학술논문

Identifying Drivers of Energy Resolution Variation in a Multi-KID Phonon-Mediated Detector.
Document Type
Article
Source
Journal of Low Temperature Physics. Nov2022, Vol. 209 Issue 3/4, p457-463. 7p.
Subject
*PARTICLE detectors
*DETECTORS
*QUALITY factor
*DARK matter
*ELECTRIC inductance
Language
ISSN
0022-2291
Abstract
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. [ABSTRACT FROM AUTHOR]