CN2690898Y - Detector for wave length conversion optical fiber of punching light guide type Na I matching - Google Patents
Detector for wave length conversion optical fiber of punching light guide type Na I matching Download PDFInfo
- Publication number
- CN2690898Y CN2690898Y CN 200420049308 CN200420049308U CN2690898Y CN 2690898 Y CN2690898 Y CN 2690898Y CN 200420049308 CN200420049308 CN 200420049308 CN 200420049308 U CN200420049308 U CN 200420049308U CN 2690898 Y CN2690898 Y CN 2690898Y
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- CN
- China
- Prior art keywords
- optical fiber
- light guide
- conversion optical
- detector
- wave length
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Measurement Of Radiation (AREA)
Abstract
The utility model belongs to the monitoring and measuring field of the nuclear physics, specifically relating to a detector for wave length conversion optical fiber of punching light guide type Na I matching. The front face of the Na I flash body is provided with a light guide which is provided with a hole in which a wave length conversion optical fiber is arranged, the front face of the light guide is provided with a connecting piece which is provided with a hole, the part of the wave length conversion optical fiber outside the light guide is arranged in the connecting piece and is connected with an optical fiber through the connecting piece, the other end of the optical fiber is provided with a photomultiplier tube, and an aluminum shell is arranged outside the Na I flash body, the light guide and the connecting piece. The advantages of the utility model are that when the equipment is used, the flash body and the photomultiplier tube are separated, the flash body is sealed in the aluminum shell, and a light signal emitted by the Na I is transmitted to the photomultiplier tube by the optical fiber so as to avoid the detector being affected by electromagnetic interference or high-temperature and high-humidity environments; secondly, the Na I can generate the air slaking due to being naked in the air, and the Na I has high technical requirement and expenses when directly punched, so the detector reduces the cost when the light guide is punched.
Description
Technical field
The utility model belongs to nuclear physics control survey field, is specifically related to the detector that a kind of guide type NaI that bores a hole mixes wavelength Conversion optical fiber.
Background technology
The present invention improves to form on the basis of traditional NaI Radiation monitoring detector.Existing NaI Radiation monitoring detector normally NaI scintillator directly links to each other with photomultiplier, and the light that scintillator sends is directly received by photomultiplier.Its shortcoming is that detector that scintillator and photomultiplier are formed enters radiation field simultaneously and monitors, if radiation field is a hot and humid environment, or there is strong magnetic interference, will makes measurement result inaccurate, reduce the serviceable life of photomultiplier, be unfavorable for the Radiation monitoring under the complex environment.
Summary of the invention
The purpose of this utility model is the defective at traditional NaI Radiation monitoring detector, and the detector that provides a kind of new perforation guide type NaI that avoids the radiation field electromagnetic interference (EMI) to mix wavelength Conversion optical fiber is put.
A kind of NaI Radiation monitoring detector comprises into NaI scintillator, photoconduction, aluminum hull, reflector layer, wavelength Conversion optical fiber, web member, optical fiber, photomultiplier.Be provided with photoconduction in NaI scintillator front, have a hole in photoconduction, wavelength Conversion optical fiber is placed the hole, be provided with reflector layer in the outside of photoconduction, be provided with web member in the photoconduction front, perforate in the web member is connected with optical fiber by web member wavelength Conversion optical fiber.Outside at NaI scintillator, photoconduction, wavelength Conversion optical fiber, web member is provided with aluminum hull, and aluminum hull is sealed in inside to NaI scintillator, photoconduction, wavelength Conversion optical fiber, web member.Have a hole in the front portion of aluminum hull, optical fiber passes this hole and links to each other with web member, is provided with photomultiplier at the other end of optical fiber.
Advantage of the present utility model is that scintillator separates with photomultiplier when this equipment of use, scintillator is sealed in the aluminum hull, the optical signals Optical Fiber Transmission that the NaI scintillator sends is given photomultiplier, has so just avoided radiation field to have the influence to detector of electromagnetic interference (EMI) or hot and humid environment.Secondly the NaI scintillator exposes in air deliquescence can take place, directly the technical requirement of perforation is very high on the NaI scintillator, expense is also very high, the utility model is to bore a hole on photoconduction, utilize photoconduction to give wavelength Conversion optical fiber with the light transmission that the NaI scintillator sends, perforation is very easy on photoconduction, so just greatly reduces cost.
Description of drawings
Accompanying drawing is the side cut-away view that perforation guide type NaI mixes the detector of wavelength Conversion optical fiber.
Among the figure:
1. aluminum hull, 2.NaI scintillator, 3. reflector layer, 4. photoconduction, 5. wavelength Conversion optical fiber, 6. web member, 7. optical fiber, 8 photomultipliers.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is further elaborated.
Be provided with photoconduction in the front of NaI scintillator as shown in fig. 1.In photoconduction, worn a hole in the heart, wavelength Conversion optical fiber has been inserted in the hole; Outside at photoconduction is provided with reflector layer.The light that NaI sends has been passed to photoconduction, light in the photoconduction enters wavelength Conversion optical fiber, wavelength Conversion optical fiber is a kind of special fiber, and it can not only change the light wavelength that NaI sends, and only enters wavelength Conversion optical fiber by the side and penetrate from the end face of wavelength Conversion optical fiber; Outside at photoconduction is provided with reflector layer, and the light that reflector layer can make NaI send is passed to wavelength Conversion optical fiber more; Wavelength Conversion optical fiber is transferred to light conduction and receiving unit (optical fiber and photomultiplier) to the light that the NaI that is received by the side sends from end face.Be provided with the web member of plastic material in the photoconduction front, also can use other lighttight products of the same type; Web member couples together wavelength Conversion optical fiber and optical fiber; Outside at NaI scintillator, photoconduction, wavelength Conversion optical fiber, web member is provided with aluminum hull, and aluminum hull is sealed in inside to NaI scintillator, photoconduction, wavelength Conversion optical fiber, web member.Have a hole in the front portion of aluminum hull, optical fiber passes this hole and links to each other with web member, is provided with photomultiplier at the other end of optical fiber.
Claims (1)
1. NaI Radiation monitoring detector, comprise NaI scintillator, photomultiplier and aluminum hull, it is characterized in that: be provided with photoconduction in NaI scintillator front, perforate in the photoconduction places the hole with wavelength Conversion optical fiber, is provided with web member in the photoconduction front, perforate in the web member, the part of wavelength Conversion optical fiber outside photoconduction places web member and is connected with optical fiber by web member, is provided with photomultiplier at the other end of optical fiber, is provided with aluminum hull outside NaI scintillator, photoconduction, web member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420049308 CN2690898Y (en) | 2004-04-20 | 2004-04-20 | Detector for wave length conversion optical fiber of punching light guide type Na I matching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420049308 CN2690898Y (en) | 2004-04-20 | 2004-04-20 | Detector for wave length conversion optical fiber of punching light guide type Na I matching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2690898Y true CN2690898Y (en) | 2005-04-06 |
Family
ID=34672262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420049308 Expired - Lifetime CN2690898Y (en) | 2004-04-20 | 2004-04-20 | Detector for wave length conversion optical fiber of punching light guide type Na I matching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2690898Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108398713A (en) * | 2017-02-08 | 2018-08-14 | 中国辐射防护研究院 | Whole-body counter calibrating patterns holder is irradiated in a kind of |
| CN109073446A (en) * | 2016-01-22 | 2018-12-21 | Vega美洲公司 | Karyolymph position sensing instrument flexible |
| CN113167915A (en) * | 2018-11-30 | 2021-07-23 | 法国国家科学研究中心 | Minimally invasive ionizing radiation detector |
-
2004
- 2004-04-20 CN CN 200420049308 patent/CN2690898Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109073446A (en) * | 2016-01-22 | 2018-12-21 | Vega美洲公司 | Karyolymph position sensing instrument flexible |
| CN108398713A (en) * | 2017-02-08 | 2018-08-14 | 中国辐射防护研究院 | Whole-body counter calibrating patterns holder is irradiated in a kind of |
| CN113167915A (en) * | 2018-11-30 | 2021-07-23 | 法国国家科学研究中心 | Minimally invasive ionizing radiation detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140420 Granted publication date: 20050406 |