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Identifying drivers of energy resolution variation in multi-KID phonon-mediated detectors

Ramanathan, K. and Aralis, T. and Thakur, R. Basu and Bumble, B. and Chang, Y.-Y. and Wen, O. and Golwala, S. R. (2021) Identifying drivers of energy resolution variation in multi-KID phonon-mediated detectors. . (Unpublished)

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Phonon-mediated particle detectors employing Kinetic Inductance Detectors (KIDs) on Silicon substrates have demonstrated both O(10) eV energy resolution and mm position resolution, making them strong candidates for instrumenting next generation rare-event experiments such as in looking for dark matter or in neutrino measurements. Previous work has demonstrated the performance of an 80-KID array on a Si wafer, however current energy resolution measurements show a 25x difference between otherwise identical KIDs on the same wafer - between 5 to 125 eV on energy absorbed by the KID. Here, we use a first principles approach and attempt to identify the drivers behind the resolution 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 terms as the likely culprit for the observed variation.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Chang, Y.-Y.0000-0002-6441-980X
Golwala, S. R.0000-0002-1098-7174
Additional Information:Attribution 4.0 International (CC BY 4.0) 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
Record Number:CaltechAUTHORS:20211213-225003442
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:112389
Deposited By: George Porter
Deposited On:14 Dec 2021 03:01
Last Modified:02 Jun 2023 01:20

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