Design of a neutron-TPC prototype and its performance evaluation based on an alpha-particle test

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1. Wei, K., Zhang, H.-F., He, Z.-X. et al. Multi-parameter global calculations of fission fragments using a simplified two-dimensional scission-point model[J]. Chinese Physics C, 2021, 45(2): 024109. doi: 10.1088/1674-1137/abd083
2. Fu, Y., Tian, Y., Li, Y. et al. Directional fast neutron detection using a time projection chamber and plastic scintillation detectors[J]. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2020. doi: 10.1016/j.nima.2018.10.123
3. Fu, Y., Tian, Y., Li, Y. et al. Performance study of a directional fast neutron detection system based on TPC and plastic scintillation detectors[J]. Journal of Instrumentation, 2019, 14(6): P06034. doi: 10.1088/1748-0221/14/06/P06034
4. Zhang, Y.L., Qi, H.R., Wen, Z.W. et al. Spatial resolution measurement of triple-GEM detector and diffraction imaging test at synchrotron radiation[J]. Journal of Instrumentation, 2017, 12(4): P04015. doi: 10.1088/1748-0221/12/04/P04015
5. Huang, M., Li, Y., Niu, L. et al. Performance study of the neutron-TPC[J]. Chinese Physics C, 2017, 41(2): 026001. doi: 10.1088/1674-1137/41/2/026001
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HUANG Meng, LI Yu-Lan, NIU Li-Bo, LI Jin, DENG Zhi, HE Li, ZHANG Hong-Yan, CHENG Xiao-Lei, FU Jian-Qiang and LI Yuan-Jing. Design of a neutron-TPC prototype and its performance evaluation based on an alpha-particle test[J]. Chinese Physics C, 2015, 39(8): 086003. doi: 10.1088/1674-1137/39/8/086003
HUANG Meng, LI Yu-Lan, NIU Li-Bo, LI Jin, DENG Zhi, HE Li, ZHANG Hong-Yan, CHENG Xiao-Lei, FU Jian-Qiang and LI Yuan-Jing. Design of a neutron-TPC prototype and its performance evaluation based on an alpha-particle test[J]. Chinese Physics C, 2015, 39(8): 086003.  doi: 10.1088/1674-1137/39/8/086003 shu
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Received: 2014-10-23
Revised: 2015-04-10
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Design of a neutron-TPC prototype and its performance evaluation based on an alpha-particle test

Abstract: A neutron-TPC (nTPC) is being developed for use as a fast neutron spectrometer in the fields of nuclear physics, nuclear reactor operation monitoring, and thermo-nuclear fusion plasma diagnostics. An nTPC prototype based on a GEM-TPC (Time Projection Chamber with Gas Electron Multiplier amplification) has been assembled and tested using argon-hydrocarbon mixture as the working gas. By measuring the energy deposition of the recoil proton in the sensitive volume and the angle of the proton track, the incident neutron energy can be deduced. A Monte Carlo simulation was carried out to analyze the parameters affecting the energy resolution of the nTPC, and gave an optimized resolution under ideal conditions. An alpha particle experiment was performed to verify its feasibility, and to characterize its performance, including energy resolution and spatial resolution. Based on the experimental measurement and analysis, the energy resolution (FWHM) of the nTPC prototype is predicted to be better than 3.2% for 5 MeV incident neutrons, meeting the performance requirement (FWHM<5%) for the nTPC prototype.

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