Publications (26)
Measurement of neutron-proton capture in the SNO+ water phase
The SNO+ Collaboration, :, M. R. Anderson +130
The SNO+ experiment collected data as a low-threshold water Cherenkov detector from September 2017 to July 2019. Measurements of the 2.2-MeV produced by neutron capture on hyd…
Measurement of the B Solar Neutrino Flux in SNO+ with Very Low Backgrounds
The SNO+ Collaboration, :, M. Anderson +120
A measurement of the B solar neutrino flux has been made using a 69.2 kt-day dataset acquired with the SNO+ detector during its water commissioning phase. At energies above 6 M…
Systematic study of trace radioactive impurities in candidate construction materials for EXO-200
D. S. Leonard, P. Grinberg, P. Weber +54
The Enriched Xenon Observatory (EXO) will search for double beta decays of 136Xe. We report the results of a systematic study of trace concentrations of radioactive impurities in a…
Improved search for invisible modes of nucleon decay in water with the SNO+ detector
SNO+ Collaboration, :, A. Allega +116
This paper reports results from a search for single and multi-nucleon disappearance from the O nucleus in water within the \snoplus{} detector using all of the available dat…
A magnetically-driven piston pump for ultra-clean applications
F. LePort, R. Neilson, P. S. Barbeau +77
A magnetically driven piston pump for xenon gas recirculation is presented. The pump is designed to satisfy extreme purity and containment requirements, as is appropriate for the r…
A linear RFQ ion trap for the Enriched Xenon Observatory
B. Flatt, M. Green, J. Wodin +39
The design, construction, and performance of a linear radio-frequency ion trap (RFQ) intended for use in the Enriched Xenon Observatory (EXO) are described. EXO aims to detect the…
Measurement of the B Solar Neutrino Flux Using the Full SNO+ Water Phase Dataset
SNO+ Collaboration, :, A. Allega +109
The SNO+ detector operated initially as a water Cherenkov detector. The implementation of a sealed covergas system midway through water data taking resulted in a significant reduct…
Cosmogenic Neutron Production in Water at SNO+
SNO+ Collaboration, :, M. Abreu +112
Accurate measurement of the cosmogenic muon-induced neutron yield is crucial for constraining a significant background in a wide range of low-energy physics searches. Although prev…
Evidence of Antineutrinos from Distant Reactors using Pure Water at SNO+
SNO+ Collaboration, :, A. Allega +114
The SNO+ Collaboration reports the first evidence of reactor antineutrinos in a Cherenkov detector. The nearest nuclear reactors are located 240~km away in Ontario, Canada. This an…
Characterization of large area APDs for the EXO-200 detector
R. Neilson, F. LePort, A. Pocar +49
EXO-200 uses 468 large area avalanche photodiodes (LAAPDs) for detection of scintillation light in an ultra-low-background liquid xenon (LXe) detector. We describe initial measurem…
First Evidence of Solar Neutrino Interactions on C
SNO+ Collaboration, :, M. Abreu +111
The SNO+ Collaboration reports the first evidence of solar neutrinos interacting on nuclei. The charged current interaction proceeds through $^{13}\t…
Optical calibration of the SNO+ detector in the water phase with deployed sources
SNO+ Collaboration, :, M. R. Anderson +120
SNO+ is a large-scale liquid scintillator experiment with the primary goal of searching for neutrinoless double beta decay, and is located approximately 2 km underground in SNOLAB,…
The SNO+ Experiment
SNO+ Collaboration, :, V. Albanese +251
The SNO+ experiment is located 2 km underground at SNOLAB in Sudbury, Canada. A low background search for neutrinoless double beta () decay will be conducted using 780 ton…
Current Status and Future Prospects of the SNO+ Experiment
SNO+ Collaboration, :, S. Andringa +155
SNO+ is a large liquid scintillator-based experiment located 2km underground at SNOLAB, Sudbury, Canada. It reuses the Sudbury Neutrino Observatory detector, consisting of a 12m di…
Xenon purity analysis for EXO-200 via mass spectrometry
A. Dobi, C. Hall, S. Slutsky +73
We describe purity measurements of the natural and enriched xenon stockpiles used by the EXO-200 double beta decay experiment based on a mass spectrometry technique. The sensitivit…
A simple radionuclide-driven single-ion source
M. Montero DÃez, K. Twelker, W. Fairbank +54
We describe a source capable of producing single barium ions through nuclear recoils in radioactive decay. The source is fabricated by electroplating 148Gd onto a silicon α-partic…
Observation of single collisionally cooled trapped ions in a buffer gas
M. Green, J. Wodin, R. DeVoe +37
Individual Ba ions are trapped in a gas-filled linear ion trap and observed with a high signal-to-noise ratio by resonance fluorescence. Single-ion storage times of ~5 min (~1 min)…
Initial measurement of reactor antineutrino oscillation at SNO+
SNO+ Collaboration, :, A. Allega +119
The SNO+ collaboration reports its first spectral analysis of long-baseline reactor antineutrino oscillation using 114 tonne-years of data. Fitting the neutrino oscillation probabi…
Measurement of reactor antineutrino oscillation at SNO+
SNO+ Collaboration, :, M. Abreu +298
The SNO+ collaboration reports its second spectral analysis of reactor antineutrino oscillation using 286 tonne-years of new data. The measured energies of reactor antineutrino can…
Measurement of reactor antineutrino oscillations with 1.46 ktonne-years of data at SNO+
M. Abreu, A. Allega, M. R. Anderson +108
The SNO+ Collaboration reports new results on reactor antineutrino oscillations using data acquired from May 2022 through July 2025. The spectral analysis of a flux dominated by nu…
Iterative bounds on effective transport for advection diffusion in periodic flow fields
N. B. Murphy, D. Hallman, E. Cherkaev +2
Over three decades ago a Stieltjes integral representation for the effective diffusivity of a tracer in a steady fluid velocity field was developed, involving the spectral measure…
Development, characterisation, and deployment of the SNO+ liquid scintillator
SNO+ Collaboration, :, M. R. Anderson +223
A liquid scintillator consisting of linear alkylbenzene as the solvent and 2,5-diphenyloxazole as the fluor was developed for the SNO+ experiment. This mixture was chosen as it is…
Search for invisible modes of nucleon decay in water with the SNO+ detector
SNO+ Collaboration, :, M. Anderson +195
This paper reports results from a search for nucleon decay through 'invisible' modes, where no visible energy is directly deposited during the decay itself, during the initial wate…
A liquid xenon ionization chamber in an all-fluoropolymer vessel
EXO Collaboration, F. LePort, A. Pocar +42
A novel technique has been developed to build vessels for liquid xenon ionization detectors entirely out of ultra-clean fluoropolymer. We describe the advantages in terms of low ra…
A xenon gas purity monitor for EXO
EXO Collaboration, A. Dobi, C. Hall +57
We discuss the design, operation, and calibration of two versions of a xenon gas purity monitor (GPM) developed for the EXO double beta decay program. The devices are sensitive to…
Bounds on the complex viscoelasticity for surface waves on ice-covered seas
C. Sampson, D. Hallman, N. B. Murphy +2
Oceanic wave propagation through Earth's sea ice covers is a critical component of accurate ice and climate modeling. Continuum models of the polar ocean surface layer are characte…