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arXiv · 1409.0948

Neutron calibration facility with an Am-Be source for pulse shape discrimination measurement of CsI(Tl) crystals

H. S. Lee·H. Bhang·J. H. Choi·S. Choi·I. S. Hahn·E. J. Jeon·H. W. Joo·W. G. Kang·G. B. Kim·H. J. Kim·K. W. Kim·S. C. Kim·S. K. Kim·Y. D. Kim·Y. H. Kim·J. H. Lee·J. K. Lee·D. S. Leonard·J. Li·S. S. Myung·S. L. Olsen·J. H. So
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Abstract

We constructed a neutron calibration facility based on a 300-mCi Am-Be source in conjunction with a search for weakly interacting massive particle candidates for dark matter. The facility is used to study the response of CsI(Tl) crystals to nuclear recoils induced by neutrons from the Am-Be source and comparing them with the response to electron recoils produced by Compton scattering of 662-keV $\gamma$-rays from a $^{137}$Cs source. The measured results on pulse shape discrimination (PSD) between nuclear- and electron-recoil events are quantified in terms of quality factors. A comparison with similar result from a neutron reactor demonstrate the feasibility of performing calibrations of PSD measurements using neutrons from a Am-Be source.

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H. S. Lee, H. Bhang, J. H. Choi, S. Choi, I. S. Hahn, E. J. Jeon, H. W. Joo, W. G. Kang, G. B. Kim, H. J. Kim, K. W. Kim, S. C. Kim, S. K. Kim, Y. D. Kim, Y. H. Kim, J. H. Lee, J. K. Lee, D. S. Leonard, J. Li, S. S. Myung, S. L. Olsen, J. H. So. 2014-09-03. Neutron calibration facility with an Am-Be source for pulse shape discrimination measurement of CsI(Tl) crystals. https://doi.org/10.1088/1748-0221/9/11/p11015

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