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SUMMARY:The GAPS experiment: sensitive survey of cosmic-ray antinuclei to 
 search dark matter
DTSTART;VALUE=DATE-TIME:20191112T030000Z
DTEND;VALUE=DATE-TIME:20191112T030100Z
DTSTAMP;VALUE=DATE-TIME:20250110T182839Z
UID:indico-contribution-1540@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Takuya Wada on behalf of the GAPS collaboration (Aoy
 ama Gakuin University)\nThe General Antiparticle Spectrometer (GAPS) is an
  international balloon-borne project for indirect dark matter (DM) searche
 s that investigates low-energy antinuclei in cosmic-ray\, especially undis
 covered antideuterons. Cosmic-ray antideuterons can be produced by self-an
 nihilation or decay of WIMP DM. The flux of DM-originated antideuterons ca
 n be orders of magnitude higher than that of the secondary (or background)
  component. Therefore\, antideuterons are considered to be a background-fr
 ee probe to search for DM. GAPS uses a unique concept to identify antinucl
 ei by applying the physics of exotic atom creation and decay. The GAPS ins
 trument is composed of lithium-drifted silicon (Si(Li)) detectors surround
 ed by a double-layered plastic scintillation-counter time-of-flight system
 . An incoming antinucleus forms an exotic atom in the Si(Li) detectors. Th
 rough the deexcitation and nuclear annihilation processes of the exotic at
 om\, characteristic X-rays and charged particles are emitted. By detecting
  and tracking those X-rays and particles\, GAPS has strong particle identi
 fication\, resulting in a high sensitivity for rare antinuclei. The first 
 GAPS flight is scheduled for late 2021. We are currently developing all di
 fferent subsystems\, such as the Si(Li) tracker\, time-of-flight system\, 
 cooling system\, and detailed simulation code of the instrument. We will r
 eport the scientific motivation\, detection concept\, and development stat
 us of GAPS.\n\nhttps://indico.icrr.u-tokyo.ac.jp/event/259/contributions/1
 540/
LOCATION:The University of Tokyo\, Kashiwa Campus
URL:https://indico.icrr.u-tokyo.ac.jp/event/259/contributions/1540/
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