Method for manufacturing crystal array of gamma-ray detector

Abstract

The invention provides a method for manufacturing a crystal array of a gamma-ray detector, relating to the technical field of gamma-ray detection imaging. The method comprises the following steps of: firstly, cutting an original crystal material into a one-piece original rectangular crystal block, and carrying out mechanical surface treatment on the original rectangular crystal block; then, bonding a light-guide medium on the lower surface of the original crystal block by using a bonding agent; cutting the original crystal block to form a crystal strip array; carrying out surface polishing treatment on each crystal strip arranged in an array; then plating or filling reflective materials in clearances among all the crystal strips; and finally, plating or wrapping the reflective materials on the upper surface and peripheral surfaces of the crystal strip array. By means of the method provided by the invention, the processing difficulty is reduced, the yield is increased, artificially made components in the traditional process are reduced, and the crystal arrays with complex structures, such as a crystal array with a multilayer dislocation structure with response depth information, and the like, are realized more conveniently.

Description

technical field [0001] The invention relates to the technical field of gamma-ray detection and imaging, in particular to a manufacturing method and a manufacturing process flow of a crystal array in a gamma-ray detector. Background technique [0002] The basic principle of gamma-ray detection imaging is: the gamma-ray source located inside the measured object (such as human organs) emits ray beams, and these ray beams pass through the measured object and project on the detector array. Electronic technology is used to read out the signal detected by the detector and collect data, and through computer analysis and processing, the distribution of gamma radiation sources inside the measured object is obtained, and displayed and presented in the form of images. Γ-ray detection imaging is a new growth point of interdisciplinary and infiltrating disciplines, which has been widely used in life science, medicine, material science, industry, national defense, transportation and securi...

AI Technical Summary

Problems solved by technology

[0007] 1. Thousands or even tens of thousands of crystal strips need to be cut, surface processed and wrapped with reflective materials. The workload is huge and the working hours are long

And there is an inevitable error damage rate in the processing process, which will increase the overall production cost

[0008] 2. Thousands or even tens of thousands of crystal strips need to be manually bonded and spliced. The processing accuracy is high, the processing is very difficult, time-consuming and labor-intensive, and the error damage rate during processing is also high.

[0009] 3. As the size of crystal strips becomes smaller and smaller, the processing objects become more and more refined, and the total quantity will increase accordingly, which will lead to a significant increase in processing difficulty and production costs

[0010] 4. Since the crystal array used in each detector is hand-made, the individual differences of the detectors are relatively large, and it is difficult to ensure the consistency of the detectors through process standards

This will increase the difficulty and workload of detector performance calibration and calibration, which will eventually lead to an increase in the production cost of the imaging system

[0011] To sum up, the existing detector crystal array manufacturing method is relatively complicated, with heavy workload, difficult processing, high design and production costs, long processing and manufacturing cycle, and difficult to standardize the production process and process.

Images