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Comparative Study of a GEM-based Fast Neutron Detector Using 4He/CO2 and 4He/CO2/C4H10 Gas Mixtures
Paper Type  |
Contributed Paper |
Title |
Comparative Study of a GEM-based Fast Neutron Detector Using 4He/CO2 and 4He/CO2/C4H10 Gas Mixtures |
Author |
Kiadtisak Saenboonruang*, Anawat Rittirong, Khem Chirapatpimol and Thiraphat Vilaithong |
Email |
fscikssa@ku.ac.th |
|
Abstract: 1H- or 4He-contained gas mixtures are usually used to detect fast neutrons, which relies on elastic scattering between fast neutrons and light gas molecules. In this research, gas mixtures of 4He/CO2 (80:20 and 70:30) and 4He/CO2/C4H10 (70:23:7) were flowed through a 10 cm×10 cm triple-Gas Electron Multiplier (GEM) detector at a constant flow rate of 3.0 L/hr in order to detect fast neutrons. Comparisons of relative efficiencies, relative gains, and detection uniformity for all gas types were investigated by measuring signal counts and signal amplitudes. Results showed that a gas mixture of 4He/CO2 (80:20) had the highest relative efficiency and relative gains amongst all gas mixture types. In terms of detection uniformity, detection efficiency at the center of the active area was approximately 20% higher than areas close to the detector edges. Details of basic knowledge of GEM, experimental procedures, results and discussion are included in this article. |
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Start & End Page |
1686 - 1694 |
Received Date |
2016-09-07 |
Revised Date |
|
Accepted Date |
2017-01-09 |
Full Text |
Download |
Keyword |
GEM detector, neutrons, fast neutrons, helium, efficiency, gain, uniformity |
Volume |
Vol.44 No.4 (October 2017) |
DOI |
|
Citation |
Saenboonruang* K., Rittirong A., Chirapatpimol K. and Vilaithong T., Comparative Study of a GEM-based Fast Neutron Detector Using 4He/CO2 and 4He/CO2/C4H10 Gas Mixtures, Chiang Mai Journal of Science, 2017; 44(4): 1686-1694. |
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