Regular triangle based gamma ray collimator matched with pixel detector

Abstract

The invention relates to a regular triangle based gamma ray collimator matched with a pixel detector. The regular triangle based gamma ray collimator comprises regular triangle holes or truncated regular triangle holes, wherein the number and arrangement of the regular triangle holes or truncated regular triangle holes are consistent with those of anode pixel electrodes of the gamma ray detector;the gamma ray intensity can be attenuated by the minimum hole spacing with the incident intensity being 95% or above; through collimation holes are perpendicular to the plane where the collimation hole characteristic shapes are located and are arranged in parallel; a shielding layer of the detector is formed by the side wall of the collimator enabling region and the non-perforated region of the collimation hole characteristic plane; a circular bearing disc is arranged at the bottom end of the detector and plays a role in fixing and supporting a rack; the detector assembling area is formed by combining a hole formed in the circular bearing disc and a groove formed in the middle lower part in the collimator enabling area; and fixing holes formed by periodic through holes are formed in the circular bearing disc. According to the collimator, when the same collimation effect is achieved, more gamma rays can enter the detector, and the high-efficiency gamma ray imaging requirement is met.

Description

technical field [0001] The invention belongs to the technical field of gamma ray detection and imaging, and relates to a gamma ray collimator based on an equilateral triangle that matches a pixel detector. Specifically, in order to measure the gamma ray activity, the distribution of gamma radiation sources, etc., the gamma ray emitted to the space 4π direction when the radionuclide decays is collimated, so that the ray parallel to the collimation hole is incident on the detector and then be probed. Background technique [0002] With the development of science and technology, radionuclides are widely used in nuclear power, nuclear medicine, nuclear safety and other fields. Collimators are used in conjunction with radiation detectors in the field of radiation detection to constrain the incident direction of gamma rays, and are an indispensable device for determining the shape, distribution and intensity of radiation sources. [0003] Common configurations of collimators incl...

AI Technical Summary

Problems solved by technology

However, the tungsten plate is hard and brittle, and brittle fractures often occur at thin-walled parts; the stereotype is soft, and the collimation hole is easily deformed during processing, so the collimator processed by the traditional method has low yield, high cost, and complicated process.

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