Radiation Detector

摘要

A radiation detector includes a scintillator crystal (2) in the form of a slab mounted to be rotated by a drive (4) in a housing (8). A photon detector (6) detects photons emitted by the crystal (2). The crystal (2) is rotated to a number of measurement angles and the radiation emitted by a radiation source determined by counting the photons detected by the photon detector. This is used to determine the direction towards the radiation source.

主权项

1. A radiation detector comprising:
a scintillator crystal; a rotary mounting supporting the scintillator crystal allowing rotation of the scintillator crystal about a rotation axis; a drive means arranged to rotate the scintillator crystal about the rotation axis to controllable angles; and a photon detector arranged to measure photons emitted by the scintillator crystal in response to radiation; wherein the scintillator crystal is shaped to present a cross-section to radiation from a radiation source that varies as a function of angle as the scintillator crystal rotates about the rotation axis.