Single electron–hole pair sensitive silicon detector with surface event discrimination

Ziqing Hong; Runze Ren; Noah Kurinsky; Enectali Figueroa-Feliciano; Lise Wills; Suhas Ganjam; Rupak Mahapatra; Nader Mirabolfathi; Brian Nebolsky; H. Douglas Pinckney; Mark Platt

doi:10.1016/j.nima.2020.163757

Single electron–hole pair sensitive silicon detector with surface event discrimination

Ziqing Hong, Runze Ren, Noah Kurinsky^*, Enectali Figueroa-Feliciano, Lise Wills, Suhas Ganjam, Rupak Mahapatra, Nader Mirabolfathi, Brian Nebolsky, H. Douglas Pinckney, Mark Platt

^*Corresponding author for this work

Physics and Astronomy

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9 Scopus citations

Abstract

We demonstrate single electron–hole pair resolution in a single-sided, contact-free 1 cm² by 1 mm thick Si crystal operated at 48 mK, with a baseline energy resolution of 3 eV. This crystal can be operated at voltages in excess of ±50 V, resulting in a measured charge resolution of 0.06 electron–hole pairs. The high aluminum coverage (∼70%) of this device allows for the discrimination of surface events and separation of events occurring near the center of the detector from those near the edge. We use this discrimination ability to show that non-quantized dark events seen in previous detectors of a similar design are likely dominated by charge leakage along the sidewall of the device.

Original language	English (US)
Article number	163757
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	963
DOIs	https://doi.org/10.1016/j.nima.2020.163757
State	Published - May 21 2020

Funding

ZH and RR are supported by National Science Foundation, USA Grant PHY-1809730. This document was prepared by NK using the resources of the Fermi National Accelerator Laboratory (Fermilab), a U.S. Department of Energy, Office of Science, HEP User Facility. Fermilab is managed by Fermi Research Alliance, LLC (FRA), acting under Contract No. DE-AC02-07CH11359. We thank Matt Pyle for the mask design for this device and discussions thereof, Blas Cabrera and Martin Huber for support in the electronics readout, Noemie Bastidon for her work in the preliminary design of our optical fiber setup and wirebonding, and SLAC for making available their computing resources.

Keywords

Dark matter
Low-threshold
Quantization
Silicon calorimeter

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nima.2020.163757

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Hong, Z., Ren, R., Kurinsky, N., Figueroa-Feliciano, E., Wills, L., Ganjam, S., Mahapatra, R., Mirabolfathi, N., Nebolsky, B., Pinckney, H. D., & Platt, M. (2020). Single electron–hole pair sensitive silicon detector with surface event discrimination. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 963, Article 163757. https://doi.org/10.1016/j.nima.2020.163757

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title = "Single electron–hole pair sensitive silicon detector with surface event discrimination",

abstract = "We demonstrate single electron–hole pair resolution in a single-sided, contact-free 1 cm2 by 1 mm thick Si crystal operated at 48 mK, with a baseline energy resolution of 3 eV. This crystal can be operated at voltages in excess of ±50 V, resulting in a measured charge resolution of 0.06 electron–hole pairs. The high aluminum coverage (∼70%) of this device allows for the discrimination of surface events and separation of events occurring near the center of the detector from those near the edge. We use this discrimination ability to show that non-quantized dark events seen in previous detectors of a similar design are likely dominated by charge leakage along the sidewall of the device.",

keywords = "Dark matter, Low-threshold, Quantization, Silicon calorimeter",

author = "Ziqing Hong and Runze Ren and Noah Kurinsky and Enectali Figueroa-Feliciano and Lise Wills and Suhas Ganjam and Rupak Mahapatra and Nader Mirabolfathi and Brian Nebolsky and Pinckney, {H. Douglas} and Mark Platt",

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year = "2020",

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doi = "10.1016/j.nima.2020.163757",

language = "English (US)",

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Hong, Z, Ren, R, Kurinsky, N, Figueroa-Feliciano, E, Wills, L, Ganjam, S, Mahapatra, R, Mirabolfathi, N, Nebolsky, B, Pinckney, HD & Platt, M 2020, 'Single electron–hole pair sensitive silicon detector with surface event discrimination', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 963, 163757. https://doi.org/10.1016/j.nima.2020.163757

Single electron–hole pair sensitive silicon detector with surface event discrimination. / Hong, Ziqing; Ren, Runze; Kurinsky, Noah et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 963, 163757, 21.05.2020.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Single electron–hole pair sensitive silicon detector with surface event discrimination

AU - Hong, Ziqing

AU - Ren, Runze

AU - Kurinsky, Noah

AU - Figueroa-Feliciano, Enectali

AU - Wills, Lise

AU - Ganjam, Suhas

AU - Mahapatra, Rupak

AU - Mirabolfathi, Nader

AU - Nebolsky, Brian

AU - Pinckney, H. Douglas

AU - Platt, Mark

PY - 2020/5/21

Y1 - 2020/5/21

N2 - We demonstrate single electron–hole pair resolution in a single-sided, contact-free 1 cm2 by 1 mm thick Si crystal operated at 48 mK, with a baseline energy resolution of 3 eV. This crystal can be operated at voltages in excess of ±50 V, resulting in a measured charge resolution of 0.06 electron–hole pairs. The high aluminum coverage (∼70%) of this device allows for the discrimination of surface events and separation of events occurring near the center of the detector from those near the edge. We use this discrimination ability to show that non-quantized dark events seen in previous detectors of a similar design are likely dominated by charge leakage along the sidewall of the device.

AB - We demonstrate single electron–hole pair resolution in a single-sided, contact-free 1 cm2 by 1 mm thick Si crystal operated at 48 mK, with a baseline energy resolution of 3 eV. This crystal can be operated at voltages in excess of ±50 V, resulting in a measured charge resolution of 0.06 electron–hole pairs. The high aluminum coverage (∼70%) of this device allows for the discrimination of surface events and separation of events occurring near the center of the detector from those near the edge. We use this discrimination ability to show that non-quantized dark events seen in previous detectors of a similar design are likely dominated by charge leakage along the sidewall of the device.

KW - Dark matter

KW - Low-threshold

KW - Quantization

KW - Silicon calorimeter

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JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

M1 - 163757

ER -

Single electron–hole pair sensitive silicon detector with surface event discrimination

Abstract

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