Measurement of TOF of fast neutrons with 238U target

Meng Li; Yuanfan Guan; Chengui Lu; Junwei Zhang; Xiaohua Yuan; Limin Duan; Herun Yang; Rongjiang Hu; Zhiyong He; Xianglun Wei; Peng Ma; Zaiguo Gan; Chunli Yang; Hongbin Zhang; Liang Chen; Tianli Qiu; Yikai Hou

Nuclear Engineering and Technology (Jun 2021)

Measurement of TOF of fast neutrons with 238U target

Meng Li,
Yuanfan Guan,
Chengui Lu,
Junwei Zhang,
Xiaohua Yuan,
Limin Duan,
Herun Yang,
Rongjiang Hu,
Zhiyong He,
Xianglun Wei,
Peng Ma,
Zaiguo Gan,
Chunli Yang,
Hongbin Zhang,
Liang Chen,
Tianli Qiu,
Yikai Hou

Affiliations

Meng Li: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
Yuanfan Guan: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
Chengui Lu: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
Junwei Zhang: North China University of Water Resources and Electric Power, Zhengzhou, 450000, China
Xiaohua Yuan: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
Limin Duan: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
Herun Yang: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China; Corresponding author. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
Rongjiang Hu: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
Zhiyong He: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
Xianglun Wei: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
Peng Ma: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
Zaiguo Gan: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
Chunli Yang: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
Hongbin Zhang: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
Liang Chen: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
Tianli Qiu: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
Yikai Hou: School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China

Journal volume & issue: Vol. 53, no. 6
pp. 1964 – 1969

Abstract

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We developed a Dual-PPACs detector for fast neutron measurements that consists of two sets of PPAC: conventional PPAC and fission PPAC. A238U(U3O8) coating is placed in the fission PPAC’s anode, which is used as the neutrons conversion layer. An experiment was performed to measure neutron time-of-flight (TOF) in which 252Cf spontaneous fission source was used. An excellent time resolution of 164ps has been observed at 6 mbar in isobutene gas. With the excellent time resolution of Dual-PPACs detector, exact neutron energy can be extracted from the timing measurement. The experimental detection efficiency was 1.9 × 10−7, consistent with the efficiency of 2.5 × 10−7 given by a Geant4 simulation. Ultimately, the results show that the Dual-PPACs detector is a suitable candidate for measuring fast neutrons in the future CiADS system.

Published in Nuclear Engineering and Technology

ISSN: 1738-5733 (Print)
Publisher: Elsevier
Country of publisher: Korea, Republic of
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power
Website: http://www.journals.elsevier.com/nuclear-engineering-and-technology

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