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Point contact germanium detectors at 500 eVee threshold for light dark matter searches

Soma, Arun Kumar
Li, Hau-Bin
Lin, Shin-Ted
Wong, Henry Tsz-King

Publication date

June 2016

DOI

10.1016/j.nuclphysbps.2015.09.034

Publisher

Elsevier B.V.

ISSN

2405-6014

Abstract

AbstractGermanium detectors with sub-keV sensitivities can probe low-mass WIMP Dark Matter. This experimental approach is pursued at Kuo-Sheng Neutrino Laboratory (KSNL) in Taiwan and at China Jinping Underground Laboratory (CJPL) in China via TEXONO and CDEX programs, respectively. The highlights of R&D efforts on point contact germanium detectors and in particular the differentiation of surface and bulk events by pulse shape analysis are described. The latest results on WIMP-nucleon scattering cross-sections are also presented. Some of the allowed parameter space implied by other experiments are probed and excluded

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