A DETECTOR FOR RADIATION, PARTICULARLY HIGH ENERGY ELECTROMAGNETIC RADIATION

摘要

A detector for radiation, particularly high energy electromagnetic radiation is provided. The detector includes a converting section including a cathode for converting the radiation incident on the converting section in electrons by the photoelectric effect. The detector further includes a gas electron multiplier for generating an electron avalanche from electrons which are generated by the converting section and enter the gas electron multiplier, the gas electron multiplier including a first electrode, a dielectric layer and a second electrode, the first electrode being disposed at a first side of the dielectric layer adjacent to the converting section and the second electrode being disposed at a second side of the dielectric layer opposite to the first side. The gas electron multiplier includes a number of holes filled with gas, the holes extending through the first electrode, the dielectric layer and the second electrode.

主权项

1. A detector for radiation, comprising:
a converting section including a cathode for converting the radiation incident on the converting section in electrons by a photoelectric effect; a gas electron multiplier for generating an electron avalanche from the electrons that are generated by the converting section and enter the gas electron multiplier, the gas electron multiplier comprising a first electrode, a dielectric layer and a second electrode, the first electrode being disposed at a first side of the dielectric layer adjacent to the converting section and the second electrode being disposed at a second side of the dielectric layer opposite to the first side, wherein the gas electron multiplier comprises a plurality of holes filled with gas, the plurality of holes extending through the first electrode, the dielectric layer and the second electrode; and a detector anode adjacent to the second electrode for detecting the electron Avalanche, wherein the detector anode extends at each hole of the plurality of holes of the gas electron multiplier from the second electrode over the hole such that the hole of the plurality of holes is covered at one side completely by the detector anode.