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Time projection chamber for GADGET II

https://doi.org/10.1103/PhysRevC.110.035807

Mahajan, Ruchi; Wheeler, T.; Pollacco, E.; Wrede, C.; Adams, A.; Alvarez-Pol, H.; Andalib, A.; Anthony, A.; Ayyad, Y.; Bazin, D.; et al (September 2024, Physical Review C)
Evidence of Coherent Elastic Neutrino-Nucleus Scattering with COHERENT’s Germanium Array

https://doi.org/10.1103/PhysRevLett.134.231801

Adamski, S; Ahn, M; Barbeau, P S; Belov, V; Bernardi, I; Bock, C; Bolozdynya, A; Bouabid, R; Browning, J; Cabrera-Palmer, B; et al (June 2025, 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
Experimental study of the $^{34 m}$ Cl beam production at intermediate energies

https://doi.org/10.1016/j.nima.2022.166789

Shehu, O.A.; Crider, B.P.; Ginter, T.; Hoffman, C.R.; Ogunbeku, T.H.; Xiao, Y.; Childers, K.L.; Chowdhury, P.; Fry, C.; Lamere, E.; et al (July 2022, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment)

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First application of Markov chain Monte Carlo-based Bayesian data analysis to the Doppler-shift attenuation method

https://doi.org/10.1016/j.physletb.2023.137801

Sun, L.J.; Fry, C.; Davids, B.; Esker, N.; Wrede, C.; Alcorta, M.; Bhattacharjee, S.; Bowry, M.; Brown, B.A.; Budner, T.; et al (April 2023, Physics Letters B)

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Accessing new physics with an undoped, cryogenic CsI CEvNS detector for COHERENT at the SNS

https://doi.org/10.1103/PhysRevD.109.092005

Barbeau, P S; Belov, V; Bernardi, I; Bock, C; Bolozdynya, A; Bouabid, R; Browning, J; Cabrera-Palmer, B; Conley, E; da_Silva, V; et al (May 2024, 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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First Penning trap mass measurement of ${}^{36}{Ca}$

https://doi.org/10.1103/PhysRevC.103.014323

Surbrook, J.; Bollen, G.; Brodeur, M.; Hamaker, A.; Pérez-Loureiro, D.; Puentes, D.; Nicoloff, C.; Redshaw, M.; Ringle, R.; Schwarz, S.; et al (January 2021, Physical Review C)
null (Ed.)
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Measuring the ¹⁵ O(α, γ) ¹⁹ Ne reaction in Type I X-ray bursts using the GADGET II TPC: Hardware

https://doi.org/10.1051/epjconf/202226011046

Wheeler, Tyler; Adams, A.; Allmond, J.; Alvarez Pol, H.; Argo, E.; Ayyad, Y.; Bardayan, D.; Bazin, D.; Budner, T.; Chen, A.; et al (January 2022, EPJ Web of Conferences)
Liu, W.; Wang, Y.; Guo, B.; Tang, X.; Zeng, S. (Ed.)
Sensitivity studies have shown that the 15 O(α, γ) 19 Ne reaction is the most important reaction rate uncertainty affecting the shape of light curves from Type I X-ray bursts. This reaction is dominated by the 4.03 MeV resonance in 19 Ne. Previous measurements by our group have shown that this state is populated in the decay sequence of 20 Mg. A single 20 Mg(βp α) 15 O event through the key 15 O(α, γ) 19 Ne resonance yields a characteristic signature: the emission of a proton and alpha particle. To achieve the granularity necessary for the identification of this signature, we have upgraded the Proton Detector of the Gaseous Detector with Germanium Tagging (GADGET) into a time projection chamber to form the GADGET II detection system. GADGET II has been fully constructed, and is entering the testing phase.
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${}^{25}{Si} β^{+}$ -decay spectroscopy

https://doi.org/10.1103/PhysRevC.103.014322

Sun, L. J.; Friedman, M.; Budner, T.; Pérez-Loureiro, D.; Pollacco, E.; Wrede, C.; Brown, B. A.; Cortesi, M.; Fry, C.; Glassman, B. E.; et al (January 2021, Physical Review C)
null (Ed.)
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Constraining the ${}^{30}P (p, γ) {}^{31}S$ Reaction Rate in ONe Novae via the Weak, Low-Energy, $β$ -Delayed Proton Decay of ${}^{31}{Cl}$

https://doi.org/10.1103/PhysRevLett.128.182701

Budner, T.; Friedman, M.; Wrede, C.; Brown, B. A.; José, J.; Pérez-Loureiro, D.; Sun, L. J.; Surbrook, J.; Ayyad, Y.; Bardayan, D. W.; et al (May 2022, Physical Review Letters)
Low-energy ${}^{23}{Al} β$ -delayed proton decay and ${}^{22}{Na}$ destruction in novae

https://doi.org/10.1103/PhysRevC.101.052802

Friedman, M.; Budner, T.; Pérez-Loureiro, D.; Pollacco, E.; Wrede, C.; José, J.; Brown, B. A.; Cortesi, M.; Fry, C.; Glassman, B.; et al (May 2020, Physical Review C)

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