Results with the neutron scatter camera

Mascarenhas, Nicholas; Brennan, James S.; Krenz, Kevin D.; Marleau, Peter; Mrowka, Stanley

doi:10.1109/nssmic.2008.4775064

Cited by 23 publications

(24 citation statements)

References 3 publications

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“…Furthermore, applications are not limited to soil moisture. With measurements at multiple neutron energies, different heights above the ground or from directionally sensitive detectors [e.g., Mascarenhas et al, 2009], snow, soil water content and biomass can potentially be determined independently from the soil moisture signal.…”

Section: Operational Advantagesmentioning

confidence: 99%

Nature's neutron probe: Land surface hydrology at an elusive scale with cosmic rays

Desilets

Zréda

Ferré

2010

Water Resources Research

310

462

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[1] Fast neutrons are generated naturally at the land surface by energetic cosmic rays. These "background" neutrons respond strongly to the presence of water at or near the land surface and represent a hitherto elusive intermediate spatial scale of observation that is ideal for land surface studies and modeling. Soil moisture, snow, and biomass each have a distinct influence on the spectrum, height profile, and directional intensity of neutron fluxes above the ground, suggesting that different sources of water at the land surface can be distinguished with neutron data alone. Measurements can be taken at fixed sites for long-term monitoring or in a moving vehicle for mapping over large areas. We anticipate applications in many previously problematic contexts, including saline environments, wetlands and peat bogs, rocky soils, the active layer of permafrost, and water and snow intercepted by vegetation, as well as calibration and validation of data from spaceborne sensors.Citation: Desilets, D., M. Zreda, and T. P. A. Ferré (2010), Nature's neutron probe: Land surface hydrology at an elusive scale with cosmic rays, Water Resour. Res., 46, W11505,

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Section: Operational Advantagesmentioning

confidence: 99%

Nature's neutron probe: Land surface hydrology at an elusive scale with cosmic rays

Desilets

Zréda

Ferré

2010

Water Resources Research

310

462

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“…Past detectors used to evaluate neutron backgrounda are SciBath [27] and a two-plane neutron scatter camera [28]; two detectors (the "neutrino cubes") are deployed to measure NINs in Fe and Pb. The MARS detector [29] is currently measuring neutron backgrounds.…”

Section: Status and Futurementioning

confidence: 99%

Observation of Coherent Elastic Neutrino-Nucleus Scattering by COHERENT

Scholberg¹

2018

Proceedings of the 19th International Workshop on Neutrinos From Accelerators NUFACT2017 — PoS(NuFact2017)

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The COHERENT collaboration measured coherent elastic neutrino-nucleus scattering (CEvNS) for the first time at the Spallation Neutron Source at Oak Ridge National Laboratory, using a CsI[Na] detector [1]. Here we discuss the nature of the CEvNS process, physics motivations, and experimental considerations for measuring CEvNS. We describe the CsI[Na] measurement, along with status and future of COHERENT.

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“…This study utilized a lightweight and portable system comprising of a single channel MFA, detector, collimator and equatorial mount [17], [18]. This compact singledetector system overcomes the problems of other imagers reported in the literature that are not portable and use large arrays of detectors [19], [20], and are therefore not easily transferable to areas with limited physical access. The data acquired during this campaign comprised of a matrix with 9504 elements corresponding to different orientations of the detector and collimator.…”

Section: A Review Of the Measurementsmentioning

confidence: 99%

Real-Time Capabilities of a Digital Analyzer for Mixed-Field Assay Using Scintillation Detectors

Aspinall

Joyce

Lavietes

et al. 2017

IEEE Trans. Nucl. Sci.

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Abstract-Scintillation detectors offer a single-step detection method for fast neutrons and necessitate real-time acquisition, whereas this is redundant in two-stage thermal detection systems using helium-3 and lithium-6, where the fast neutrons need to be thermalized prior to detection. The relative affordability of scintillation detectors and the associated fast digital acquisition systems have enabled entirely new measurement setups that can consist of sizeable detector arrays. These detectors in most cases rely on photo-multiplier tubes which have significant tolerances and result in variations in detector response functions. The detector tolerances and other environmental instabilities must be accounted for in measurements that depend on matched detector performance. This paper presents recent advances made to a high-speed FPGA-based digitizer. The technology described offers a complete solution for fast-neutron scintillation detectors by integrating multichannel high-speed data acquisition technology with dedicated detector high-voltage supplies. This configuration has significant advantages for large detector arrays that require uniform detector responses. We report on bespoke control software and firmware techniques that exploit realtime functionality to reduce setup and acquisition time, increase repeatability and reduce statistical uncertainties.

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Results with the neutron scatter camera

Cited by 23 publications

References 3 publications

Nature's neutron probe: Land surface hydrology at an elusive scale with cosmic rays

Nature's neutron probe: Land surface hydrology at an elusive scale with cosmic rays

Observation of Coherent Elastic Neutrino-Nucleus Scattering by COHERENT

Real-Time Capabilities of a Digital Analyzer for Mixed-Field Assay Using Scintillation Detectors

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