T. R. Pollmann
YOU?
Author Swipe
View article: Direct measurement of the $$^{39}$$Ar half-life from 3.4 years of data with the DEAP-3600 detector
Direct measurement of the $$^{39}$$Ar half-life from 3.4 years of data with the DEAP-3600 detector Open
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 ± 24) kg of liquid argon distilled from the atmosphere in a direct-dete…
View article: Demonstration of the light collection stability of a PEN-based wavelength shifting reflector in a tonne scale liquid argon detector
Demonstration of the light collection stability of a PEN-based wavelength shifting reflector in a tonne scale liquid argon detector Open
Liquid argon detectors rely on wavelength shifters for efficient detection of scintillation light. The current standard is tetraphenyl butadiene (TPB), but it is challenging to instrument on a large scale. Poly(ethylene 2,6-naphthalate) (P…
View article: Relative measurement and extrapolation of the scintillation quenching factor of $$\alpha $$-particles in liquid argon using DEAP-3600 data
Relative measurement and extrapolation of the scintillation quenching factor of $$\alpha $$-particles in liquid argon using DEAP-3600 data Open
The knowledge of scintillation quenching of $$\alpha $$ -particles plays a paramount role in understanding $$\alpha $$ -induced backgrounds and improving the sensitivity of liquid argon-based direct detection of dark matter experiments. We…
View article: Direct Measurement of the $^{39}$Ar Half-life from 3.4 Years of Data with the DEAP-3600 Detector
Direct Measurement of the $^{39}$Ar Half-life from 3.4 Years of Data with the DEAP-3600 Detector Open
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 liquid argon distilled from the atmosphere in a direct-det…
View article: Physics Briefing Book: Input for the 2026 update of the European Strategy for Particle Physics
Physics Briefing Book: Input for the 2026 update of the European Strategy for Particle Physics Open
The European Strategy for Particle Physics (ESPP) reflects the vision and presents concrete plans of the European particle physics community for advancing human knowledge in fundamental physics. The ESPP is updated every five-to-six years …
View article: Demonstration of the light collection stability of a PEN-based wavelength shifting reflector in a tonne scale liquid argon detector
Demonstration of the light collection stability of a PEN-based wavelength shifting reflector in a tonne scale liquid argon detector Open
Liquid argon detectors rely on wavelength shifters for efficient detection of scintillation light. The current standard is tetraphenyl butadiene (TPB), but it is challenging to instrument on a large scale. Poly(ethylene 2,6-naphthalate) (P…
View article: Relative Measurement and Extrapolation of the Scintillation Quenching Factor of $α$-Particles in Liquid Argon using DEAP-3600 Data
Relative Measurement and Extrapolation of the Scintillation Quenching Factor of $α$-Particles in Liquid Argon using DEAP-3600 Data Open
The knowledge of scintillation quenching of $α$-particles plays a paramount role in understanding $α$-induced backgrounds and improving the sensitivity of liquid argon-based direct detection of dark matter experiments. We performed a relat…
View article: Erratum: Constraints on dark matter-nucleon effective couplings in the presence of kinematically distinct halo substructures using the DEAP-3600 detector [Phys. Rev. D <b>102</b>, 082001 (2020)]
Erratum: Constraints on dark matter-nucleon effective couplings in the presence of kinematically distinct halo substructures using the DEAP-3600 detector [Phys. Rev. D <b>102</b>, 082001 (2020)] Open
Received 24 December 2021DOI:https://doi.org/10.1103/PhysRevD.105.029901© 2022 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasCosmologyDark matterParticle astrophysicsParticle dark matterPhysical SystemsGalactic hal…
View article: First Direct Detection Constraints on Planck-Scale Mass Dark Matter with Multiple-Scatter Signatures Using the DEAP-3600 Detector
First Direct Detection Constraints on Planck-Scale Mass Dark Matter with Multiple-Scatter Signatures Using the DEAP-3600 Detector Open
Dark matter with Planck-scale mass (≃10^{19} GeV/c^{2}) arises in well-motivated theories and could be produced by several cosmological mechanisms. A search for multiscatter signals from supermassive dark matter was performed with a blind …
View article: Direct comparison of PEN and TPB wavelength shifters in a liquid argon detector
Direct comparison of PEN and TPB wavelength shifters in a liquid argon detector Open
A large number of particle detectors employ liquid argon as their target material owing to its high scintillation yield and its ability to drift ionization charge over large distances. Scintillation light from argon is peaked at 128 nm and…
View article: Constraints on dark matter-nucleon effective couplings in the presence of kinematically distinct halo substructures using the DEAP-3600 detector
Constraints on dark matter-nucleon effective couplings in the presence of kinematically distinct halo substructures using the DEAP-3600 detector Open
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 taken during the first year of operation, a null result was…
View article: The impact of digital contact tracing on the SARS-CoV-2 pandemic - a comprehensive modelling study
The impact of digital contact tracing on the SARS-CoV-2 pandemic - a comprehensive modelling study Open
Contact tracing is one of several strategies employed in many countries to curb the spread of SARS-CoV-2. Digital contact tracing (DCT) uses tools such as cell-phone applications to improve tracing speed and reach. We model the impact of D…
View article: Digital Contact Tracing Service: An improved decentralized design for privacy and effectiveness
Digital Contact Tracing Service: An improved decentralized design for privacy and effectiveness Open
We propose a decentralized digital contact tracing service that preserves the users' privacy by design while complying to the highest security standards. Our approach is based on Bluetooth and measures actual encounters of people, the cont…
View article: Electromagnetic backgrounds and potassium-42 activity in the DEAP-3600 dark matter detector
Electromagnetic backgrounds and potassium-42 activity in the DEAP-3600 dark matter detector Open
The DEAP-3600 experiment is searching for WIMP dark matter with a 3.3 tonne\nsingle phase liquid argon (LAr) target, located 2.1 km underground at SNOLAB.\nThe experimental signature of dark matter interactions is keV-scale $^{40}$Ar\nnucl…
View article: Search for dark matter with a 231-day exposure of liquid argon using DEAP-3600 at SNOLAB
Search for dark matter with a 231-day exposure of liquid argon using DEAP-3600 at SNOLAB Open
DEAP-3600 is a single-phase liquid argon (LAr) direct-detection dark matter\nexperiment, operating 2 km underground at SNOLAB (Sudbury, Canada). The\ndetector consists of 3279 kg of LAr contained in a spherical acrylic vessel.\nThis paper …
Estimating the efficiency turn-on curve for a constant-threshold trigger without a calibration dataset Open
\n Many particle physics experiments use constant threshold triggers, where the trigger threshold is in an online variable that can be calculated quickly by the trigger module. Offline data analysis then calculates a more precise offline v…
View article: First Results from the DEAP-3600 Dark Matter Search with Argon at SNOLAB
First Results from the DEAP-3600 Dark Matter Search with Argon at SNOLAB Open
This Letter 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 SNOLAB (Sudbury, Canada) utilizing a large target mass, with…