
authors.initials: X
authors.lastname: Yuan
authors.affiliation: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871 Beijing, China.
authors.forename: Xing
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Dipartimento di Fisica 'G. Occhialini', Universita degli Studi di Milano Bicocca, Piazza della Scienza 3, 20126 Milano, Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Gorini
authors.affiliation: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871 Beijing, China.
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Cui
authors.affiliation: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871 Beijing, China.
authors.forename: Tengfei
authors.initials: T
authors.lastname: Du
authors.affiliation: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871 Beijing, China.
authors.forename: Zhimeng
authors.initials: Z
authors.lastname: Hu
authors.affiliation: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871 Beijing, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.affiliation: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871 Beijing, China.
authors.forename: Tieshuan
authors.initials: T
authors.lastname: Fan
authors.affiliation: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871 Beijing, China.
authors.forename: Jinxiang
authors.initials: J
authors.lastname: Chen
authors.affiliation: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871 Beijing, China.
authors.forename: Xiangqing
authors.initials: X
authors.lastname: Li
authors.affiliation: School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871 Beijing, China.
authors.forename: Guohui
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Southwestern Institute of Physics, 610000 Chengdu, China.
authors.forename: Guoliang
authors.initials: G
authors.lastname: Yuan
authors.affiliation: Southwestern Institute of Physics, 610000 Chengdu, China.
authors.forename: Jinwei
authors.initials: J
authors.lastname: Yang
authors.affiliation: Southwestern Institute of Physics, 610000 Chengdu, China.
authors.forename: Qingwei
authors.initials: Q
authors.lastname: Yang