Journal of Low Temperature Physics

, Volume 93, Issue 3–4, pp 761–766 | Cite as

Data acquisition system for dark matter detectors

  • Igor R. Sagdeev
  • Andrzej K. Drukier
  • Dan J. Welsh
Assorted Topics


Progress in Ge detector technology has resulted in ultralow backgrounds of less than 0.3 counts keV−1 kg−1 d−1 at energies between 5 and 12 keV, and less than 1.0 counts kev−1 kg−1 d−1 for energies between 3 and 5 keV. Coupled with good energy resolution, 0.4 keV FWHM at 10 keV, this allows searches for DM particles with m ≥8 GeV/c2.

Electromagnetic interference and acoustical pick-up are the main sources of background in the best Ge detectors. These problems are even more important in cryogenic WIMP detectors under development. A PC-based on line pulse shape analysis system is presented which permits rejection of about 95% percent of the EMI/ acoustical background. The hardware uses a low cost, commercially available digital storage oscilloscope. The software consists of about 20,000 lines of code in Pascal and assembly language. We tested this system using a low radioactive background Ge-system on the Earth's surface. For low energy events (27 keV photons) this system permits improvement in the background from 0.1 cpm to 2 cpd.


Dark Matter Assembly Language Storage Oscilloscope Matter Detector Digital Storage Oscilloscope 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Plenum Publishing Corporation 1993

Authors and Affiliations

  • Igor R. Sagdeev
    • 1
  • Andrzej K. Drukier
    • 1
    • 2
  • Dan J. Welsh
    • 1
  1. 1.Department of PhysicsUniversity of South CarolinaColumbiaUSA
  2. 2.also, BioTraces Inc.GreenbeltUSA

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