HPGS-A Sensitive Dark Matter Detector Using High Pressure Xe Gas at Room Temperature

Details HPGS-A Sensitive Dark Matter Detector Using High Pressure Xe Gas at Room Temperature HPGS-A Sensitive Dark Matter Detector Using High Pressure Xe Gas at Room Temperature

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1166..236m&link_type=abstract

SOURCES AND DETECTION OF DARK MATTER AND DARK ENERGY IN THE UNIVERSE: Proceedings of the 8th UCLA Symposium. AIP Conference Pro

Physics

Dark Matter, Scintillation Detectors, Background Radiations

Scientific paper

We propose a dark matter detector based on scintillation in Xe gas at 5-10 bar pressure. Scintillation pulses are a factor 10 longer for alpha pulses than gamma pulses, and measurements in progress using neutron scattering indicate that the same difference applies to nuclear recoils, giving a 1E-6 rejection factor for electron recoil background. Light collection and background calculations indicate that dark matter sensitivity levels 1e-9 pb to 1E-10 pb would be achievable. Room temperature operation would enable Xe gas experiments >1 ton to be built at lower cost than current designs using liquid noble gases.

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