Physics:General AntiParticle Spectrometer

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The GAPS experiment prepares to launch from Antarctica

General AntiParticle Spectrometer (GAPS) is a NASA experiment that uses a high-altitude balloon flying in Antarctica to look for antideuteron particles from outer space cosmic rays,[1] in an effort to search for dark matter. Anti-deuterons could perhaps be produced by the annihilation of hypothetical weakly interacting massive particles (WIMPs).[2] The goal of the GAPS experiment is to capture anti-deuterons in a target material, to form an exotic atom in an excited state. The exotic atom would quickly decay, producing detectable X-rays energies with pion signature from nuclear annihilation.[3]

The GAPS ground test was successfully performed using a particle accelerator at KEK in 2004 and 2005. The first high-altitude balloon test was done in June 2012 with six Si(Li) detectors.

GAPS was launched from the Antarctic McMurdo Station on 16 December 2025.[4]

GAPS team

The team includes:[5]

See also

  • 2025 in Antarctica

References

  1. Aramaki, T.; Boggs, S.; Bufalino, S.; Dal, L.; Doetinchem, P. von; Donato, F.; Fornengo, N.; Fuke, H. et al. (4 April 2016). "Review of the theoretical and experimental status of dark matter identification with cosmic-ray antideuterons". Physics Reports 618: 1. doi:10.1016/j.physrep.2016.01.002. Bibcode2016PhR...618....1A. http://arxiv.org/abs/1505.07785. 
  2. "Antideuterons as a signature of supersymmetric dark matter". Physical Review D 62 (4). July 2000. doi:10.1103/physrevd.62.043003. Bibcode2000PhRvD..62d3003D. 
  3. Aramaki, T.; Hailey, C. J.; Boggs, S. E.; Doetinchem, P. von; Fuke, H.; Mognet, S. I.; Ong, R. A.; Perez, K. et al. (13 August 2015). "Antideuteron Sensitivity for the GAPS Experiment". Astroparticle Physics 74: 6. doi:10.1016/j.astropartphys.2015.09.001. Bibcode2016APh....74....6A. http://arxiv.org/abs/1506.02513. 
  4. "First NASA Scientific Balloon Launches from Antarctica - NASA". 16 December 2025. https://www.nasa.gov/blogs/wallops/2025/12/16/first-nasa-scientific-balloon-launches-from-antarctica/. 
  5. UCLA, Cosmic-ray Cosmic-ray antideuteron searches antideuteron searches, Feb. 2016

Further reading