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Creators/Authors contains: "Visser, G"

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  1. ; ; ; ; ; ; ; ; ; ; et al (, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment)
    Free, publicly-accessible full text available March 1, 2026
  2. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review Letters)
    We report the first detection of coherent elastic neutrino-nucleus scattering (CEvNS) on natural germanium, measured at the Spallation Neutron Source at Oak Ridge National Laboratory. The Ge-Mini detector of the COHERENT collaboration employs large-mass, low-noise, high-purity germanium spectrometers, enabling excellent energy resolution, and an analysis threshold of 1.5 keV electron-equivalent ionization energy. We observe an on-beam excess of 20.6 − 6.3 + 7.1 counts with a total exposure of 10.22 GWhkg, and we reject the no-CEvNS hypothesis with 3.9 σ significance. The result agrees with the predicted standard model of particle physics signal rate within 2 σ . Published by the American Physical Society2025 
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    Free, publicly-accessible full text available June 1, 2026
  3. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review D)
    We consider the potential for a 10 kg undoped cryogenic CsI detector operating at the Spallation Neutron Source to measure coherent elastic neutrino-nucleus scattering and its sensitivity to discover new physics beyond the standard model (BSM). Through a combination of increased event rate, lower threshold, and good timing resolution, such a detector would significantly improve on past measurements. We considered tests of several BSM scenarios such as neutrino nonstandard interactions and accelerator-produced dark matter. This detector’s performance was also studied for relevant questions in nuclear physics and neutrino astronomy, namely the weak charge distribution of Cs and I nuclei and detection of neutrinos from a core-collapse supernova. Published by the American Physical Society2024 
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  4. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review Letters)
  5. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review D)
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  6. ; ; ; ; ; ; ; ; ; ; et al (, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment)
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  7. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review Letters)
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  8. ; ; ; ; ; ; ; ; ; ; et al (, Journal of Instrumentation)
    Abstract We present results of several measurements of CsI[Na] scintillation response to 3–60 keV energy nuclear recoils performed by the COHERENT collaboration using tagged neutron elastic scattering experiments and an endpoint technique. Earlier results, used to estimate the coherent elastic neutrino-nucleus scattering (CEvNS) event rate for the first observation of this process achieved by COHERENT at the Spallation Neutron Source (SNS), have been reassessed. We discuss corrections for the identified systematic effects and update the respective uncertainty values. The impact of updated results on future precision tests of CEvNS is estimated. We scrutinize potential systematic effects that could affect each measurement. In particular we confirm the response of the H11934-200 Hamamatsu photomultiplier tube (PMT) used for the measurements presented in this study to be linear in the relevant signal scale region. 
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  9. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review Letters)
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  10. ; ; ; ; ; ; ; ; ; ; et al (, Physical Review D)
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