Directional Fast Neutron Detection Using a Time Projection Chamber
N. S. Bowden, M. Heffner, G. Carosi, D. Carter, P. O'Malley, J. Mintz,, M. Foxe, I. Jovanovic
TL;DR
This paper demonstrates a method for directional fast neutron detection using a hydrogen gas time projection chamber, which provides 3D trajectory data and gamma rejection, suitable for nuclear material searches.
Contribution
The study introduces a novel application of a hydrogen gas TPC for directional fast neutron detection with high gamma rejection.
Findings
Successful measurement of 3D recoil proton trajectories
High gamma rejection capabilities demonstrated
Wide field of view achieved
Abstract
Measurement of the three dimensional trajectory and specific ionization of recoil protons using a hydrogen gas time projection chamber provides directional information about incident fast neutrons. Here we demonstrate directional fast neutron detection using such a device. The wide field of view and excellent gamma rejection that are obtained suggest that this device is well suited to searches for special nuclear materials, among other applications.
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