Phonon-mediated high-voltage detector with background rejection for low-mass dark matter and reactor coherent neutrino scattering experiments

H. Neog, R. Mahapatra, N. Mirabolfathi, M. Platt, A. Jastram, G. Agnolet, H. Chen, B. Mohanty, A. Kubik

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We report the first demonstration of a phonon-mediated silicon detector technology that provides a primary phonon measurement in a low-voltage region, and a simultaneous indirect measurement of the ionization signal through Neganov–Trofimov–Luke amplification in a high voltage region, both in a monolithic crystal. We present characterization of charge and phonon transport between the two stages of the detector and the resulting background discrimination capability at low energies. This new detector technology has the potential to significantly enhance the sensitivity of dark matter and coherent neutrino scattering experiments beyond the capabilities of current technologies that have limited discrimination at low energies.

Original languageEnglish (US)
Article number166707
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume1033
DOIs
StatePublished - Jun 11 2022
Externally publishedYes

Bibliographical note

Funding Information:
This work was fully supported by Department of Energy (USA) grants DE-SC0017859 and DE-SC0018981 . We acknowledge the contribution of the key cryogenic infrastructure (Bluefors LD400) provided by NISER, India. BM would like to further acknowledge the support of Department of Atomic Energy (India) through project Research in Basic Sciences - Dark Matter and SERB-DST through J.C. Bose fellowship.

Funding Information:
The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Rupak Mahapatra reports financial support was provided by US Department of Energy.

Funding Information:
This work was fully supported by Department of Energy (USA) grants DE-SC0017859 and DE-SC0018981. We acknowledge the contribution of the key cryogenic infrastructure (Bluefors LD400) provided by NISER, India. BM would like to further acknowledge the support of Department of Atomic Energy (India) through project Research in Basic Sciences - Dark Matter and SERB-DST through J.C. Bose fellowship.

Publisher Copyright:
© 2022 Elsevier B.V.

Keywords

  • Background reduction
  • Coherent elastic neutrino–nucleus scattering
  • Cryogenic temperature
  • Dark matter
  • Phonon detectors

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