Unlock instant, AI-driven research and patent intelligence for your innovation.

Scintillator array and preparation method thereof

A scintillator and array technology, applied in the field of scintillation detectors, can solve the problems of reduced cutting precision and cutting efficiency, high proportion of scintillation medium, and increased production cost, and achieves the advantages of small material loss rate, reduced preparation cost, and simplified preparation process. Effect

Active Publication Date: 2015-11-25
宁波虔东科浩光电科技有限公司
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] ①In addition to the scintillation medium preparation equipment, it is necessary to purchase high-precision cutting equipment and carry out strict cutting processing, which greatly increases the production cost; ②The high hardness and high brittleness of the scintillation medium greatly reduce the cutting accuracy and cutting efficiency;③ The proportion of scintillation medium lost during the cutting process is high, resulting in great waste

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Scintillator array and preparation method thereof
  • Scintillator array and preparation method thereof
  • Scintillator array and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0058] The present invention also provides a method for preparing a scintillator array, which can be used to prepare the above-mentioned scintillator array, comprising the following steps:

[0059] S100: Prepare a plurality of scintillator unit green bodies by using the unit preparation mold, and obtain a plurality of scintillator unit green bodies after sintering the plurality of scintillator unit green bodies.

[0060] see Figure 5 , using the base unit preparation mold 200 to prepare the scintillator base unit green body. The base unit preparation mold 200 includes a base unit template 210 and a base unit pressing plate 220. The base unit template 210 is provided with a plurality of first powder storage cavities 212 arranged in an array structure, and the first powder storage cavities 212 are used for preparing flashing The powder of the bulk unit (ie, the unit powder); the unit pressing plate 220 is used to squeeze the unit powder in the first powder storage cavity 212 ....

Embodiment approach

[0079] As another implementation manner, the above S200 includes the following steps:

[0080] S210': Arranging a plurality of scintillator units in an array structure, and then filling an adhesive between the plurality of scintillator units.

[0081] Specifically, multiple scintillator units can be arranged into an array structure by using a combined screening plate, and then introduced into a suitable cavity; then adhesive is poured into the gaps between the multiple scintillator units.

[0082] S220': After the binder is cured, a unit carrier is formed, and a plurality of scintillator units are spliced ​​on the unit carrier to obtain a scintillator array. Since the binder has high bonding strength, after curing, multiple scintillator units are bonded together. Preferably, the binder is epoxy resin, which has better adhesion and higher light transmittance.

[0083] Preferably, when the binder is filled between multiple scintillator units, a reflective medium can be filled ...

Embodiment 1

[0089] (1) Preparation of scintillator elements

[0090]The matrix of the scintillator primitive is Y 3 Al 5 o 12 Transparent ceramics, the active ion is Pr 3+ , and Pr 3+ The doping amount is 0.15% of the molar weight of the matrix.

[0091] The preparation process is as follows: the base powder is prepared according to the composition ratio of the scintillator base; the base powder is ground, mixed and dried; the appropriate base preparation mold is selected, and the dried base powder is placed in the first In a powder storage cavity; cover the base unit pressing plate on the first powder storage cavity, apply a certain pressure, and obtain multiple scintillator base unit green bodies. The density of each scintillator element green body is 2.8g / cm 3 ; Place a plurality of scintillator element green bodies in a high-temperature furnace, sinter at 1750° C. for 2 hours, take out after cooling, and obtain a plurality of scintillator elements.

[0092] (2) Preparation of p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Cross-sectional areaaaaaaaaaaa
Heightaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a scintillator array which comprises an element carrier and a number of scintillator elements. A number of scintillator elements are spliced on the element carrier in an array structure. Each scintillator element comprises a matrix and active ions doped in the matrix. The matrix is made of ceramic. The scintillator array is formed by splicing the scintillator elements and the element carrier. When the scintillator array is prepared, mechanical cutting is not needed. A preparation process is simplified, and the preparation cost is reduced. The scintillator elements and the element carrier are separately prepared, and then are spliced. The scintillator elements and the element carrier are not molded together. The scintillator elements of different materials and the element carrier are spliced, and the scintillator array of a superior performance is acquired. The invention further discloses a scintillator array preparation method.

Description

technical field [0001] The invention relates to the field of scintillation detectors, in particular to a scintillator array and a preparation method thereof. Background technique [0002] Scintillation detector is a kind of ionizing radiation detector, which is widely used in medical, national defense, security inspection and other fields. The scintillator array is the core component of the scintillation detector, which can convert high-energy rays (X-rays / γ-rays) or charged particles into ultraviolet or visible light, and then convert the light signal into electrical energy through photon detection equipment such as photomultiplier tubes. Finally, the information on the interaction between high-energy rays and the detected matter is presented in the form of digital signals. [0003] The current fabrication process of scintillator arrays is based on the removal of bulk scintillation medium, that is, the scintillator medium is processed into arrays by cutting, grinding and o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01T1/20
Inventor 秦海明肖哲鹏蒋俊江浩川
Owner 宁波虔东科浩光电科技有限公司