Table-top neutron source for characterization and calibration of dark matter detectors

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Neutron Sources, Neutrino, Muon, Pion, And Other Elementary Particle Detectors, Cosmic Ray Detectors, Gas-Filled Counters: Ionization Chambers, Proportional, And Avalanche Counters, Scintillation Detectors, Other Particles

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A table-top plasma focus device is shown to be an ideal neutron source for the calibration and characterization of dark matter detectors and has been optimized to produce a maximum yield of 2.0×107 neutrons per shot. The interaction of energetic neutrons is similar to that expected from weakly interacting massive particles (WIMPs)-a favored candidate for the dominant component of dark matter in the universe. The weak interaction of a neutron with liquid xenon gas was measured in a prototype xenon two-phase detector. We have developed a detector system in which both the primary scintillation and ionization from the initial interaction can be detected. Both measurements are critical for identifying WIMP's.

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