Potential reduction interior point algorithm unfolding of neutron energy spectrum measured by recoil proton method

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Guan-Ying Wang, Ran Han, Xiao-Ping Ouyang, Jin-Cheng He and Jun-Yao Yan. Potential reduction interior point algorithm unfolding of neutron energy spectrum measured by recoil proton method[J]. Chinese Physics C, 2017, 41(5): 056201. doi: 10.1088/1674-1137/41/5/056201
Guan-Ying Wang, Ran Han, Xiao-Ping Ouyang, Jin-Cheng He and Jun-Yao Yan. Potential reduction interior point algorithm unfolding of neutron energy spectrum measured by recoil proton method[J]. Chinese Physics C, 2017, 41(5): 056201.  doi: 10.1088/1674-1137/41/5/056201 shu
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Received: 2016-12-09
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    supported by Fundamental Research Funds for Central Universities (2016XS61), and Opening Foundation of State Key Laboratory of Intense Pulsed Radiation Simulation and Effect.

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Potential reduction interior point algorithm unfolding of neutron energy spectrum measured by recoil proton method

    Corresponding author: Ran Han,
  • 1.  North China Electric Power University, Beijing 102206, China
  • 2. North China Electric Power University, Beijing 102206, China
  • 3. Beijing Institute of Spacecraft Environment Engineering, Beijing 100029, China
  • 4. Northwest Institute of Nuclear Technology, Xi'an 710024, China
Fund Project:  supported by Fundamental Research Funds for Central Universities (2016XS61), and Opening Foundation of State Key Laboratory of Intense Pulsed Radiation Simulation and Effect.

Abstract: A reconstruction algorithm for unfolding neutron energy spectra has been developed, based for the first time on the potential reduction interior point algorithm. This algorithm can be easily applied to neutron energy spectrum reconstruction in the recoil proton method. We transform the neutron energy spectrum unfolding problem into a typical nonnegative linear complementarity problem. The recoil proton energy spectrum and response matrix at angles of 0^o and 30^o are generated by the Geant4 simulation toolkit. Several different neutron energy test spectra are also employed. It is found that this unfolding algorithm is stable and provides efficient, accurate results.

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