Neutron beam test of CsI crystal for dark matter search

/ Authors

H.Park, D.H.Choi, I.S.Hahn, M.J.Hwang, W.G.Kang, H.J.Kim, J.H.Kim, S.C.Kim, S.K.Kim, T.Y.Kim

and 13 more authors

Y.D.Kim, Y.-J.Kwon, H.S.Lee, J.H.Lee, M.H.Lee, Selee, S.H.Noh, I.H.Park, E.S.Seo, E.Won, H.Y.Yang, M.S.Yang, I.Yu.

/ Abstract

We have studied the response of Tl-doped and Na-doped CsI crystals to nuclear recoils and γ ’s below 10 keV. The response of CsI crystals to nuclear recoil was studied with mono-energetic neutrons produced by the 3 H(p,n) 3 He reaction. This was compared to the response to Compton electrons scattered by 662 keV γ -ray. Pulse shape discrimination between the response to these γ ’s and nuclear recoils was studied, and quality factors were estimated. The quenching factors for nuclear recoils were derived for both CsI(Na) and CsI(Tl) crystals.

DOI: 10.1016/S0168-9002(02)01274-3