KIP publications

year 2018
author(s) S. Kempf, A. Fleischmann, L. Gastaldo, C. Enss
title Physics and Applications of Metallic Magnetic Calorimeters
KIP-Nummer HD-KIP 18-31
KIP-Gruppe(n) F3,F4,F5,ECHO
document type Paper
Keywords Metallic magnetic calorimeters, Low-temperature detectors, Microcalorimeters
source J. Low Temp. Phys. 193, 365 (2018)
doi 10.1007/s10909-018-1891-6
Abstract (en)

Metallic magnetic calorimeters (MMCs) are calorimetric low-temperature particle detectors that are currently strongly advancing the state of the art in energy- dispersive single particle detection. They are typically operated at temperatures below 100 mK and make use of a metallic, paramagnetic temperature sensor to transduce the temperature rise of the detector upon the absorption of an energetic particle into a change of magnetic flux which is sensed by a superconducting quantum interference device. This outstanding interplay between a high-sensitivity thermometer and a near quantum-limited amplifier results in a very fast signal rise time, an excellent energy resolution, a large dynamic range, a quantum efficiency close to 100% as well as an almost ideal linear detector response. For this reason, a growing number of groups located all over the world is developing MMC arrays of various sizes which are rou- tinely used in a variety of applications. Within this paper, we briefly review the state of the art of metallic magnetic calorimeters. This includes a discussion of the detection principle, sensor materials and detector geometries, readout concepts, the structure of modern detectors as well as the state-of-the-art detector performance.

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