Track reconstruction based on Hough-transform for nTPC

NIU Li-Bo; LI Yu-Lan; HUANG Meng; HE Bin; LI Yuan-Jing

doi:10.1088/1674-1137/38/12/126201

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

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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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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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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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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Track reconstruction based on Hough-transform for nTPC

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通讯作者: 陈斌, bchen63@163.com

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