Speaker
Dr
Tsuguo Aramaki
(SLAC)
Description
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 detector surrounded by plastic scintillators. With more than an order of magnitude improved sensitivity, GRAMS can measure gamma-ray lines in the poorly explored MeV energy band, which is the key to understand the nucleosynthesis, including possible gamma-ray emission from neutron star mergers for multi-messenger astronomy. GRAMS will also be a next-generation experiment beyond the GAPS project for antimatter survey. In particular, low-energy antideuterons will provide essentially background-free dark matter signatures and GRAMS could fully investigate the parameter space suggested by the possible dark matter detection by Fermi and AMS-02. The project is working towards the development of a balloon experiment, which will become a milestone for a future satellite mission. In this talk, I will present an overview of the GRAMS project, focusing on the detection concept and science goals.
Primary author
Dr
Tsuguo Aramaki
(SLAC)
