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1. chinaXiv:201609.00878 [pdf]

Measurement of the quenching and channeling effects in a CsI crystal used for a WIMP search

J. H. Lee; G. B. Kim; I. S. Seong; B. H. Kim; J. H. Kim; J. Li; J.W. Park; J. K. Lee; K. W. Kim; H. Bhang; S. C. Kim; Seonho Choi; J. H. Choi; H. W. Joo; S. J. Lee; S. L. Olsen; S. S. Myung; S. K. Kim; Y. D. Kim; W. G. Kang
Subjects: Physics >> Nuclear Physics

We have studied channeling effects in a Cesium Iodide (CsI) crystal that is similar in composition to the ones being used in a search for Weakly Interacting Massive Particles (WIMPs) dark matter candidates, and measured its energy-dependent quenching factor, the relative scintillation yield for electron and nuclear recoils. The experimental results are reproduced with a GEANT4 simulation that includes a model of the scintillation efficiency as a function of electronic stopping power. We present the measured and simulated quenching factors and the estimated effects of channeling.

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