0000000000208868

AUTHOR

B. Smithers

showing 3 related works from this author

Mitigation of backgrounds from cosmogenic 137 Xe in xenon gas experiments using 3 He neutron capture

2020

[EN] Xe-136 is used as the target medium for many experiments searching for 0 nu beta beta. Despite underground operation, cosmic muons that reach the laboratory can produce spallation neutrons causing activation of detector materials. A potential background that is difficult to veto using muon tagging comes in the form of Xe-137 created by the capture of neutrons on Xe-136. This isotope decays via beta decay with a half-life of 3.8 min and a Q(beta) of similar to 4.16 MeV. This work proposes and explores the concept of adding a small percentage of He-3 to xenon as a means to capture thermal neutrons and reduce the number of activations in the detector volume. When using this technique we f…

Nuclear and High Energy PhysicsPhysics - Instrumentation and DetectorsScintillation and light emission processesGas and liquid scintillatorsFOS: Physical scienceschemistry.chemical_element01 natural sciences7. Clean energyHigh Energy Physics - ExperimentTECNOLOGIA ELECTRONICANuclear physicsGaseous detectorsSolidHigh Energy Physics - Experiment (hep-ex)XenonDouble beta decay0103 physical sciencesIsotopes of xenonSpallationNeutron010306 general physicsPhysics010308 nuclear & particles physicsFísicaInstrumentation and Detectors (physics.ins-det)Beta DecayNeutron temperatureNeutron capturechemistryScintillatorsRadioactive decayJournal of Physics G: Nuclear and Particle Physics
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White Paper on New Opportunities at the Next-Generation Neutrino Experiments (Part 1: BSM Neutrino Physics and Dark Matter)

2019

The combination of the high intensity proton beam facilities and massive detectors for precision measurements of neutrino oscillation parameters including the charge-parity violating (CPV) phase will open the door to help make beyond the standard model (BSM) physics reachable even in low energy regimes in the accelerator-based experiments. Large-mass detectors with highly precise tracking and energy measurements, excellent timing resolution, and low energy thresholds will enable the searches for BSM phenomena from cosmogenic origin, as well. Therefore, it is also conceivable that BSM topics in the next-generation neutrino experiments could be the dominant physics topics in the foreseeable f…

High Energy Physics - PhenomenologyHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)hep-exPhysics::Instrumentation and DetectorsFOS: Physical scienceshep-phHigh Energy Physics::ExperimentParticle Physics - ExperimentParticle Physics - PhenomenologyHigh Energy Physics - Experiment
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Mitigation of backgrounds from cosmogenic 137Xe in xenon gas experiments using 3He neutron capture

2021

136Xe is used as the target medium for many experiments searching for 0¿ßß. Despite underground operation, cosmic muons that reach the laboratory can produce spallation neutrons causing activation of detector materials. A potential background that is difficult to veto using muon tagging comes in the form of 137Xe created by the capture of neutrons on 136Xe. This isotope decays via beta decay with a half-life of 3.8 min and a Q ß of ~4.16 MeV. This work proposes and explores the concept of adding a small percentage of 3He to xenon as a means to capture thermal neutrons and reduce the number of activations in the detector volume. When using this technique we find the contamination from 137Xe …

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