Sep 8 – 14, 2019
Toyama International Conference Center
Japan timezone

The GAPS experiment – a search for cosmic-ray antinuclei from dark matter

Sep 10, 2019, 3:20 PM
202 (Toyama International Conference Center)


Toyama International Conference Center
Oral presentation in parallel session Dark matter DM6: Indirect detection


Dr Masayoshi Kozai (ISAS/JAXA)


The General Antiparticle Spectrometer (GAPS) is a balloon-borne experiment which aims to survey low-energy cosmic-ray antinuclei. A novel detection concept that utilizes the physics of exotic atoms allows GAPS to realize a large sensitive area, a low energy threshold, and a high identification capability for antinuclei. The primary goal is to search for antideuterons in the energy region <0.25 GeV/n, where they are predicted to be background-free probes for dark matter-annihilation or decay in the Galactic halo. GAPS will also measure precise low-energy antiproton spectra, which provide crucial information about the source and propagation of cosmic rays. Three flights on long-duration balloons from Antarctica are planned; the first flight of GAPS is scheduled for late 2021. We will present the scientific motivation, detection concept, development status, and plans for GAPS.

Primary author

Dr Masayoshi Kozai (ISAS/JAXA)


GAPS collaboration

Presentation materials