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K. Mori, C.J. Hailey, J. Koglin, H. Yu (Columbia Astrophysics Laboratory), W.W. Craig (Lawrence Livermore National Laboratory), J. Hong (Harvard-Smithsonian Center for Astrophysics)
We report work on the gaseous antiparticle spectrometer (GAPS), a novel method for detecting antimatter. GAPS relies on detection of deexcitation X-rays produced when antimatter is slowed down and captured into excited states of gas molecules. The X-rays are a unique signature of the antimatter species. GAPS has high sensitivity for space-based detection of antideuterons which are produced in neutralino-neutralino interactions. We report on continued modeling of the GAPS performance and its sensitivity for neutralino searches, details of the prototype GAPS detector and plans for accelerator-based testing of GAPS with antiproton beams.
Bulletin of the American Astronomical Society,
© 2003. The American Astronomical Soceity.