Position and energy-resolved particle detection using phonon-mediated microwave kinetic inductance detectors

B. Bumble; B. Cornell; D. C. Moore; H. G. LeDuc; J. Zmuidzinas; P. K. Day; S. R. Golwala

Position and energy-resolved particle detection using phonon-mediated microwave kinetic inductance detectors

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arxiv 1203.4549 v2 pith:5HRGFR5R submitted 2012-03-20 astro-ph.IM cond-mat.supr-conphysics.ins-det

Position and energy-resolved particle detection using phonon-mediated microwave kinetic inductance detectors

D. C. Moore , S. R. Golwala , B. Bumble , B. Cornell , P. K. Day , H. G. LeDuc , J. Zmuidzinas This is my paper

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keywords positiondetectiondetectorsparticledetectorenergy-resolvedinductancekinetic

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We demonstrate position and energy-resolved phonon-mediated detection of particle interactions in a silicon substrate instrumented with an array of microwave kinetic inductance detectors (MKIDs). The relative magnitude and delay of the signal received in each sensor allows the location of the interaction to be determined with < 1 mm precision at 30 keV. Using this position information, variations in the detector response with position can be removed, and an energy resolution of \sigma_E = 0.55 keV at 30 keV was measured. Since MKIDs can be fabricated from a single deposited film and are naturally multiplexed in the frequency domain, this technology can be extended to provide highly-pixelized athermal phonon sensors for ~1 kg scale detector elements. Such high-resolution, massive particle detectors would be applicable to next-generation rare-event searches such as the direct detection of dark matter, neutrinoless double-beta decay, or coherent neutrino-nucleus scattering.

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