CN220626673U - Scintillator detector with electromagnetic interference shielding function - Google Patents
Scintillator detector with electromagnetic interference shielding function Download PDFInfo
- Publication number
- CN220626673U CN220626673U CN202322218301.9U CN202322218301U CN220626673U CN 220626673 U CN220626673 U CN 220626673U CN 202322218301 U CN202322218301 U CN 202322218301U CN 220626673 U CN220626673 U CN 220626673U
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- scintillator
- electromagnetic
- glass
- photoelectric device
- electromagnetic shielding
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- 239000011521 glass Substances 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims description 9
- 230000005693 optoelectronics Effects 0.000 claims description 7
- 239000005340 laminated glass Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 4
- 239000007822 coupling agent Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000011109 contamination Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- Measurement Of Radiation (AREA)
Abstract
The utility model discloses a scintillator detector with an electromagnetic interference shielding function, which relates to the technical field of detection equipment and comprises a scintillator, a photoelectric device and a rear-end electronic circuit, wherein electromagnetic shielding glass is arranged at the rear end of the scintillator, the electromagnetic shielding glass is connected with the photoelectric device, and the photoelectric device is electrically connected with the rear-end electronic circuit. The utility model not only increases the electromagnetic shielding effect, but also can meet the requirement of coupling fluorescence generated by the scintillator to the photoelectric device, and avoids the problem that the interference or even damage of the electronic circuit at the rear end of the detector is easy to cause when various electromagnetic phenomena exist.
Description
Technical Field
The utility model relates to the technical field of detection equipment, in particular to a scintillator detector with an electromagnetic interference shielding function.
Background
Electromagnetic compatibility (EMC, electromagnetic Compatibility) refers to the ability of a device or system to operate satisfactorily in its electromagnetic environment and not create intolerable electromagnetic interference with any device in its environment. Electromagnetic interference EMI (Electromagnetic Interference) is generated as a result of electromagnetic interference sources transferring energy to sensitive systems via coupling pathways, which may cause interference or even damage to circuits or equipment. The scintillator detector is one of the most widely applied nuclear radiation detectors, can detect charged particles or neutral particles (neutrons and gamma rays), can meet different physical requirements of quick time response, high detection efficiency, high sensitivity, high energy resolution, good position resolution and the like, and comprises the main components of a scintillator, an optical collection system, a photoelectric device, a rear-end electronics part and the like. In scintillator detector design, the scintillator back end is often directly connected to the optoelectronic device, which is followed by a back-end electronics section (back-end electronics section refers to a series of circuits that process the electrical signal after the scintillator-generated fluorescence is photoelectrically converted by the optoelectronic device). Under the condition of various electromagnetic phenomena, the rear-end electronic part is interfered or destroyed, so that the detector can not meet the technical index requirements specified by the electromagnetic compatibility standard.
Disclosure of Invention
The utility model aims to provide a scintillator detector with an electromagnetic interference shielding function, which is used for solving the problems that the rear end of a scintillator of the scintillator detector is directly connected with a photoelectric device, the photoelectric device is then a rear-end electronics part, and the rear-end electronics part of the detector is easy to interfere or even destroy when various electromagnetic phenomena exist.
The utility model solves the problems by the following technical proposal:
the scintillator detector with the electromagnetic interference shielding function comprises a scintillator, a photoelectric device and a rear-end electronic circuit, wherein electromagnetic shielding glass is arranged at the rear end of the scintillator, the electromagnetic shielding glass is connected with the photoelectric device, and the photoelectric device is electrically connected with the rear-end electronic circuit.
The principle of the electromagnetic shielding glass is mainly that when electromagnetic waves reach the electromagnetic shielding glass, the electromagnetic shielding glass reflects and absorbs. The reflection of energy generated when electromagnetic waves reach the surface of the shielding glass is mainly caused by inconsistent wave impedance of the medium and the metal, and the larger the difference between the medium and the metal is, the larger the loss caused by reflection is. Whereas the reflection is frequency dependent, the lower the frequency the better the reflection. The energy absorption loss when electromagnetic waves penetrate the shielding glass is mainly caused by eddy currents, the eddy currents can generate a counter magnetic field to counteract the original magnetic field or generate heat loss, and the thicker the frequency is, the thicker the shielding body is, the larger the eddy current loss is, and the better the shielding performance is. The electromagnetic shielding glass structure can be flexibly processed and manufactured according to the size of the scintillator; the electromagnetic shielding glass has excellent electromagnetic radiation noise absorption capability and excellent electromagnetic wave absorption effect in a wide frequency domain. Because the glass has good light transmittance, the fluorescence generated by the scintillator can be well transmitted to the photoelectric device while the electromagnetic shielding effect is satisfied.
Further, the electromagnetic shielding glass is coupled with the interface of the scintillator by adopting an optical coupling agent, and the electromagnetic shielding glass has the function of removing air at the interface, reducing total reflection of photons at the interface and enabling light to be effectively transmitted to the photoelectric device.
Further, the electromagnetic shielding glass adopts laminated glass, a metal wire mesh is clamped in the laminated glass, or a metal film layer is plated on the surface (interface with a scintillator and a photoelectric device) of the electromagnetic shielding glass to play a role in shielding, so that the incompleteness of shielding is compensated, and the shielding efficiency is improved.
Compared with the prior art, the utility model has the following advantages:
(1) The utility model not only increases the electromagnetic shielding effect, but also can meet the requirement of coupling fluorescence generated by the scintillator to the photoelectric device, and avoids the problem that the interference or even damage of the electronic part at the rear end of the detector is easy to cause when various electromagnetic phenomena exist.
(2) The electromagnetic shielding glass can be designed according to actual conditions, for example, the size of the scintillator is considered, the size of the photoelectric device is customized, electromagnetic interference shielding in various types of scintillator detectors can be met, and the electromagnetic shielding glass can be normally used in a complex electromagnetic environment.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
wherein, 1-scintillator; 2-electromagnetic shielding glass; 3-optoelectronic devices; 4-back-end electronics.
Detailed Description
The present utility model will be described in further detail with reference to examples, but embodiments of the present utility model are not limited thereto.
Examples:
referring to fig. 1, a scintillator detector with electromagnetic interference shielding function includes a scintillator 1, an optoelectronic device 3 and a back-end electronic circuit 4, wherein an electromagnetic shield 2 is installed at the back end of the scintillator 1, the electromagnetic shield glass 2 is connected with the optoelectronic device 3, and the electromagnetic shield glass 3 is electrically connected with the back-end electronic circuit 4.
The principle of the electromagnetic shielding glass is mainly that when electromagnetic waves reach the electromagnetic shielding glass, the electromagnetic shielding glass reflects and absorbs. The reflection of energy generated when electromagnetic waves reach the surface of the shielding glass is mainly caused by inconsistent wave impedance of the medium and the metal, and the larger the difference between the medium and the metal is, the larger the loss caused by reflection is. Whereas the reflection is frequency dependent, the lower the frequency the better the reflection. The energy absorption loss when electromagnetic waves penetrate the shielding glass is mainly caused by eddy currents, the eddy currents can generate a counter magnetic field to counteract the original magnetic field or generate heat loss, and the thicker the frequency is, the thicker the shielding body is, the larger the eddy current loss is, and the better the shielding performance is. The electromagnetic shielding glass structure can be flexibly processed and manufactured according to the size of the scintillator; the electromagnetic shielding glass has excellent electromagnetic radiation noise absorption capability and excellent electromagnetic wave absorption effect in a wide frequency domain. Because the glass has good light transmittance, the fluorescence generated by the scintillator can be well transmitted to the photoelectric device while the electromagnetic shielding effect is satisfied.
Further, the electromagnetic shielding glass is coupled with the interfaces of the scintillator and the photoelectric device respectively by adopting an optical coupling agent, and the electromagnetic shielding glass has the functions of removing air at the interfaces, reducing total reflection of photons at the interfaces and enabling light to be effectively transmitted to the photoelectric device.
Further, the electromagnetic shielding glass adopts laminated glass, a metal wire mesh is clamped in the laminated glass, or a metal film layer is plated on the surface (interface with a scintillator and a photoelectric device) of the electromagnetic shielding glass to play a role in shielding, so that the incompleteness of shielding is compensated, and the shielding efficiency is improved.
When the scintillator adopts a beta surface contamination instrument plastic scintillator, the photoelectric device adopts an SiPM array, and the method can be applied to the beta surface contamination instrument.
Although the utility model has been described herein with reference to the above-described illustrative embodiments thereof, the above-described embodiments are merely preferred embodiments of the present utility model, and the embodiments of the present utility model are not limited by the above-described embodiments, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure.
Claims (4)
1. The scintillator detector with the electromagnetic interference shielding function comprises a scintillator, an optoelectronic device and a rear-end electronic circuit, and is characterized in that electromagnetic shielding glass is arranged at the rear end of the scintillator, the electromagnetic shielding glass is connected with the optoelectronic device, and the optoelectronic device is electrically connected with the rear-end electronic circuit.
2. The scintillator detector with electromagnetic interference shielding function of claim 1, wherein the electromagnetic shielding glass is coupled with the scintillator interface by an optical coupling agent.
3. The scintillator detector with electromagnetic interference shielding function according to claim 2, wherein the electromagnetic shielding glass is laminated glass, and a wire mesh is added into the laminated glass.
4. The scintillator detector with electromagnetic interference shielding function according to claim 2, wherein the surface of the electromagnetic shielding glass is plated with a metal film layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322218301.9U CN220626673U (en) | 2023-08-17 | 2023-08-17 | Scintillator detector with electromagnetic interference shielding function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322218301.9U CN220626673U (en) | 2023-08-17 | 2023-08-17 | Scintillator detector with electromagnetic interference shielding function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220626673U true CN220626673U (en) | 2024-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322218301.9U Active CN220626673U (en) | 2023-08-17 | 2023-08-17 | Scintillator detector with electromagnetic interference shielding function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220626673U (en) |
-
2023
- 2023-08-17 CN CN202322218301.9U patent/CN220626673U/en active Active
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