Overview

There is almost universal agreement that most of the mass in the Universe consists of dark matter. Many lines of reasoning suggest that the dark matter consists of a weakly interactive massive particle (WIMP) with mass ranging from 10 GeV/c2 to a few TeV/c2. Today, numerous experiments aim for direct or indirect dark matter detection. XENON10 is a direct detection experiment using a xenon dual phase time projection chamber. Particles interacting with xenon will create a scintillation signal (S1) and ionization. The charge produced is extracted into the gas phase and converted into a proportional scintillation light ( S2), with an external electric field. The dominant background, beta particles and gamma rays, will undergo an electron recoil (ER) interaction, while WIMPs and neutrons will undergo a nuclear recoil (NR) interaction. Event-by-event discrimination of background signals is based on log10( S2/S1)NR

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9781243715777

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