Measurement of low energy nuclear recoil events with the phonon-mediated voltage-assisted hybrid detector for rare event searches

S. Maludze, M. Mirzakhani, W. Baker, M. Lee, C. Savage, H. Neog, R. Mahapatra, N. Mirabolfathi, M. Platt, A. Jastram

Research output: Contribution to journalArticlepeer-review

Abstract

The phonon-mediated hybrid detector is made out of a monolithic silicon crystal characterized by two interconnected regions linked through a narrow neck. Operating solely on phonon signal measurements, the hybrid design facilitates the differentiation between electron recoil and nuclear recoil events, effectively discerning two types of interaction down to low energy levels. With a newly implemented software triggering technique (SWT), low-energy nuclear recoil events of approximately 500 eVee have been measured. In addition to this, a background reduction of up to 95% has been successfully demonstrated.

Original languageEnglish (US)
Article number169994
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume1070
DOIs
StatePublished - Jan 2025
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2024 Elsevier B.V.

Keywords

  • Cryogenic detector
  • Dark matter
  • Low energy nuclear recoil
  • Low temperature
  • Low threshold detector

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