Large mass single electron resolution detector for dark matter and neutrino elastic interaction searches

V. Iyer, N. Mirabolfathi, G. Agnolet, H. Chen, A. Jastram, F. Kadribasic, V. K.S. Kashyap, A. Kubik, M. Lee, R. Mahapatra, B. Mohanty, H. Neog, M. Platt

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Large mass single electron resolution solid state detectors are desirable to search for low mass dark matter candidates and to measure coherent elastic neutrino nucleus scattering (CEνNS). Here, we present results from a novel 100 g phonon-mediated Si detector with a new interface architecture. This detector gives a baseline resolution of ∼1e∕h+ pair and a leakage current on the order of 10−16 A. This was achieved by removing the direct electrical contact between the Si crystal and the metallic electrode, and by increasing the phonon absorption efficiency of the sensors. The phonon signal amplification in the detector shows a linear increase while the signal to noise ratio improves with bias voltage, up to 240 V. This feature enables the detector to operate at a low energy threshold which is beneficial for dark matter and CEνNS like searches.

Original languageEnglish (US)
Article number165489
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume1010
DOIs
StatePublished - Sep 11 2021
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by DOE, USA grants de-sc0017859, de-sc0018981 and National Science Foundation (NSF) grant NSF OISE 1743790. We acknowledge the contribution of the key cryogenic infrastructure (Bluefors LD400) provided by NISER, India. We would also like to acknowledge the support of DAE, India through the project Research in Basic Sciences - Dark Matter and SERB-DST, India through the J.C. Bose fellowship. The authors are very thankful to the CDMS UC Berkeley group who shared their phonon readout analysis and processing code package. The authors are also very thankful to Mr. Jason Caswell whose assistance was instrumental in building the experimental setup. We would also like to thank Dr. Kartikeswar Senapati, Dr. Ranbir Singh and Mr. Sourav Kundu for helpful discussions.

Funding Information:
This work was supported by DOE, USA grants de-sc0017859 , de-sc0018981 and National Science Foundation (NSF) grant NSF OISE 1743790 . We acknowledge the contribution of the key cryogenic infrastructure (Bluefors LD400) provided by NISER, India. We would also like to acknowledge the support of DAE, India through the project Research in Basic Sciences - Dark Matter and SERB-DST, India through the J.C. Bose fellowship. The authors are very thankful to the CDMS UC Berkeley group who shared their phonon readout analysis and processing code package. The authors are also very thankful to Mr. Jason Caswell whose assistance was instrumental in building the experimental setup. We would also like to thank Dr. Kartikeswar Senapati, Dr. Ranbir Singh and Mr. Sourav Kundu for helpful discussions.

Publisher Copyright:
© 2021 Elsevier B.V.

Keywords

  • Dark matter
  • Low temperature
  • Low threshold
  • Neutrino coherent scattering
  • Phonon detectors

Fingerprint

Dive into the research topics of 'Large mass single electron resolution detector for dark matter and neutrino elastic interaction searches'. Together they form a unique fingerprint.

Cite this