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arXiv · 1505.04666

Energy resolution and efficiency of phonon-mediated Kinetic Inductance Detectors for light detection

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

The development of sensitive cryogenic light detectors is of primary interest for bolometric experiments searching for rare events like dark matter interactions or neutrino-less double beta decay. Thanks to their good energy resolution and the natural multiplexed read-out, Kinetic Inductance Detectors (KIDs) are particularly suitable for this purpose. To efficiently couple KIDs-based light detectors to the large crystals used by the most advanced bolometric detectors, active surfaces of several cm$^2$ are needed. For this reason, we are developing phonon-mediated detectors. In this paper we present the results obtained with a prototype consisting of four 40 nm thick aluminum resonators patterned on a 2$\times$2 cm$^2$ silicon chip, and calibrated with optical pulses and X-rays. The detector features a noise resolution $\sigma_E=154\pm7$ eV and an (18$\pm$2)$\%$ efficiency.

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L. Cardani, I. Colantoni, A. Cruciani, S. Di Domizio, M. Vignati, F. Bellini, N. Casali, M. G. Castellano, A. Coppolecchia, C. Cosmelli, C. Tomei. 2015-05-18. Energy resolution and efficiency of phonon-mediated Kinetic Inductance Detectors for light detection. https://doi.org/10.1063/1.4929977

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