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Title: Energy resolution and efficiency of phonon-mediated kinetic inductance detectors for light detection

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{sup 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 × 2 cm{sup 2} silicon chip, and calibrated with optical pulses and X-rays. The detector features a noise resolution σ{sub E} = 154 ± 7 eV and an (18 ± 2)% efficiency.
Authors:
 [1] ;  [2] ; ;  [1] ; ; ; ; ;  [1] ;  [3] ;  [4] ;  [3] ;  [5] ;  [6]
  1. Dipartimento di Fisica, Sapienza Università di Roma, Piazzale Aldo Moro 2, 00185 Roma (Italy)
  2. (United States)
  3. (Italy)
  4. Dipartimento di Fisica, Università degli Studi di Genova, Via Dodecaneso 33, 16146 Genova (Italy)
  5. Istituto di Fotonica e Nanotecnologie - CNR, Via Cineto Romano 42, 00156 Roma (Italy)
  6. INFN - Sezione di Roma, Piazzale Aldo Moro 2, 00185 Roma (Italy)
Publication Date:
OSTI Identifier:
22489213
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM; BOLOMETERS; CRYSTALS; DETECTION; DOUBLE BETA DECAY; EFFICIENCY; ENERGY RESOLUTION; INDUCTANCE; NOISE; NONLUMINOUS MATTER; PHONONS; READOUT SYSTEMS; RESONATORS; SILICON; SURFACES; VISIBLE RADIATION; X RADIATION