Snowmass 2021 Letter of Interest: The GRAMS Project: MeV Gamma-Ray Observations and Antimatter-Based Dark Matter Searches
Tsuguo Aramaki, Jonathan Asaadi, Yuto Ichinohe, Yoshiyuki Inoue,, Georgia Karagiorgi, Jon Leyva, Reshmi Mukherjee, Hirokazu Odaka, Kerstin, Perez, William Seligman, Satoshi Takashima, Naomi Tsuji, Hiroki Yoneda
TL;DR
The GRAMS project proposes a next-generation balloon/satellite mission utilizing Liquid Argon TPC technology to enhance MeV gamma-ray observations and antimatter dark matter searches, aiming for significant sensitivity improvements.
Contribution
It introduces a novel large-scale Liquid Argon TPC detector for combined gamma-ray and antimatter dark matter research, improving sensitivity and coverage.
Findings
Enhanced gamma-ray detection sensitivity
Extended dark matter parameter space coverage
Feasibility of cost-effective large-scale detector deployment
Abstract
The Gamma-Ray and AntiMatter Survey (GRAMS) project is a proposed next-generation balloon/satellite mission targeting both MeV gamma-ray observations and antimatter-based dark matter searches. A cost-effective, large-scale Liquid Argon Time Projection Chamber (LArTPC) detector technology will allow GRAMS to have a significantly improved sensitivity to MeV gamma rays while extensively probing dark matter parameter space via antimatter measurements.
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Dark Matter and Cosmic Phenomena · Gamma-ray bursts and supernovae