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Current status and future plans for the general antiparticle spectrometer (GAPS) |
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| Authors: | H Fuke JE Koglin T Yoshida T Aramaki WW Craig L Fabris F Gahbauer CJ Hailey FJ Jou N Madden K Mori HT Yu KP Ziock |
| Institution: | aInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS/JAXA), Sagamihara, Kanagawa 229-8510, Japan;bColumbia University, New York, NY 10027, USA;cLawrence Livermore National Laboratory, Livermore, CA 94550, USA;dUniversity of Latvia, Riga, LV 1586, Latvia;eUniversity of Toronto, Toronto, Ont., Canada M5S 3H8;fOak Ridge National Laboratory, Oak Ridge, TN 37831, USA |
| Abstract: | We discuss current progress and future plans for the general antiparticle spectrometer experiment (GAPS). GAPS detects antideuterons through the X-rays and pions emitted during the deexcitation of exotic atoms formed when the antideuterons are slowed down and stopped in targets. GAPS provides an exceptionally sensitive means to detect cosmic-ray antideuterons. Cosmic-ray antideuterons can provide indirect evidence for the existence of dark matter in such form as neutralinos or Kaluza–Klein particles. We describe results of accelerator testing of GAPS prototypes, tentative design concepts for a flight GAPS detector, and near-term plans for flying a GAPS prototype on a balloon. |
| Keywords: | Dark matter Dark matter detectors Cosmic-rays Cosmic-ray detectors Antiparticle Antideuteron Exotic atom GAPS |
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