High sensitivity phonon-mediated kinetic inductance detector with combined amplitude and phase read-out

Abstract

The development of wide-area cryogenic light detectors with good energy resolution is one of the priorities of next generation bolometric experiments searching for rare interactions, as the simultaneous read-out of the light and heat signals enables background suppression through particle identification. Among the proposed technological approaches for the phonon sensor, the naturally-multiplexed Kinetic Inductance Detectors (KIDs) stand out for their excellent intrinsic energy resolution and reproducibility. To satisfy the large surface requirement (several cm${}^2$) KIDs are deposited on an insulating substrate that converts the impinging photons into phonons. A fraction of phonons is absorbed by the KID, producing a signal proportional to the energy of the original photons. The potential of this technique was proved by the CALDER project, that reached a baseline resolution of 154$\pm$7 eV RMS by sampling a 2$\times$2 cm${}^2$ Silicon substrate with 4 Aluminum KIDs. In this paper we present a prototype of Aluminum KID with improved geometry and quality factor. The design improvement, as well as the combined analysis of amplitude and phase signals, allowed to reach a baseline resolution of 82$\pm$4 eV by sampling the same substrate with a single Aluminum KID.

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Cited by in corpus (14)

• Interplay between kinetic inductance, non-linearity and quasiparticle dynamics in granular aluminum MKIDs
• Phonon-trapping enhanced energy resolution in superconducting single photon detectors
• Low background techniques in bolometers for double-beta decay search
• Al/Ti/Al phonon-mediated KIDs for UV-VIS light detection over large areas
• Measurements and simulations of athermal phonon transmission from silicon absorbers to aluminium sensors
• Kinetic Inductance Detectors for the OLIMPO experiment: in--flight operation and performance
• The saga of neutrinoless double beta decay search with TeO2 thermal detectors
• BULLKID: Monolithic array of particle absorbers sensed by Kinetic Inductance Detectors
• Potentialities of the future technical improvements in the search of rare nuclear decays by bolometers
• Final results of CALDER: Kinetic inductance light detectors to search for rare events
• Phonon and light read out of a Li${}_2$MoO${}_4$ crystal with multiplexed kinetic inductance detectors
• Performance of a phonon-mediated detector using KIDs optimized for sub-GeV dark matter
• Germanium target sensed by phonon-mediated kinetic inductance detectors
• Granular Aluminum kinetic inductance nonlinearity