Performance of a Phonon-Mediated Detector Using KIDs Optimized for Sub-GeV Dark Matter

O. Wen; T. Aralis; R. Basu Thakur; B. Bumble; Y. Y. Chang; K. Ramanathan; S. R. Golwala

doi:10.1007/s10909-022-02764-2

Performance of a Phonon-Mediated Detector Using KIDs Optimized for Sub-GeV Dark Matter

O. Wen, T. Aralis, R. Basu Thakur, B. Bumble, Y. Y. Chang, K. Ramanathan, S. R. Golwala

Department of Physics

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

3 Scopus citations

Abstract

We provide an update on a gram-scale phonon-mediated KID-based device that was designed for a sub-GeV dark matter search at the Northwestern Experimental Underground Site. Currently, the device is demonstrating 6 eV resolution on the energy absorbed by the resonator. With some important assumptions, this translates to 20 eV baseline resolution on energy deposited in the substrate. We show that TLS noise dominates this energy resolution estimate. After modifying the design to mitigate TLS noise, we project 5 eV baseline resolution on energy deposited in the substrate (1.5 eV on energy absorbed by the resonator) for an amplifier-white-noise-dominated device. Finally, we present a clear path forward to sub-eV resolutions, which includes installation of a quantum-limited superconducting parametric amplifier and adjustments to the material makeup of our resonators.

Original language	English
Pages (from-to)	510-517
Number of pages	8
Journal	Journal of Low Temperature Physics
Volume	209
Issue number	3-4
DOIs	https://doi.org/10.1007/s10909-022-02764-2
State	Published - Nov 2022

Keywords

Dark matter
Kinetic inductance detectors
Phonons
Two-level system noise

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10.1007/s10909-022-02764-2

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title = "Performance of a Phonon-Mediated Detector Using KIDs Optimized for Sub-GeV Dark Matter",

abstract = "We provide an update on a gram-scale phonon-mediated KID-based device that was designed for a sub-GeV dark matter search at the Northwestern Experimental Underground Site. Currently, the device is demonstrating 6 eV resolution on the energy absorbed by the resonator. With some important assumptions, this translates to 20 eV baseline resolution on energy deposited in the substrate. We show that TLS noise dominates this energy resolution estimate. After modifying the design to mitigate TLS noise, we project 5 eV baseline resolution on energy deposited in the substrate (1.5 eV on energy absorbed by the resonator) for an amplifier-white-noise-dominated device. Finally, we present a clear path forward to sub-eV resolutions, which includes installation of a quantum-limited superconducting parametric amplifier and adjustments to the material makeup of our resonators.",

keywords = "Dark matter, Kinetic inductance detectors, Phonons, Two-level system noise",

author = "O. Wen and T. Aralis and {Basu Thakur}, R. and B. Bumble and Chang, {Y. Y.} and K. Ramanathan and Golwala, {S. R.}",

note = "Publisher Copyright: {\textcopyright} 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.",

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doi = "10.1007/s10909-022-02764-2",

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volume = "209",

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AU - Wen, O.

AU - Aralis, T.

AU - Basu Thakur, R.

AU - Bumble, B.

AU - Chang, Y. Y.

AU - Ramanathan, K.

AU - Golwala, S. R.

PY - 2022/11

Y1 - 2022/11

N2 - We provide an update on a gram-scale phonon-mediated KID-based device that was designed for a sub-GeV dark matter search at the Northwestern Experimental Underground Site. Currently, the device is demonstrating 6 eV resolution on the energy absorbed by the resonator. With some important assumptions, this translates to 20 eV baseline resolution on energy deposited in the substrate. We show that TLS noise dominates this energy resolution estimate. After modifying the design to mitigate TLS noise, we project 5 eV baseline resolution on energy deposited in the substrate (1.5 eV on energy absorbed by the resonator) for an amplifier-white-noise-dominated device. Finally, we present a clear path forward to sub-eV resolutions, which includes installation of a quantum-limited superconducting parametric amplifier and adjustments to the material makeup of our resonators.

AB - We provide an update on a gram-scale phonon-mediated KID-based device that was designed for a sub-GeV dark matter search at the Northwestern Experimental Underground Site. Currently, the device is demonstrating 6 eV resolution on the energy absorbed by the resonator. With some important assumptions, this translates to 20 eV baseline resolution on energy deposited in the substrate. We show that TLS noise dominates this energy resolution estimate. After modifying the design to mitigate TLS noise, we project 5 eV baseline resolution on energy deposited in the substrate (1.5 eV on energy absorbed by the resonator) for an amplifier-white-noise-dominated device. Finally, we present a clear path forward to sub-eV resolutions, which includes installation of a quantum-limited superconducting parametric amplifier and adjustments to the material makeup of our resonators.

KW - Dark matter

KW - Kinetic inductance detectors

KW - Phonons

KW - Two-level system noise

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ER -

Performance of a Phonon-Mediated Detector Using KIDs Optimized for Sub-GeV Dark Matter

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Keywords

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