M. Stringer

The COHERENT Experiment: 2026 Update

M. Adhikari, M. Ahn, D. Amaya Matamoros +107

The COHERENT experiment measures neutrino-induced recoils from coherent elastic neutrino-nucleus scattering (CEvNS) with multiple nuclear targets at the Spallation Neutron Source (…

Pulseshape discrimination against low-energy Ar-39 beta decays in liquid argon with 4.5 tonne-years of DEAP-3600 data

The DEAP Collaboration, P. Adhikari, R. Ajaj +126

The DEAP-3600 detector searches for the scintillation signal from dark matter particles scattering on a 3.3 tonne liquid argon target. The largest background comes from $^{39}$ Ar b…

Fluorescence of pyrene-doped polystyrene films from room temperature down to 4 K for wavelength-shifting applications

H. Benmansour, E. Ellingwood, Q. Hars +13

In liquid argon-based particle detectors, slow wavelength shifters (WLSs) could be used alongside the common, nanosecond scale, WLS tetraphenyl butadiene (TPB) for background mitig…

astro-ph.HE2020

Sensitivity of future liquid argon dark matter search experiments to core-collapse supernova neutrinos

P. Agnes, S. Albergo, I. F. M. Albuquerque +273

Future liquid-argon DarkSide-20k and ARGO detectors, designed for direct dark matter search, will be sensitive also to core-collapse supernova neutrinos, via coherent elastic neutr…

hep-ex2023

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

P. S. Barbeau, V. Belov, I. Bernardi +77

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 sens…

First evidence of neutrino absorption on argon using $^{8}$ B solar neutrinos in DEAP-3600

P. Adhikari, P. -A. Amaudruz, D. J. Auty +113

We report experimental evidence for electron neutrino charged-current interactions (neutrino absorption, CC $I^½_{e}$ ) from $^{8}$ B solar neutrinos on $^{40}$ Ar using an exposure of (…

Neutrino-based safeguards of CANDU spent fuel using superconducting detectors and the CE $I^½$ NS interaction

M. Stringer, A. Erlandson, V. N. P. Anghel +1

To prevent the unauthorised spread of radioactive materials, it is essential to detect and monitor spent nuclear fuel. This paper investigates the feasibility of using a detector b…

physics.ins-det2025

Position Reconstruction in the DEAP-3600 Dark Matter Search Experiment

The DEAP Collaboration, P. Adhikari, R. Ajaj +162

In the DEAP-3600 dark matter search experiment, precise reconstruction of the positions of scattering events in liquid argon is key for background rejection and defining a fiducial…

Directionality of nuclear recoils in a liquid argon time projection chamber

20k Collaboration, P. Agnes, I. Ahmad +264

The direct search for dark matter in the form of weakly interacting massive particles (WIMP) is performed by detecting nuclear recoils (NR) produced in a target material from the W…

Dark Matter Search with the DEAP-3600 Detector using the Profile Likelihood Ratio Method

DEAP Collaboration, P. Adhikari, R. Ajaj +122

We present here a search for WIMP dark matter using 790.8 live-days of data collected with 3269 kg of liquid argon (1266 kg fiducial) by the DEAP-3600 detector at SNOLAB, using the…

physics.ins-det2025

Relative Measurement and Extrapolation of the Scintillation Quenching Factor of $I^\pm$ -Particles in Liquid Argon using DEAP-3600 Data

DEAP Collaboration, P. Adhikari, M. AlpÃzar-Venegas +101

The knowledge of scintillation quenching of $I^\pm$ -particles plays a paramount role in understanding $I^\pm$ -induced backgrounds and improving the sensitivity of liquid argon-based dire…

nucl-ex2025

Direct Measurement of the $^{39}$ Ar Half-life from 3.4 Years of Data with the DEAP-3600 Detector

DEAP Collaboration, P. Adhikari, R. Ajaj +114

The half-life of $^{39}$ Ar is measured using the DEAP-3600 detector located 2 km underground at SNOLAB. Between 2016 and 2020, DEAP-3600 used a target mass of (3269 $\pm$ 24) kg of…

astro-ph.CO2022

Constraints on dark matter-nucleon effective couplings in the presence of kinematically distinct halo substructures using the DEAP-3600 detector

P. Adhikari, R. Ajaj, C. E. Bina +81

DEAP-3600 is a single-phase liquid argon detector aiming to directly detect Weakly Interacting Massive Particles (WIMPs), located at SNOLAB (Sudbury, Canada). After analyzing data…

astro-ph.CO2022

First direct detection constraints on Planck-scale mass dark matter with multiple-scatter signatures using the DEAP-3600 detector

P. Adhikari, R. Ajaj, M. AlpÃzar-Venegas +94

Dark matter particles with Planck-scale mass ( $≃ 1 0^{19} GeV / c^{2}$ ) arise in well-motivated theories and could be produced by several cosmological mechanisms. Using a blin…

Measurement of coherent elastic neutrino nucleus scattering on germanium by COHERENT

M. Adhikari, M. Ahn, D. Amaya Matamoros +103

The COHERENT collaboration reports the most precise measurement of the coherent elastic neutrino-nucleus scattering cross section to date. This measurement was performed with COHER…

Precision Measurement of the Specific Activity of $^{39}$ Ar in Atmospheric Argon with the DEAP-3600 Detector

P. Adhikari, R. Ajaj, M. AlpÃzar-Venegas +147

The specific activity of the beta decay of $^{39}$ Ar in atmospheric argon is measured using the DEAP-3600 detector. DEAP-3600, located 2 km underground at SNOLAB, uses a total of (…

Separating $^{39}$ Ar from $^{40}$ Ar by cryogenic distillation with Aria for dark matter searches

DarkSide Collaboration, P. Agnes, S. Albergo +309

The Aria project consists of a plant, hosting a 350 m cryogenic isotopic distillation column, the tallest ever built, which is currently in the installation phase in a mine shaft a…

Development and characterization of a slow wavelength shifting coating for background rejection in liquid argon detectors

D. Gallacher, A. Leonhardt, H. Benmansour +15

We describe a technique, applicable to liquid-argon-based dark matter detectors, allowing for discrimination of alpha-decays in detector regions with incomplete light collection fr…

hep-ex2025

Evidence of Coherent Elastic Neutrino-Nucleus Scattering with COHERENT's Germanium Array

S. Adamski, M. Ahn, P. S. Barbeau +85

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 Laborato…

Sensitivity projections for a dual-phase argon TPC optimized for light dark matter searches through the ionization channel

P. Agnes, I. Ahmad, S. Albergo +296

Dark matter lighter than 10 GeV/c $^{2}$ encompasses a promising range of candidates. A conceptual design for a new detector, DarkSide-LowMass, is presented, based on the DarkSide-50…