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Dual MeV Gamma-Ray and Dark Matter Observatory -- GRAMS Project

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arxiv 1901.03430 v3 pith:WW2K6JHK submitted 2019-01-10 astro-ph.HE hep-exhep-ph

classification astro-ph.HEhep-exhep-ph
keywords gramsantimatterdarkmattergamma-rayobservationsprojectastrophysical
verification ladder T0 review T1 audit T2 compute T3 formal
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GRAMS (Gamma-Ray and AntiMatter Survey) is a novel project that can simultaneously target both astrophysical observations with MeV gamma rays and an indirect dark matter search with antimatter. The GRAMS instrument is designed with a cost-effective, large-scale LArTPC (Liquid Argon Time Projection Chamber) detector surrounded by plastic scintillators. The astrophysical observations at MeV energies have not yet been well-explored (the so-called "MeV-gap") and GRAMS can improve the sensitivity by more than an order of magnitude compared to previous experiments. While primarily focusing on MeV gamma-ray observations, GRAMS is also optimized for cosmic ray antimatter surveys to indirectly search for dark matter. In particular, low-energy antideuterons will provide an essentially background-free dark matter signature. GRAMS will be a next generation experiment beyond the current GAPS (General AntiParticle Spectrometer) project for antimatter survey.

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Cited by 4 Pith papers

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