miniTimeCube as a neutron scatter camera
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 01, 2019
- Source ID
- 10.1063/1.5079429
Entities
People
- Glenn Jocher
- John G. Learned
- John Koblanski
- Kurtis Nishimura
- M. Sakai
- Ryan C. Dorrill
- Sergey Negrashov
- Shawn Usman
- Viacheslav A. Li
Organizations
- George Mason University
- Lawrence Berkeley National Laboratory
- Lawrence Livermore National Laboratory
- National Geospatial-Intelligence Agency
- University of California
- University of Hawaiʻi System