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journal article·2019-03-01Open access

miniTimeCube as a neutron scatter camera

Glenn R. Jocher, John Koblanski, Viacheslav A. Li, Sergey Negrashov, Ryan C. Dorrill, Kurtis Nishimura, Michinari Sakai, John G. Learned, Shawn Usman

AIP Advances· Volume 9· Issue 3
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Source abstract

Abstract

We present Monte Carlo (MC) simulation results from a study of a compact plastic-scintillator detector suitable for imaging fast neutrons in the 1 – 10 MeV energy range: the miniTimeCube (mTC). Originally designed for antineutrino detection, the mTC consists of 24 MultiChannel Plate (MCP) photodetectors surrounding a 13 cm cube of boron-doped plastic scintillator. Our simulation results show that waveform digitization of 1536 optically sensitive channels surrounding the scintillator should allow for spatiotemporal determination of individual neutron-proton scatters in the detector volume to ∼ 100 picoseconds and ∼5 mm. A Bayesian estimation framework is presented for multiple-scatter reconstruction, and is used to estimate the incoming direction and energy of simulated individual neutrons. Finally, we show how populations of reconstructed neutrons can be used to estimate the direction and energy spectrum of nearby simulated neutron sources.
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Research context

OpenAlex topics: Radiation Detection and Scintillator Technologies · Nuclear Physics and Applications · Particle Detector Development and Performance

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Ultralytics LLC 1 , Arlington, Virginia 22203, USA

Department of Physics and Astronomy, University of Hawaii 2 , Honolulu, Hawaii 96822, USA

Lawrence Livermore National Laboratory 3 , Livermore, California 94550, USA

Department of Information and Computer Sciences, University of Hawaii 4 , Honolulu, Hawaii 96822, USA

University of California 5 , Berkeley, California 94720-7300, USA

Lawrence Berkeley National Laboratory 6 , Berkeley, California 94720-8153, USA

Department of Geography and Geoinformation Science, George Mason University 7 , Fairfax, Virginia 22030, USA

Funding

National Geospatial-Intelligence Agency · Lawrence Livermore National Laboratory

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