Phonon Quasidiffusion in Cryogenic Dark Matter Search Large Germanium Detectors

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We present results on quasidiffusion studies in large, 3 inch diameter, 1 inch thick [100] high purity germanium crystals, cooled to 50 mK in the vacuum of a dilution refrigerator, and exposed with 59.5 keV gamma-rays from an Am-241 calibration source. We compare data obtained in two different detector types, with different phonon sensor area coverage, with results from a Monte Carlo. The Monte Carlo includes phonon quasidiffusion and the generation of phonons created by charge carriers as they are drifted across the detector by ionization readout channels.

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13 pages

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Leman, S.W.; /MIT, MKI; Cabrera, B.; /Stanford U., Phys. Dept.; McCarthy, K.A.; /MIT, MKI et al. June 4, 2012.

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We present results on quasidiffusion studies in large, 3 inch diameter, 1 inch thick [100] high purity germanium crystals, cooled to 50 mK in the vacuum of a dilution refrigerator, and exposed with 59.5 keV gamma-rays from an Am-241 calibration source. We compare data obtained in two different detector types, with different phonon sensor area coverage, with results from a Monte Carlo. The Monte Carlo includes phonon quasidiffusion and the generation of phonons created by charge carriers as they are drifted across the detector by ionization readout channels.

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13 pages

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  • Journal Name: Chinese Journal of Physics; Journal Volume: 49; Journal Issue: 1

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  • Report No.: SLAC-PUB-15012
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 1042686
  • Archival Resource Key: ark:/67531/metadc832836

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  • June 4, 2012

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Dec. 12, 2016, 6:50 p.m.

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Leman, S.W.; /MIT, MKI; Cabrera, B.; /Stanford U., Phys. Dept.; McCarthy, K.A.; /MIT, MKI et al. Phonon Quasidiffusion in Cryogenic Dark Matter Search Large Germanium Detectors, article, June 4, 2012; United States. (digital.library.unt.edu/ark:/67531/metadc832836/: accessed May 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.