Contribution to a conference proceedings/Internal Report

PUBDB-2015-05512

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png DarkSide-50: results from first argon run

D'Angelo, D. ; DarkSide Collaboration (Collaboration Author)

2014
Deutsches Elektronen-Synchrotron, DESY Hamburg

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2014-04/315

Report No.: arXiv:1501.03541

Abstract: DarkSide (DS) at Gran Sasso underground laboratory is a direct dark matter search program based on TPCs with liquid argon from underground sources. The DS-50 TPC, with 50\,kg of liquid argon is installed inside active neutron and muon detectors. DS-50 has been taking data since Nov 2013, collecting more than $10^7$ events with atmospheric argon. This data represents an exposure to the largest background, beta decays of $^{39}$Ar, comparable to the full 3\,y run of DS-50 with underground argon. When analysed with a threshold that would give a sensitivity in the full run of about $10^{-45}$ cm$^2$ at a WIMP mass of 100\,GeV, there is no $^{39}$Ar background observed. We present the detector design and performance, the results from the atmospheric argon run and plans for an upscale to a multi-ton detector along with its sensitivity.

Keyword(s): detector: design ; muon: detector ; WIMP: mass ; time projection chamber ; liquid argon ; sensitivity ; atmosphere ; background: radioactivity ; argon: semileptonic decay ; dark matter ; performance ; Gran Sasso ; n: detector

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)
2. LHC/CMS Experiment (CMS)
3. Uni Hamburg / Experimentalphysik (UNI/EXP)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. No specific instrument

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Book/Proceedings/Internal Report Schmidt, A. (Editor)>Extern* ; Sander, C. (Editor)DESY*
Proceedings, 20th International Conference on Particles and Nuclei (PANIC 14)
2014Panic2014, Panic2014, HamburgHamburg, Germany, 25 Aug 2014 - 29 Aug 20142014-08-252014-08-29 Hamburg : Deutsches Elektronen-Synchrotron, DESY 1-754 (2014) [10.3204/DESY-PROC-2014-04]2014     Files  Fulltext BibTeX | EndNote: XML, Text | RIS

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