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Title: The DarkSide physics program and its recent results

Here, DarkSide (DS) at Gran Sasso underground laboratory is a direct Dark Matter search program based on Time Projection Chambers (TPC) with liquid Argon from underground sources. The DarkSide-50 (DS-50) TPC, with 150 kg of Argon is installed inside active neutron and muon detectors. DS-50 has been taking data since November 2013 with Atmospheric Argon (AAr) and since April 2015 with Underground Argon (UAr), depleted in radioactive 39Ar by a factor ~1400. The exposure of 1422 kg d of AAr has demonstrated that the operation of DS-50 for three years in a background free condition is a solid reality, thanks to the superb performance of the Pulse Shape Analysis. The first release of results from an exposure of 2616 kg d of UAr has shown no candidate Dark Matter events. We have set the best limit for Spin-Independent elastic nuclear scattering of WIMPs obtained by Argon-based detectors, corresponding to a cross-section of 2 10 –44 cm 2 at a WIMP mass of 100 GeV. We present the detector design and performance, the results from the AAr run and the first results from the UAr run and we briefly introduce the future of the DarkSide program.
Authors:
 [1]
  1. Univ. degli Studi, Milano (Italy); Istituto Nazionale di Fisica Nuclear - Sezione di Milano, Milano (Italy). et al.
Publication Date:
Report Number(s):
FERMILAB-CONF-16-666-E
Journal ID: ISSN 2037-4909; 1514389; TRN: US1700991
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Il Nuovo Cimento. C
Additional Journal Information:
Journal Volume: C39; Journal Issue: 4; Journal ID: ISSN 2037-4909
Publisher:
Societa italiana di fisica
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS
OSTI Identifier:
1350510

D'Angelo, D. The DarkSide physics program and its recent results. United States: N. p., Web. doi:10.1393/ncc/i2016-16312-0.
D'Angelo, D. The DarkSide physics program and its recent results. United States. doi:10.1393/ncc/i2016-16312-0.
D'Angelo, D. 2017. "The DarkSide physics program and its recent results". United States. doi:10.1393/ncc/i2016-16312-0. https://www.osti.gov/servlets/purl/1350510.
@article{osti_1350510,
title = {The DarkSide physics program and its recent results},
author = {D'Angelo, D.},
abstractNote = {Here, DarkSide (DS) at Gran Sasso underground laboratory is a direct Dark Matter search program based on Time Projection Chambers (TPC) with liquid Argon from underground sources. The DarkSide-50 (DS-50) TPC, with 150 kg of Argon is installed inside active neutron and muon detectors. DS-50 has been taking data since November 2013 with Atmospheric Argon (AAr) and since April 2015 with Underground Argon (UAr), depleted in radioactive 39Ar by a factor ~1400. The exposure of 1422 kg d of AAr has demonstrated that the operation of DS-50 for three years in a background free condition is a solid reality, thanks to the superb performance of the Pulse Shape Analysis. The first release of results from an exposure of 2616 kg d of UAr has shown no candidate Dark Matter events. We have set the best limit for Spin-Independent elastic nuclear scattering of WIMPs obtained by Argon-based detectors, corresponding to a cross-section of 2 10–44 cm2 at a WIMP mass of 100 GeV. We present the detector design and performance, the results from the AAr run and the first results from the UAr run and we briefly introduce the future of the DarkSide program.},
doi = {10.1393/ncc/i2016-16312-0},
journal = {Il Nuovo Cimento. C},
number = 4,
volume = C39,
place = {United States},
year = {2017},
month = {1}
}