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Title: DAMIC at SNOLAB

We introduce the fully-depleted charge-coupled device (CCD) as a particle detector. We demonstrate its low energy threshold operation, capable of detecting ionizing energy depositions in a single pixel down to 50 eVee. We present results of energy calibrations from 0.3 keVee to 60 keVee, showing that the CCD is a fully active detector with uniform energy response throughout the silicon target, good resolution (Fano ~0.16), and remarkable linear response to electron energy depositions. We show the capability of the CCD to localize the depth of particle interactions within the silicon target. We discuss the mode of operation and unique imaging capabilities of the CCD, and how they may be exploited to characterize and suppress backgrounds. We present the first results from the deployment of 250 μm thick CCDs in SNOLAB, a prototype for the upcoming DAMIC100. DAMIC100 will have a target mass of 0.1 kg and should be able to directly test the CDMS-Si signal within a year of operation.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [2] ;  [3] ;  [2] ;  [2] ;  [2] ;  [6] ;  [4] ;  [6] ;  [7] ;  [1] ;  [3] ;  [3] ;  [2] ;  [4] ;  [5] more »;  [3] ;  [1] « less
  1. Univ. of Chicago, IL (United States). Kavli Inst. for Cosmological Physics (KICP) and Enrico Fermi Inst.
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  3. Univ. Nacional Autonama de Mexico (Mexico)
  4. Univ. of Michigan, Ann Arbor, MI (United States)
  5. Comision Nacional de Energia Atomica (CNEA), Rio Negro (Argentina). Centro Atomico Bariloche (CAB)
  6. Univ. of Zurich (Switzerland)
  7. Univ. Nacional de Asuncion (Paraguay)
Publication Date:
OSTI Identifier:
1213681
Grant/Contract Number:
NSF PHY-1125897
Type:
Accepted Manuscript
Journal Name:
Physics Procedia
Additional Journal Information:
Journal Volume: 61; Journal Issue: C; Journal ID: ISSN 1875-3892
Publisher:
Elsevier
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY DAMIC; dark matter direct detection; low-mass WIMPs; low-threshold detectors; charge-coupled devices