Development of the General Antiparticle Spectrometer, A Balloon-Based Search for Dark Matter

Details Development of the General Antiparticle Spectrometer, A Balloon-Based Search for Dark Matter Development of the General Antiparticle Spectrometer, A Balloon-Based Search for Dark Matter

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21347510o&link_type=abstract

American Astronomical Society, AAS Meeting #213, #475.10; Bulletin of the American Astronomical Society, Vol. 41, p.436

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We report on recent progress developing the General Antiparticle Spectrometer (GAPS), a recently approved NASA experiment. GAPS will perform an indirect search for weakly interacting massive particles (WIMPS) by detecting antideuterons. The antideuterons are produced during WIMP-WIMP annihilations in the galactic halo. GAPS detects the characteristic atomic X-rays, mesons and hadrons produced in the atomic capture and subsequent nuclear annihilation of the antideuteron in a target nucleus. GAPS requires the development of a novel pixellated Si(Li) detector to be employed in very large area ( 4 m^2 ) arrays that provide both tracking information and very good ( 2 keV) energy resolution. We describe the basic GAPS concept, the overall experiment design and capabilities, and details of the Si(Li) detector development program.

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