ArDM: a ton-scale LAr detector for direct Dark Matter searches

The Argon Dark Matter (ArDM-1t) experiment is a ton-scale liquid argon (LAr) double-phase time projection chamber designed for direct Dark Matter searches. Such a device allows to explore the low energy frontier in LAr with a charge imaging detector. The ionization charge is extracted from the liqui...

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Bibliographic Details
Published in:Journal of physics. Conference series 2011-01, Vol.308 (1), p.12006-11
Main Authors: Marchionni, A, Amsler, C, Badertscher, A, Boccone, V, Bueno, A, Carmona-Benitez, M C, Coleman, J, Creus, W, Curioni, A, Daniel, M, Dawe, E J, Degunda, U, Gendotti, A, Epprecht, L, Horikawa, S, Kaufmann, L, Knecht, L, Laffranchi, M, Lazzaro, C, Lightfoot, P K, Lussi, D, Lozano, J, Mavrokoridis, K, Melgarejo, A, Mijakowski, P, Natterer, G, Navas-Concha, S, Otyugova, P, Prado, M de, Przewlocki, P, Regenfus, C, Resnati, F, Robinson, M, Rochet, J, Romero, L, Rondio, E, Rubbia, A, Scotto-Lavina, L, Spooner, N J C, Strauss, T, Touramanis, C, Ulbricht, J, Viant, T
Format: Article
Language:English
Subjects:
Argon
Charge
Dark matter
Detectors
Devices
Ionization
Liquids
Neutrinos
Photomultiplier tubes
Physics
Radiation counters
Searching
Sensors
Vapor phases
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Summary:The Argon Dark Matter (ArDM-1t) experiment is a ton-scale liquid argon (LAr) double-phase time projection chamber designed for direct Dark Matter searches. Such a device allows to explore the low energy frontier in LAr with a charge imaging detector. The ionization charge is extracted from the liquid into the gas phase and there amplified by the use of a Large Electron Multiplier in order to reduce the detection threshold. Direct detection of the ionization charge with fine spatial granularity, combined with a measurement of the amplitude and time evolution of the associated primary scintillation light, provide powerful tools for the identification of WIMP interactions against the background due to electrons, photons and possibly neutrons if scattering more than once. A one ton LAr detector is presently installed on surface at CERN to fully test all functionalities and it will be soon moved to an underground location. We will emphasize here the lessons learned from such a device for the design of a large LAr TPC for neutrino oscillation, proton decay and astrophysical neutrinos searches.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/308/1/012006