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. MyungS. 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 γ-rays from a 137Cs 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 our previous result from a neutron generator demonstrate the feasibility of performing calibrations of PSD measurements using neutrons from a Am-Be source.

Original languageEnglish
Article numberP11015
JournalJournal of Instrumentation
Volume9
Issue number11
DOIs
StatePublished - 1 Nov 2014

Keywords

  • Dark Matter detectors (WIMPs, axions, etc.)
  • Instrumentation for neutron sources
  • Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)

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