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1. Characterizing TES power noise for future single optical-phonon and infrared-photon detectors

Author

C. W. Fink, S. L. Watkins, T. Aramaki, P. L. Brink, S. Ganjam, B. A. Hines, M. E. Huber, N. A. Kurinsky, R. Mahapatra, N. Mirabolfathi, W. A. Page, R. Partridge, M. Platt, M. Pyle, B. Sadoulet, B. Serfass, and S. Zuber

Subjects
Physics, QC1-999
Abstract

In this letter, we present the performance of a 100 μm × 400 μm × 40 nm W Transition-Edge Sensor with a critical temperature of 40 mK. This device has a noise equivalent power of 1.5×10-18 W/Hz, in a bandwidth of 2.6 kHz, indicating a resolution for Dirac delta energy depositions of 40 ± 5 meV (rms). The performance demonstrated by this device is a critical step toward developing a O(100) meV threshold athermal phonon detector for low-mass dark matter searches.

Published
2020
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