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Results from a Prototype TES Detector for the Ricochet Experiment

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arxiv 2304.14926 v2 pith:JMR4PZ7V submitted 2023-04-28 physics.ins-det

Results from a Prototype TES Detector for the Ricochet Experiment

classification physics.ins-det
keywords detectorsexperimentwillabsorberdetectorricochetarraybaseline
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Coherent elastic neutrino-nucleus scattering (CE$\nu$NS) offers valuable sensitivity to physics beyond the Standard Model. The Ricochet experiment will use cryogenic solid-state detectors to perform a precision measurement of the CE$\nu$NS spectrum induced by the high neutrino flux from the Institut Laue-Langevin nuclear reactor. The experiment will employ an array of detectors, each with a mass of $\sim$30 g and a targeted energy threshold of 50 eV. Nine of these detectors (the "Q-Array") will be based on a novel Transition-Edge Sensor (TES) readout style, in which the TES devices are thermally coupled to the absorber using a gold wire bond. We present initial characterization of a Q-Array-style detector using a 1 gram silicon absorber, obtaining a baseline root-mean-square resolution of less than 40 eV.

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  1. Searches for CE{\nu}NS and Physics beyond the Standard Model using Skipper-CCDs at CONNIE

    hep-ex 2024-03 unverdicted novelty 7.0

    CONNIE's first Skipper-CCD run at Angra-2 yields no CEνNS excess, comparable prior limits on neutrino rates, improved bounds on light vector mediators, and record surface DM-electron limits via diurnal modulation.