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Proceedings Paper

Superconducting kinetic inductance photon detectors
Author(s): Benjamin A. Mazin; Peter K. Day; Henry G. LeDuc; Anastasios Vayonakis; Jonas Zmuidzinas
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Paper Abstract

We are investigating a novel superconducting detector and readout method that could lead to photon counting, energy resolving focal plane arrays. This concept is intrinsically different from STJ and TES detectors, and in principle could deliver large pixel counts, high sensitivity, and Fano-limited spectral resolution in the optical/UV/X-ray bands. The readout uses the monotonic relation between the kinetic surface inductance Ls of a superconductor and the density of quasiparticles n, which holds even at temperatures far below Tc. This allows a sensitive readout of the number of excess quasiparticles in the detector by monitoring the transmission phase of a resonant circuit. The most intriguing aspect of this concept is that passive frequency multiplexing could be used to read out ~104 detectors with a single HEMT amplifier. Single x-ray events have been observed in prototype detectors.

Paper Details

Date Published: 18 December 2002
PDF: 11 pages
Proc. SPIE 4849, Highly Innovative Space Telescope Concepts, (18 December 2002); doi: 10.1117/12.460456
Show Author Affiliations
Benjamin A. Mazin, California Institute of Technology (United States)
Peter K. Day, Jet Propulsion Lab. (United States)
Henry G. LeDuc, Jet Propulsion Lab. (United States)
Anastasios Vayonakis, California Institute of Technology (United States)
Jonas Zmuidzinas, California Institute of Technology (United States)

Published in SPIE Proceedings Vol. 4849:
Highly Innovative Space Telescope Concepts
Howard A. MacEwen, Editor(s)

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