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CSI(TL) DARK MATTER SEARCH

    https://doi.org/10.1142/9789812791313_0049Cited by:1 (Source: Crossref)
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    Abstract:

    We are preparing an experiment for dark matter(WIMP) search using CsI(Tℓ) crystal. The detection threshold of a large CsI(Tℓ) crystal coupled with green extended pmts was down to 2 keV, and the pulse shape discrimination power of the crystal shows better separation of nuclear recoil from background electron signals than NaI(Tℓ) . With these characteristics, CsI(Tℓ) is another good material for WIMP search experiment. The disadvantage of CsI(Tℓ) is the internal background from cesium and rubicium ratioisotopes. In this report, the methods to reduce these ratioisotopes is described, and a perspective for the experiment is presented.