Nuclear Engineering and Technology

  • 제53권6호
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  • Pages.1964-1969
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  • 2021
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Measurement of TOF of fast neutrons with 238U target

  • Li, Meng (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Guan, Yuanfan (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Lu, Chengui (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Zhang, Junwei (North China University of Water Resources and Electric Power) ;
  • Yuan, Xiaohua (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Duan, Limin (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Yang, Herun (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Hu, Rongjiang (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • He, Zhiyong (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Wei, Xianglun (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Ma, Peng (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Gan, Zaiguo (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Yang, Chunli (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Zhang, Hongbin (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Chen, Liang (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Qiu, Tianli (Institute of Modern Physics, Chinese Academy of Sciences) ;
  • Hou, Yikai (School of Nuclear Science and Technology, Lanzhou University)
  • 투고 : 2020.03.29
  • 심사 : 2020.12.01
  • 발행 : 2021.06.25
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초록

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.

키워드

과제정보

This work is financially supported by National Key R&D Program of China (Grant No. 2018YFE0205200), the National Natural Science Foundation of China (Grant No. U1432123, 11575268, 11875174, 11875301, 11675238).

참고문헌

  1. J. Christiansen, G. Hempel, H. Ingwersen, Investigation of delayed fission in 236U, Nucl. Phys. 239 (1975) 253-259. https://doi.org/10.1016/0375-9474(75)90449-2
  2. e. a F. H, G. Hempel, G. Schatz, Development of parallel-plate avalanche counters for the detection of fission fragments, Nucl. Instrum. Methods 131 (1975) 445-450. https://doi.org/10.1016/0029-554X(75)90432-2
  3. H. Stelzer, A large area parallel plate avalanche counter, Nucl. Instrum. Methods 133 (1976) 409-413. https://doi.org/10.1016/0029-554X(76)90423-7
  4. A. Breskin, N. Zwang, Timing properties of parallel plate avalanche counters with light particles, Nucl. Instrum. Methods 144 (1977) 609-611. https://doi.org/10.1016/0029-554X(77)90034-9
  5. J.C. Sanabria, B.L. Berman, C. Cetina, Parallel-plate avalanche detectors with anode wire grids, Nucl Phys A 441 (2000) 525-534.
  6. H. Kumagai, T. Ohnishi, Development of parallel plate avalanche counter (PPAC) for BigRIPS fragment separator, Nucl. Instrum. Methods Phys. Res. B 317 (2013) 717-727. https://doi.org/10.1016/j.nimb.2013.08.050
  7. C.Y. Wu, R.A. Henderson, A multiple parallel-plate avalanche counter for fission-fragment detection, Nucl. Instrum. Methods Phys. Res. A 794 (2015) 76-79. https://doi.org/10.1016/j.nima.2015.05.010
  8. Xianglun Wei, Fenhai Guan, Herun Yang, Development of Parallel Plate Avalanche Counter for heavy ion collision in radioactive ion beam, Nucl. Eng. Technol. 52 (3) (2020) 575-580. https://doi.org/10.1016/j.net.2019.08.020
  9. S. A, Geant4 - a simulation toolkit, Nucl. Instrum. Methods Phys. Res. A 506 (2003) 250-303. https://doi.org/10.1016/S0168-9002(03)01368-8
  10. J. A, Geant4 developments and applications, IEEE Trans. Nucl. Sci. 53 (2006) 270-278. https://doi.org/10.1109/TNS.2006.869826