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arXiv · 1705.04483

High-sensitivity Kinetic Inductance Detectors for CALDER

A. D'Addabbo·F. Bellini·L. Cardani·N. Casali·M. G. Castellano·I. Colantoni·C. Cosmelli·A. Cruciani·S. Di Domizio·M. Martinez·C. Tomei·M. Vignati
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Abstract

Providing a background discrimination tool is crucial for enhancing the sensitivity of next-generation experiments searching for neutrinoless double- beta decay. The development of high-sensitivity (< 20 eV RMS) cryogenic light detectors allows simultaneous read-out of the light and heat signals and enables background suppression through particle identification. The Cryogenic wide- Area Light Detector with Excellent Resolution (CALDER) R&D already proved the potential of this technique using the phonon-mediated Kinetic Inductance Detectors (KIDs) approach. The first array prototype with 4 Aluminum KIDs on a 2 $\times$ 2 cm2 Silicon substrate showed a baseline resolution of 154 $\pm$ 7 eV RMS. Improving the design and the readout of the resonator, the next CALDER prototype featured an energy resolution of 82 $\pm$ 4 eV, by sampling the same substrate with a single Aluminum KID.

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A. D'Addabbo, F. Bellini, L. Cardani, N. Casali, M. G. Castellano, I. Colantoni, C. Cosmelli, A. Cruciani, S. Di Domizio, M. Martinez, C. Tomei, M. Vignati. 2017-05-12. High-sensitivity Kinetic Inductance Detectors for CALDER. https://arxiv.org/abs/1705.04483

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