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Showing 1 to 20 of 45 for “"liquid argon"”.
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Simulated liquid argon interactions with neutrons
… backgrounds in the MiniCLEAN single phase liquid argon WIMP detector. Elastic and inelastic collisions between neutrons and argon nuclei as well as neutron captures were simulated independently in order to characterize the accuracy of the implementation by GEANT4.9.3.pOl and GEANT4.9.5. The …
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Development of a liquid argon purity monitoring system
Liquid argon time-projection chambers (LArTPCs) are used to detect charged particles and measure their properties. Charged particles that pass through the liquid argon (LAr) in a LArTPC ionize and excite argon atoms, producing ionization electrons and prompt scintillation light. The ionization …
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Toward a Precision Measurement of CEvNS on Liquid Argon
… cross section on several targets. The first liquid argon measurement was made in 2021. The collaboration is currently undertaking precise measurements of the CEvNS cross section, the first of such measurements to be made on the liquid argon detector COH Ar 750. Making a precise measurement of …
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A molecular dynamics investigation of a free surface of liquid argon
… the equilibrium molecular structure of the liquid-vapour interfacial region for argon at about 124 °K. The density profile through the surface is found to be of a non-monotonic form. The pair distribution function in the surface is also determined and compared to radial distribution …
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First Search for Gravitational Wave Coincident Neutrinos in a Liquid Argon Detector with DEAP-3600
Modern liquid argon (LAr) scintillation detectors are capable of detecting many types of rare particle interactions with extremely low cross sections. One such detector, DEAP-3600, was originally designed to observe weak interactions between nuclei and dark matter; its low backgrounds and argon …
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Characterization of Scintillation Light in Large Liquid Argon Detectors and the Implications for Proton Decay Searches
… proton decay. ProtoDUNE-SP was a single-phase liquid argon time projection chamber - a prototype for the first far detector module of DUNE with an active volume of 700 tons operating until 2020. It was installed at the CERN Neutrino Platform and took particle beam and cosmic ray data over its …
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Liquid Argon scintillation light quenching due to Nitrogen impurities : measurements performed for the MicroBooNE vertical slice test
… of nitrogen gas impurity concentration in the liquid argon. We nd marginal evidence for a third component and further steps are identified to improve upon this study. Our late light quenching measurement also agrees with previously published results in the literature. These two measurements are …
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DEVELOPMENT OF HIGH-EFFICIENCY POWER DISTRIBUTION ARCHITECTURES BASED ON GAN DEVICES FOR THE LIQUID ARGON CALORIMETER ATLAS EXPERIMENT AT THE LHC
… for the front-end electronics of the ATLAS Liquid Argon (LAr) calorimeter. This development is necessitated by the upgrade that the experiment will receive in the coming years. To meet the more stringent performance demands, Wide Band Gap (WBG) materials like gallium nitride (GaN) are also …
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Measurement of K+ Production in νμ Charged-Current Interactions on Liquid Argon with MicroBooNE and Enhancing Proton Decay Sensitivity at DUNE
… Neutrino Experiment (DUNE), utilising liquid argon time projection chamber (LArTPC) technology, aims to address these questions but requires precise measurements and modelling of neutrino interactions and background processes to optimise its sensitivity. Currently, data on …
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Design of the electron spectrometer for the HUNTER experiment and timescale of electron thermalization in liquid Argon for directional detection of WIMP dark matter
… the anisotropy. The peculiar microphysics of liquid Argon requires thermalization of ionization electrons for a signal to form. To determine if directional information can be extracted, one needs to understand the energy spectrum of the electrons emitted in recoil event. Then, one needs a …
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Attenuation of the scintillation light in liquid argon and investigation of the double beta decay of ⁷⁶Ge into excited states of ⁷⁶Se in the GERDA experiment
… GERDA operates enriched germanium detectors in liquid argon (LAr) which serves as an additional background veto using the scintillation light that is created when energy is deposited in LAr. The signal signature of the decay into excited states can be enhanced with the application of the LAr …
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A Geant4 Simulation Study Of A Xenon-Doped Liquid Argon, Full-Body, Time-of-Flight Positron Emission Tomography Scanner To Understand Its Performance And Noise Profile
… (SiPM) coupled with a Xenon-doped Liquid Argon (LAr+Xe) scintillator. This design was simulated using the Geant4 particle-matter monte carlo simulation tool-kit while following the National Electrical Manufacturers Association’s evaluation tests (2018) for performance assessment. …
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Pi+ Cross Section on Argon for the LArIAT Experiment
<p>LArIAT (Liquid Argon in a Testbeam) was a LArTPC experiment exposed to a charged-particle beam at the test-beam facility at Fermi National Accelerator Laboratory. This analysis measures the $\pi^+$-Ar cross section over an interacting energy range of 50-1100 MeV, accounting for background …
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Background studies for DarkSide Detectors
… a dual-phase Time Projection Chamber (TPC) with liquid argon (LAr) as the DM target. The next-generation DM detector, DarkSide-20k, will have multiple tons of liquid argon in its TPC for dark matter searches. It is expected to achieve sufficient sensitivity to detect WIMP dark matter or exclude a …
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Sterile neutrinos in cold climates
… longer baselines are predicted. Part II concerns liquid argon detector development for the MicroBooNE experiment, which will search for short-baseline oscillations in the Booster Neutrino Beam at Fermilab. Topics include characterization and installation of the MicroBooNE optical system; …
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Study on measuring Neutrino interactions with the ICARUS detector and addressing its cosmic ray background.
… mass scale. The program makes use of three liquid argon time projection chambers sequentially positioned along the Booster Neutrino Beam, in this setup ICARUS serves as the far detector. The primary goal of the program is to prove or disprove anomalous results from previous experiments that …
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Liquid flow past nanoscale objects
… molecular dynamics (MD) simulations of liquid flow past a carbon nanotube (CNT) and a single graphene sheet. We apply a gravity driven liquid argon flow past a CNT in a small domain and show that the drag coefficients can be modeled as Stokes flow past an array of CNT's with an effective …
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Measuring Single Charged Pion Production in Muon Neutrino Interactions on Argon with MicroBooNE
… over long distances before interacting with a liquid argon target. Accurate determination of the neutrino energy, crucial for oscillation studies, requires a good understanding of neutrino–nucleus interactions. At the neutrino energies planned for DUNE, resonance production with pion emission …
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Identification and Reduction of the Alpha Background, From 238U and 232Th Decay Chains, in the DEAP-3600 Experiment.
… collaboration developed a single-phase 3600 kg liquid argon experiment, DEAP-3600, to measure possible nuclear recoils generated by the interactions between the target nuclei and WIMP particles from the surrounding galactic dark matter halo. DEAP-3600 utilizes the powerful pulse-shape …
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Phenomenology of a Low-Energy Neutrino Factory and Related Experiments
… physics reach of this setup with a 100 kiloton liquid argon detector and comparing its performance to that of a 50 kiloton liquid scintillator detector and a 440 kiloton water Cerenkov detector. The liquid argon and liquid scintillator detectors are found to perform best, providing sensitivity …
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