Patent ID: 9594171
Date: 2017-03-14
CPC Classifications: G01T,H01J

Claim:
1. A detector for radiation, comprising: a converting section 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 formed integrally with 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 each hole of the plurality of holes is covered at one side completely by the detector anode; wherein the converting section includes a photocathode having a first side that faces the radiation entering the converting section and an opposing second side that faces the gas electron multiplier, the photocathode directly emitting the electrons due to the photoelectric effect of light impinging on the photocathode.