Grant Riley
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View article: A Novel, Steerable, Low-Energy Proton Source for Detector Characterization
A Novel, Steerable, Low-Energy Proton Source for Detector Characterization Open
We report on the conversion of the Manitoba II mass spectrometer into a versatile low-energy proton beam facility. This infrastructure is adaptable to any detector-under-test (DUT), and has proven itself effective with the characterization…
View article: First Full Dalitz Plot Measurement in Neutron $β$-Decay using the Nab Spectrometer and Implications for New Physics
First Full Dalitz Plot Measurement in Neutron $β$-Decay using the Nab Spectrometer and Implications for New Physics Open
Precision measurements of observables in neutron $β$-decay are used to test the Standard Model description of the weak interaction and search for evidence of new physics. The Nab experiment at the Fundamental Neutron Physics Beamline at th…
View article: A Method for Proton Detector Efficiency Measurement with Applications in Neutron Beta Decay and Lifetime Experiments
A Method for Proton Detector Efficiency Measurement with Applications in Neutron Beta Decay and Lifetime Experiments Open
This article proposes a new method to measure the proton detector efficiency for use in "beam" determinations of the free neutron lifetime. There is currently a 4σ disagreement between the "beam" and "storage" methods of measuring the life…
View article: A Flexible Data Acquisition System Architecture for the Nab Experiment
A Flexible Data Acquisition System Architecture for the Nab Experiment Open
The Nab experiment will measure the electron-neutrino correlation and Fierz interference term in free neutron beta decay to test the Standard Model and probe Beyond the Standard Model Physics. Using National Instrument's PXIe-5171 Reconfig…
View article: Delta-Rice: A HDF5 Compression Plugin optimized forDigitized Detector Data
Delta-Rice: A HDF5 Compression Plugin optimized forDigitized Detector Data Open
Delta-Rice is an HDF5 (The HDF Group et al., 2020) filter plugin that was developed to compress digitized detector signals recorded by the Nab experiment (Fry et al., 2019), a fundamental neutron physics experiment. This is a two-step proc…
View article: Precision pulse shape simulation for proton detection at the Nab experiment
Precision pulse shape simulation for proton detection at the Nab experiment Open
The Nab experiment at Oak Ridge National Laboratory, USA, aims to measure the beta-antineutrino angular correlation following neutron β decay to an anticipated precision of approximately 0.1%. The proton momentum is reconstructed through p…
Low Size, Weight, Power and Cost (SWaP-C) Neutron Detection for Space Missions Open
This document examines several scalable, low Size, Weight, Power and Cost (SWaP-C), neutron sensing technologies and provides an assessment of their technical readiness level (TRL) for space missions. The identification and maturation of l…
View article: Precision pulse shape simulation for proton detection at the Nab experiment
Precision pulse shape simulation for proton detection at the Nab experiment Open
The Nab experiment at Oak Ridge National Laboratory, USA, aims to measure the beta-antineutrino angular correlation following neutron $β$ decay to an anticipated precision of approximately 0.1\%. The proton momentum is reconstructed throug…
View article: Hierarchical Organization of Single Crystal Polymorphs of Azobenzene Chromophore in Anisotropic Media Subjected to Local Thermal Gradients upon Cold Spraying
Hierarchical Organization of Single Crystal Polymorphs of Azobenzene Chromophore in Anisotropic Media Subjected to Local Thermal Gradients upon Cold Spraying Open
The present article entails the emergence of diverse crystal polymorphs following thermal quenching into various coexistence regions of binary azobenzene chromophore (ACh)/diacrylate (DA) solution and of azobenzene/nematic liquid crystal (…
View article: Diamond detectors for high energy physics experiments
Diamond detectors for high energy physics experiments Open
Beam test results of the radiation tolerance study of chemical vapour deposition (CVD) diamond against different particle species and energies is presented. We also present beam test results on the independence of signal size on incident p…
View article: Diamond Particle Detectors for High Energy Physics
Diamond Particle Detectors for High Energy Physics Open
Diamond devices have now become ubiquitous in the LHC experiments, finding applications in beam background monitoring and luminosity measuring systems. This sensor material is now maturing to the point that the large pads in existing diamo…