Graphene-based detectors for directional dark matter detection

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Title:	Graphene-based detectors for directional dark matter detection
Authors:	Shang-Yung Wang
Keywords:	detector;recoil;sensitivity;graphene;van der Waals;sulfur;background;nitrogen;time projection chamber;design;bibliography;measurement methods
Date:	2019-07-03
Issue Date:	2016-01-06 11:03:55 (UTC+8)
Publisher:	Springer Nature
Abstract:	Dark matter detectors with directional sensitivity have the capability to distinguish dark matter induced nuclear recoils from isotropic backgrounds, thus providing a smoking gun signature for dark matter in the Galactic halo. Motivated by recent progress in graphene and two-dimensional materials research, we propose a novel class of directional dark matter detectors utilizing graphene-based van der Waals heterostructures. A conceptual design of the detector based on graphene/hexagonal boron nitride and graphene/molybdenum disulfide heterostructures is developed and analyzed. The proposed detector has modular scalability, keV-scale detection threshold, nanometer position resolution, sensitivity down to 10 GeV/c^2 dark matter mass, and intrinsic head-tail discrimination and background rejection capabilities.
Relation:	The European Physical Journal C 79, 561
DOI:	10.1140/epjc/s10052-019-7071-2
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

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