Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2005-03-09
Nucl.Instrum.Meth. A546 (2005) 509-522
Physics
High Energy Physics
High Energy Physics - Experiment
27 pages (total, including 3 tables and 11 figures). Accepted for publication in Nuclear Instruments and Methods in Physics Re
Scientific paper
10.1016/j.nima.2005.03.121
Presented here are results of simulations of neutron background performed for a time projection chamber acting as a particle dark matter detector in an underground laboratory. The investigated background includes neutrons from rock and detector components, generated via spontaneous fission and (alpha, n) reactions, as well as those due to cosmic-ray muons. Neutrons were propagated to the sensitive volume of the detector and the nuclear recoil spectra were calculated. Methods of neutron background suppression were also examined and limitations to the sensitivity of a gaseous dark matter detector are discussed. Results indicate that neutrons should not limit sensitivity to WIMP-nucleon interactions down to a level of (1 - 3) x 10^{-8} pb in a 10 kg detector.
Carson J. M.
Davies Ceri J.
Daw Edward
Hollingworth R. J.
Kirkpatrick Jessica A.
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