The DarkSide physics program and its recent results

D'Angelo, D.

doi:10.1393/ncc/i2016-16312-0

Title: The DarkSide physics program and its recent results

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Abstract

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.

Authors:

D'Angelo, D. ^[1]

Univ. degli Studi, Milano (Italy); Istituto Nazionale di Fisica Nuclear - Sezione di Milano, Milano (Italy). et al.

Publication Date:: Thu Jan 12 00:00:00 EST 2017

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)

OSTI Identifier:: 1350510

Report Number(s):: FERMILAB-CONF-16-666-E
Journal ID: ISSN 2037-4909; 1514389; TRN: US1700991

Grant/Contract Number:: AC02-07CH11359

Resource 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

Country of Publication:: United States

Language:: English

Subject:: 79 ASTRONOMY AND ASTROPHYSICS

Citation Formats


                    D'Angelo, D. The DarkSide physics program and its recent results.  United States: N. p., 2017. 
Web.  doi:10.1393/ncc/i2016-16312-0.

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                    D'Angelo, D. The DarkSide physics program and its recent results.  United States.  https://doi.org/10.1393/ncc/i2016-16312-0

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                    D'Angelo, D. Thu .  
"The DarkSide physics program and its recent results".  United States.  https://doi.org/10.1393/ncc/i2016-16312-0.  https://www.osti.gov/servlets/purl/1350510.

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@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         = {Thu Jan 12 00:00:00 EST 2017},

  month        = {Thu Jan 12 00:00:00 EST 2017}

}

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