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Open Access Publications from the University of California

Calibration of a two-phase xenon time projection chamber with a 37Ar source

  • Author(s): Boulton, EM
  • Bernard, E
  • Destefano, N
  • Edwards, BNV
  • Gai, M
  • Hertel, SA
  • Horn, M
  • Larsen, NA
  • Tennyson, BP
  • Wahl, C
  • McKinsey, DN
  • et al.

© 2017 IOP Publishing Ltd and Sissa Medialab. We calibrate a two-phase xenon detector at 0.27 keV in the charge channel and at 2.8 keV in both the light and charge channels using a 37Ar source that is directly released into the detector. We map the light and charge yields as a function of electric drift field. For the 2.8 keV peak, we calculate the Thomas-Imel box parameter for recombination and determine its dependence on drift field. For the same peak, we achieve an energy resolution, Eσ/Emean, between 9.8% and 10.8% for 0.1 kV/cm to 2 kV/cm electric drift fields.

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