Patent ID: 9128191
Filing Date: 2015-09-08
Classification: G01T

Abstract:
1. A neutron detector for detecting neutrons, the neutron detector including: an exterior shell bounding and sealing an interior volume, the exterior shell serving as a cathode; a central structure extending longitudinally within the exterior shell, the central structure serving as an anode and being maintained at a first voltage greater than electrical ground; an insulating portion extending radially around the central structure and between the central structure and the exterior shell, the insulating portion extending longitudinally past a shell end of the exterior shell towards a structure end of the central structure; and a guard structure extending circumferentially around an outer insulating surface of the insulating portion, the guard structure being positioned on the insulating portion between the shell end and the structure end, wherein the guard structure is maintained at a second voltage greater than electrical ground such that a leakage current on the outer insulating surface of the insulating portion is absorbed by the guard structure.