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

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Published 4 August 2017 • © 2017 IOP Publishing Ltd and Sissa Medialab
, , Citation E.M. Boulton et al 2017 JINST 12 P08004 DOI 10.1088/1748-0221/12/08/P08004

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Author affiliations

1 Department of Physics, Yale University, 217 Prospect St., New Haven CT 06511, U.S.A.

2 Department of Physics, University of California Berkeley, 366 LeConte Hall, Berkeley, CA 94720, U.S.A.

3 Physics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, U.S.A.

4 LNS at Avery Point, University of Connecticut, 1084 Shennecossett Rd., Groton, CT 06340, U.S.A.

Dates

  1. Received 26 June 2017
  2. Accepted 22 July 2017
  3. Published

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1748-0221/12/08/P08004

Abstract

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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