Experimental Concept for a Precision Measurement of Nuclear Recoil Ionization Yields for Low Mass WIMP Searches

T. Saab*, E. Figueroa-Feliciano

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Understanding the response of dark matter detectors at the lowest recoil energies is important for correctly interpreting data from current experiments or predicting the sensitivity of future experiments to low mass weakly interacting massive particles. In particular, the ionization yield is essential for determining the correct recoil energy of candidate nuclear recoil events; however, few measurements in cryogenic crystals exist below 1 keV. Using the voltage-assisted calorimetric ionization detection technique with a mono-energetic neutron source, we show that it is possible to determine the ionization yield in cryogenic crystals down to an energy to 100 eV. This measurement will also determine the statistics of ionization production at these low energies.

Original languageEnglish (US)
Pages (from-to)316-322
Number of pages7
JournalJournal of Low Temperature Physics
Volume184
Issue number1-2
DOIs
StatePublished - Jul 1 2016

Keywords

  • Dark matter
  • High-voltage detectors
  • Ionization yield

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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