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ArDM, a 1t liquid argon detector for dark matter searches


Amsler, C (2009). ArDM, a 1t liquid argon detector for dark matter searches. In: The 2009 Europhysics Conference on High Energy Physics, Krakow, PL, 16 July 2009 - 22 July 2009.

Abstract

Weak Interacting Massive Particles (WIMPs) are prime candidates for the dark matter in the universe. The ArDM experiment consists of a 1t liquid argon detector to search for WIMPs interacting elastically with argon nuclei. Both scintillation light and ionization charge from nuclear
recoils are measured. The 128 nm light is reflected and shifted into the visible range by wavelength shifting foils and detected by 8" photomultipliers immersed in the liquid. The charge will be detected above the liquid surface by a double stage large electron multiplier. The detector is
being developed at CERN on the surface before being moved to an underground site. ArDM was filled for the first time in spring 2009 and operated for more than one month. Preliminary results lead to a light collection efficiency of about 0.3 photoelectrons / kev for nuclear recoils, which
shows that our goal of reaching a detection threshold of 30 keV can be achieved.

Abstract

Weak Interacting Massive Particles (WIMPs) are prime candidates for the dark matter in the universe. The ArDM experiment consists of a 1t liquid argon detector to search for WIMPs interacting elastically with argon nuclei. Both scintillation light and ionization charge from nuclear
recoils are measured. The 128 nm light is reflected and shifted into the visible range by wavelength shifting foils and detected by 8" photomultipliers immersed in the liquid. The charge will be detected above the liquid surface by a double stage large electron multiplier. The detector is
being developed at CERN on the surface before being moved to an underground site. ArDM was filled for the first time in spring 2009 and operated for more than one month. Preliminary results lead to a light collection efficiency of about 0.3 photoelectrons / kev for nuclear recoils, which
shows that our goal of reaching a detection threshold of 30 keV can be achieved.

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Additional indexing

Item Type:Conference or Workshop Item (Paper), refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Event End Date:22 July 2009
Deposited On:17 Feb 2011 21:46
Last Modified:07 Dec 2017 07:28
Publisher:Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Series Name:PoS - Proceedings of Science
ISSN:1824-8039
Official URL:http://pos.sissa.it/archive/conferences/084/110/EPS-HEP%202009_110.pdf
Related URLs:http://www.ifj.edu.pl/hep2009/ (Organisation)
http://pos.sissa.it/index.html (Publisher)

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