A WIMP detector with two-phase liquid xenon
نویسندگان
چکیده
منابع مشابه
WIMP Searches with Liquid Xenon: the XENON10 Experiment
The XENON experiment searches for Weakly Interacting Massive Particles (WIMPs) with liquid xenon (LXe) as the active target. The detector is a 3-D position sensitive Time Projection Chamber optimized to simultaneously measure the ionization and scintillation produced by a recoil event down to energies of 16 keV. The distinct ratio of the two signals for nuclear recoils arising from WIMPs and ne...
متن کاملFirst limits on WIMP nuclear recoil signals in ZEPLIN-II: A two-phase xenon detector for dark matter detection
Results are presented from the first underground data run of ZEPLIN-II, a 31 kg two-phase xenon detector developed to observe nuclear recoils from hypothetical weakly interacting massive dark matter particles. Discrimination between nuclear recoils and background electron recoils is afforded by recording both the scintillation and ionisation signals generated within the liquid xenon, with the r...
متن کاملPerformance and Fundamental Processes at Low Energy in a Two-Phase Liquid Xenon Dark Matter Detector
We extend the study of the performance of a prototype two-phase liquid xenon WIMP dark matter detector to energies below 20 keV. We demonstrate a new method for obtaining the best estimate of the energy from events, show that fluctuations in recombination limit discrimination for most energies, and reveal a surprising improvement in discrimination below 20 keV, which is crucial for a high-sensi...
متن کاملPreparation of Neutron-activated Xenon for Liquid Xenon Detector Calibration
We report the preparation of neutron-activated xenon for the calibration of liquid xenon (LXe) detectors. Gamma rays from the decay of xenon metastable states, produced by fast neutron activation, were detected and their activities measured in a LXe scintillation detector. Following a five-day activation of natural xenon gas with a Cf (4× 10 n/s) source, the activities of two gamma ray lines at...
متن کاملTwo-Phase Xenon Time Projection Chambers for WIMP Searches and Other Applications
Astronomical evidence indicates that 23 % of the energy density in the universe is comprised of some form of non-standard, non-baryonic matter that has yet to be observed. One of the predominant theories is that dark matter consists of WIMPs (Weakly Interacting Massive Particles), so named because they do not interact electromagnetically or through the strong nuclear force. In direct dark matte...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2000
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(00)00649-6