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Chinese Physics C> 2014, Vol. 38> Issue(12) : 126201 DOI: 10.1088/1674-1137/38/12/126201

Track reconstruction based on Hough-transform for nTPC

  • A GEM-TPC prototype, which will be used as a fast neutron spectrometer based on the recoil proton method, is designed and being constructed in Tsinghua University. In order to derive the recoil angle of the recoil proton, tracks of recoil proton in the TPC sensitive volume must be reconstructed. An algorithm based on Hough-transform for track finding and least square method for track fitting was developed in this paper. Based on the Monte Carlo simulation data given by Geant4, a detailed track reconstruction process was introduced and the spectrum of induced fast neutron was derived here. The results show that the algorithm was effective and high-performance. With the recoil angle of the proton less than 30°, a 4.4% FWHM neutron energy resolution was derived for 5 MeV induced fast neutron, and the detection efficiency was about 2×10-4.
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    [1] Brooks F D, Klein H. Nucl. Instrum. Methods A, 2002, 476: 1[2] Matsumoto T, Harano H, Uritani, A et al. IEEE Trans. Nucl. Sci., 2005, 52: 2923[3] Blum W, Rolandi L. Particle Detection with Drift Chambers. Singapore: Springer-Verlag, Second printing, 1994[4] LI Yu-Lan, KANG Ke-Jun, LI Jin et al. HEP NP, 2007, 31: 223 (in Chinese)[5] HUANG M, LI Y L, DENG Z et al. IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC), 2012. 146[6] Knoll G F, Radiation Detection and Measurement. New York: John Wiley Sons Inc. 2010. 553-569[7] HE L, DENG Z, LI Y L. IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012. 797-800[8] Hough P V C. Proceeding of the International Conference on High Energy Accelerators and Instrumentation CERN, Geneva[9] Niblack W, Petkovic D. Mach. Vision Appl., 1990, 3: 87

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NIU Li-Bo, LI Yu-Lan, HUANG Meng, HE Bin and LI Yuan-Jing. Track reconstruction based on Hough-transform for nTPC[J]. Chinese Physics C, 2014, 38(12): 126201. doi: 10.1088/1674-1137/38/12/126201
NIU Li-Bo, LI Yu-Lan, HUANG Meng, HE Bin and LI Yuan-Jing. Track reconstruction based on Hough-transform for nTPC[J]. Chinese Physics C, 2014, 38(12): 126201.  doi: 10.1088/1674-1137/38/12/126201 shu
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Received: 2014-01-20
Revised: 2014-01-20
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Track reconstruction based on Hough-transform for nTPC

    Corresponding author: LI Yu-Lan,
  • Received Date: 2014-01-20
  • Accepted Date: 2014-01-20
  • Available Online: 2014-12-05

Abstract: A GEM-TPC prototype, which will be used as a fast neutron spectrometer based on the recoil proton method, is designed and being constructed in Tsinghua University. In order to derive the recoil angle of the recoil proton, tracks of recoil proton in the TPC sensitive volume must be reconstructed. An algorithm based on Hough-transform for track finding and least square method for track fitting was developed in this paper. Based on the Monte Carlo simulation data given by Geant4, a detailed track reconstruction process was introduced and the spectrum of induced fast neutron was derived here. The results show that the algorithm was effective and high-performance. With the recoil angle of the proton less than 30°, a 4.4% FWHM neutron energy resolution was derived for 5 MeV induced fast neutron, and the detection efficiency was about 2×10-4.

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