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Identifying Drivers of Energy Resolution Variation in a Multi-KID Phonon-Mediated Detector

Ramanathan, Karthik and Aralis, Taylor and Basu Thakur, Ritoban and Bumble, Bruce and Chang, Yen-Yung and Wen, O. and Golwala, Sunil R. (2022) Identifying Drivers of Energy Resolution Variation in a Multi-KID Phonon-Mediated Detector. Journal of Low Temperature Physics . ISSN 0022-2291. doi:10.1007/s10909-022-02753-5. (In Press)

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Phonon-mediated Kinetic Inductance Detectors (KIDs) on silicon substrates have demonstrated both O(10) eV energy resolution and mm position resolution when used as particle detectors, making them strong candidates for instrumenting next-generation rare event experiments such as in looking for dark matter. Previous work has demonstrated the performance of an 80-KID array on a Si wafer; however, current energy resolution measurements show a ∼25× difference between otherwise identical KIDs—between 5 and 125 eV on energy absorbed by the KID. Here, we use a first principles approach and attempt to identify the drivers behind the variation. In particular, we analyze a subset of 8 KIDs using the unique approach of pulsing neighboring KIDs to generate signals in the target. We tentatively identify differences in quality factor as the likely culprit for the observed differences.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Ramanathan, Karthik0000-0003-4215-7834
Basu Thakur, Ritoban0000-0002-3351-3078
Chang, Yen-Yung0000-0002-6441-980X
Golwala, Sunil R.0000-0002-1098-7174
Additional Information:© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022. Received: 1 November 2021 / Accepted: 13 May 2022. We acknowledge the support of the following institutions and grants: NASA, NSTGRO 80NSSC20K1223; Department of Energy, DE-SC0011925F; Fermilab, LDRD Subcontract 672112.
Group:Astronomy Department
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0011925F
Fermi National Accelerator Laboratory672112
Subject Keywords:Kinetic inductance detector (KID) · Athermal phonon · Energy resolution · Low energy detector
Record Number:CaltechAUTHORS:20220608-849722000
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Official Citation:Ramanathan, K., Aralis, T., Basu Thakur, R. et al. Identifying Drivers of Energy Resolution Variation in a Multi-KID Phonon-Mediated Detector. J Low Temp Phys (2022).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115096
Deposited By: George Porter
Deposited On:08 Jun 2022 19:31
Last Modified:08 Jun 2022 19:31

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