Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-12-05
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, 2 figures, Invited talk at the 6th International Workshop on the Identification of Dark Matter, September 2006, Islan
Scientific paper
The ArDM project aims at operating a large noble liquid detector to search for direct evidence of Weakly Interacting Massive Particles (WIMP) as Dark Matter in the universe. Background sources relevant to ton-scale liquid and gaseous argon detectors, such as neutrons from detector components, muon-induced neutrons and neutrons caused by radioactivity of rock, as well as the internal $^{39}Ar$ background, are studied with simulations. These background radiations are addressed with the design of an appropriate shielding as well as with different background rejection potentialities. Among them the project relies on event topology recognition, event localization, density ionization discrimination and pulse shape discrimination. Background rates, energy spectra, characteristics of the background-induced nuclear recoils in liquid argon, as well as the shielding performance and rejection performance of the detector are described.
Kaufmann L.
Rubbia Andre
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