Scintillation crystal unit sheet, array module, and detector

Abstract

The invention discloses a scintillation crystal unit sheet, an array module, and a detector. The scintillation crystal unit sheet comprises a scintillation crystal and a wrapping body. The wrapping body is provided with at least one concave part, and the scintillation crystal is disposed in the concave part. A scintillation crystal array is formed arranging a plurality of crystal units according to a preset design to form crystal unit sheets, and the crystal unit sheets are arranged to form the crystal array module. Each of the crystal unit sheets is formed by disposing each crystal unit on a reflection film in a wrapped manner, and then epoxy glue is used for solidification. The crystal unit sheets are arranged according to the preset design to form the array module, and are solidified by using the epoxy glue. A production method of a scintillation crystal detector array module has advantages of high flexibility, tidy arrangement, compact structure, and easy production.

Description

technical field [0001] The application relates to a scintillation crystal detector array module, which belongs to the field of scintillation crystal detection. Background technique [0002] Scintillation crystal detector is a scintillation detector that uses the flash of ionizing radiation to detect in certain substances. It has the characteristics of high detection efficiency and short resolution, and is widely used in nuclear medicine, safety inspection, high-energy physics and cosmic ray detection. researching. Scintillation crystal detectors usually use scintillation crystals that can effectively block and absorb electromagnetic radiation and produce luminescence with electromagnetic radiation as detection materials. The scintillation crystal detector module is composed of some single crystal arrays of the same size, and a reflective film is sandwiched between each crystal to achieve the light splitting effect, which is used to identify the position of each crystal. ...

AI Technical Summary

Problems solved by technology

Liquid photosensitive curing glue or epoxy glue is usually used when pasting the crystal sheet and the reflective film. Before the glue is cured, the crystals inside the module will easily slip due to mutual extrusion and friction, resulting in offset.

This will make the scintillation crystal detector module partially unable to identify the position of the crystal, resulting in defective products

During the production process, the sliding problem of the reflective film in the scintillation crystal module cannot be found with the naked eye, nor can it be observed from the outside with the help of an observation instrument. We can only wait for the UV glue or epoxy glue to cure and use experimental methods to measure it. In addition, there is no other better way to deal with the sliding problem of the reflective film in the scintillation crystal array during the production process

After the glue was cured, it was found that the reflective film had slipped and shifted. At this time, it was no longer possible to take effective remedial measures for the scintillation crystal module.

[0005] In addition, there is another problem in the conventional technology, the formed square module is prone to cutting size deviation during the cutting process

At present, most of the multi-wire cutting machines used in crystal cutting have the problem that the cutting size of the long length will be offset, and this problem is due to mechanical reasons, which cannot be overcome by design or tooling

Therefore, it will be difficult to solve the problem of cutting size deviation produced by conventional technology, and such deviation will make the whole piece cut out unusable, resulting in a large number of waste pieces

This will greatly increase the production cost, and ultimately affect the production success rate of the array module

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