Patent ID: 8063378

Claim:
An ionizing radiation detector comprising: a cathode; an anode; a Frisch-ring shielding electrode; an insulator; a detector crystal having a body extending longitudinally, said body having first and second ends, wherein said cathode surrounds a first portion of the longitudinal surface of said body, extending from the first end along said body, and is in electrical contact with the surfaces of the first end and the first portion, wherein said anode is in electrical contact with the surface of the second end, wherein said Frisch-ring surrounds only a second portion of the longitudinal surface of said body, extending from the second end along said body, such that the first and second portions do not overlap, and wherein said insulator surrounds said second portion, between said body and said Frisch-ring, and said insulator electrically isolates said Frisch-ring from said body and said cathode, and said body being electrically shielded by said cathode, anode, and Frisch-ring from electrostatic interference.