Publications (31)
Measurement of the scintillation time spectra and pulse-shape discrimination of low-energy beta and nuclear recoils in liquid argon with DEAP-1
P. -A. Amaudruz, M. Batygov, B. Beltran +69
The DEAP-1 low-background liquid argon detector was used to measure scintillation pulse shapes of electron and nuclear recoil events and to demonstrate the feasibility of pulse-sha…
Design and Construction of the DEAP-3600 Dark Matter Detector
P. -A. Amaudruz, M. Baldwin, M. Batygov +106
The Dark matter Experiment using Argon Pulse-shape discrimination (DEAP) has been designed for a direct detection search for particle dark matter using a single-phase liquid argon…
Search for dark matter with a 231-day exposure of liquid argon using DEAP-3600 at SNOLAB
R. Ajaj, P. -A. Amaudruz, G. R. Araujo +99
DEAP-3600 is a single-phase liquid argon (LAr) direct-detection dark matter experiment, operating 2 km underground at SNOLAB (Sudbury, Canada). The detector consists of 3279 kg of…
Community Report from the 2025 SNOLAB Future Projects Workshop
M. D. Diamond, P. Abbamonte, A. Arvanitaki +54
SNOLAB hosts a biannual Future Projects Workshop (FPW) with the goal of encouraging future project stakeholders to present ideas, concepts, and needs for experiments or programs th…
In-situ characterization of the Hamamatsu R5912-HQE photomultiplier tubes used in the DEAP-3600 experiment
DEAP Collaboration, P. -A. Amaudruz, M. Batygov +99
The Hamamatsu R5912-HQE photomultiplier-tube (PMT) is a novel high-quantum efficiency PMT. It is currently used in the DEAP-3600 dark matter detector and is of significant interest…
Data-Driven Modeling of Electron Recoil Nucleation in PICO CF Bubble Chambers
C. Amole, M. Ardid, I. J. Arnquist +76
The primary advantage of moderately superheated bubble chamber detectors is their simultaneous sensitivity to nuclear recoils from WIMP dark matter and insensitivity to electron re…
Electromagnetic Backgrounds and Potassium-42 Activity in the DEAP-3600 Dark Matter Detector
R. Ajaj, G. R. Araujo, M. Batygov +88
The DEAP-3600 experiment is searching for WIMP dark matter with a 3.3 tonne single phase liquid argon (LAr) target, located 2.1 km underground at SNOLAB. The experimental signature…
Application of the TPB Wavelength Shifter to the DEAP-3600 Spherical Acrylic Vessel Inner Surface
B. Broerman, M. G. Boulay, B. Cai +11
DEAP-3600 uses liquid argon contained in a spherical acrylic vessel as a target medium to perform a sensitive spin-independent dark matter search. Argon scintillates in the vacuum…
Absorption of Fermionic Dark Matter in the PICO-60 CF Bubble Chamber
E. Adams, B. Ali, R. Anderson-Dornan +58
Fermionic dark matter absorption on nuclear targets via neutral current interactions is explored using a non-relativistic effective field theory framework. An analysis of data from…
Dark Matter Search Results from the Complete Exposure of the PICO-60 CF Bubble Chamber
C. Amole, M. Ardid, I. J. Arnquist +69
Final results are reported from operation of the PICO-60 CF dark matter detector, a bubble chamber filled with 52 kg of CF located in the SNOLAB underground laborat…
ZnO-based scintillating bolometers: New prospects to study double beta decay of Zn
A. Armatol, B. Broerman, L. Dumoulin +15
The first detailed study on the performance of a ZnO-based cryogenic scintillating bolometer as a detector to search for rare processes in zinc isotopes was performed. A 7.2 g ZnO…
First results from the DEAP-3600 dark matter search with argon at SNOLAB
3600 Collaboration, P. -A. Amaudruz, M. Baldwin +102
This paper reports the first results of a direct dark matter search with the DEAP-3600 single-phase liquid argon (LAr) detector. The experiment was performed 2 km underground at SN…
Determining the bubble nucleation efficiency of low-energy nuclear recoils in superheated CF dark matter detectors
B. Ali, I. J. Arnquist, D. Baxter +54
The bubble nucleation efficiency of low-energy nuclear recoils in superheated liquids plays a crucial role in interpreting results from direct searches for weakly interacting massi…
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 Ar b…
First evidence of neutrino absorption on argon using 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 ) from B solar neutrinos on Ar using an exposure of (…
Results on photon-mediated dark matter-nucleus interactions from the PICO-60 CF bubble chamber
B. Ali, I. J. Arnquist, D. Baxter +52
Many compelling models predict dark matter coupling to the electromagnetic current through higher multipole interactions, while remaining electrically neutral. Different multipole…
Developing a Bubble Chamber Particle Discriminator Using Semi-Supervised Learning
B. Matusch, C. Amole, M. Ardid +70
The identification of non-signal events is a major hurdle to overcome for bubble chamber dark matter experiments such as PICO-60. The current practice of manually developing a disc…
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…
Batch VUV4 Characterization for the SBC-LAr10 scintillating bubble chamber
H. Hawley-Herrera, E. Alfonso-Pita, E. Behnke +28
The Scintillating Bubble Chamber (SBC) collaboration purchased 32 Hamamatsu VUV4 silicon photomultipliers (SiPMs) for use in SBC-LAr10, a bubble chamber containing 10~kg of liquid…
Low-threshold response of a scintillating xenon bubble chamber to nuclear and electronic recoils
E. Alfonso-Pita, E. Behnke, M. Bressler +29
A device filled with pure xenon first demonstrated the ability to operate simultaneously as a bubble chamber and scintillation detector in 2017. Initial results from data taken at…
Status of the X17 search in Montreal
G. Azuelos, B. Broerman, D. Bryman +15
At the Montreal Tandem accelerator, an experiment is being set up to measure internal pair creation from the decay of nuclear excited states using a multiwire proportional chamber…
Velocity independent constraints on spin-dependent DM-nucleon interactions from IceCube and PICO
IceCube Collaboration, M. G. Aartsen, M. Ackermann +419
Adopting the Standard Halo Model (SHM) of an isotropic Maxwellian velocity distribution for dark matter (DM) particles in the Galaxy, the most stringent current constraints on thei…
Search for inelastic dark matter-nucleus scattering with the PICO-60 CFI and CF bubble chambers
E. Adams, B. Ali, I. J. Arnquist +52
PICO bubble chambers have exceptional sensitivity to inelastic dark matter-nucleus interactions due to a combination of their extended nuclear recoil energy detection window from a…
Improving Photoelectron Counting and Particle Identification in Scintillation Detectors with Bayesian Techniques
M. Akashi-Ronquest, P. -A. Amaudruz, M. Batygov +79
Many current and future dark matter and neutrino detectors are designed to measure scintillation light with a large array of photomultiplier tubes (PMTs). The energy resolution and…
Precision Measurement of the Specific Activity of 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 Ar in atmospheric argon is measured using the DEAP-3600 detector. DEAP-3600, located 2 km underground at SNOLAB, uses a total of (…
The liquid-argon scintillation pulseshape in DEAP-3600
The DEAP collaboration, P. Adhikari, R. Ajaj +98
DEAP-3600 is a liquid-argon scintillation detector looking for dark matter. Scintillation events in the liquid argon (LAr) are registered by 255 photomultiplier tubes (PMTs), and p…
Polyethylene naphthalate film as a wavelength shifter in liquid argon detectors
M. Kuźniak, B. Broerman, T. Pollmann +1
Liquid argon-based scintillation detectors are important for dark matter searches and neutrino physics. Argon scintillation light is in the vacuum ultraviolet region, making it har…
DEAP-3600 Dark Matter Search
DEAP Collaboration, P. -A. Amaudruz, M. Batygov +54
The DEAP-3600 experiment is located 2 km underground at SNOLAB, in Sudbury, Ontario. It is a single-phase detector that searches for dark matter particle interactions within a 1000…
Snowmass 2021 Scintillating Bubble Chambers: Liquid-noble Bubble Chambers for Dark Matter and CENS Detection
E. Alfonso-Pita, M. Baker, E. Behnke +42
The Scintillating Bubble Chamber (SBC) Collaboration is developing liquid-noble bubble chambers for the quasi-background-free detection of low-mass (GeV-scale) dark matter and cohe…
Updated and novel limits on double beta decay and dark matter-induced processes in platinum
B. Broerman, M. Laubenstein, S. Nagorny +3
A 510 day long-term measurement of a 45.3 g platinum foil acting as the sample and high voltage contact in an ultra-low-background high purity germanium detector was performed at L…
A search for rare and induced nuclear decays in hafnium
B. Broerman, M. Laubenstein, S. Nagorny +2
A measurement of hafnium foil using a modified ultra-low-background high purity detector with optimized sample-to-detector geometry was performed at Laboratori Nazionale del Gran S…