CN205941924U - Online remote gamma radiation dosage measurement system of OSL - Google Patents
Online remote gamma radiation dosage measurement system of OSL Download PDFInfo
- Publication number
- CN205941924U CN205941924U CN201620915311.5U CN201620915311U CN205941924U CN 205941924 U CN205941924 U CN 205941924U CN 201620915311 U CN201620915311 U CN 201620915311U CN 205941924 U CN205941924 U CN 205941924U
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- osl
- optical fiber
- online remote
- measurement system
- remote gamma
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Abstract
The utility model discloses an online remote gamma radiation dosage measurement system of OSL, this measurement system include two parts in the quick -witted case and probe, carry out physics through optic fibre between two parts and connect and transmission signal. Excitation light source, photon counter, light filter group, camera bellows are drawn together to the machine case and bag, lead to for the fiber optic coupling optic fibre between excitation light source, photon counter and the probe and are connected. The probe is the millimeter magnitude including OSL detector and receipts optical lens, probe size. The utility model discloses an online remote gamma radiation dosage measurement system of OSL utilizes the OSL technique to carry out real -time supervision to radiating the scene, can realize the quick on line measurement and the remote measurement of gamma radiation dosage, and especially, this measurement system still can be used to the radiation does monitoring of radiotherapy in -process to the receipt at human focus position.
Description
Technical field
This utility model belongs to field of nuclear radiation measurement and in particular to OSL remote gamma-radiation dosimetry system online.
Background technology
OSL（Optically Stimulated Luminescence）Release light also known as light, be 21 century luminescence dosimetry
Forward position, is a new developing direction of Radiation monitoring.The detecting material of ray is Al2O3:C powder.Each OSL detector
（Detecting element）It is a circular Al2O3:C disk, it is to clamp Al by two panels mylar pressure2O3:C powder is constituted.Ray
Interact with detector and produce electron hole pair, trap trapped electron hole pair, the detector that light radiation is crossed, in trap
Electron excitation transits to conduction band, and free electron and hole meet luminous in the centre of luminescence, and luminous intensity is directly proportional to absorbed dose.
By control exciting light intensity, can to photoluminescent detector multiple reading, replicate analysis.
At present, OSL technology is also mainly used in personal dose monitoring and laboratory off-line measurement in field of nuclear radiation measurement, and
Can not accomplish to measure in real time it is impossible to carry out on-line monitoring.
Content of the invention
Technical problem to be solved in the utility model is to provide a kind of OSL remote gamma-radiation dosage measurement system online
System.
OSL of the present utility model remote gamma-radiation dosimetry system online, is characterized in：Described measuring system bag
Include cabinet and probe assembly, cabinet and probe assembly are connected by optical fiber III；
The optical fiber I that arrangement excitation source and camera bellows in described cabinet, the optical fiber II that excitation source is drawn and camera bellows are drawn
Carry out optical fiber coupling in optical fiber coupling；Described camera bellows is closing space I, and the leading portion of closing space I is photon counter, closing
The back segment in space I is filter set；
Described probe assembly is closing space II, and the leading portion of closing space II is to receive optical lens, the back segment of closing space I
For OSL detector；
Described optical fiber is coupled as 7 core fibre Y-branch couplings；
The length of described optical fiber III is less than or equal to 10m.
Described excitation source is one of green laser or red laser, green laser or red laser
Peak power be 300W, power continuously adjustabe.
The lasing mode of described excitation source is one of constant type or pulsed.
Described filter set is formed by bandpass filter and edge filter tandem.
The sheathing material of described probe assembly is metallic aluminium, and shell sizes are millimeter magnitude.
Described photon counter is single photon counter.
In actinometry, probe assembly is put to measurement point, opens excitation source, optical excitation signal pass through optical fiber II,
Optical fiber III transmit to OSL detector and excite its light, the light sending release optical signal received optical lens focus on send optical fiber III to,
Pass through optical fiber III again, optical fiber I transmits to filter set, filter set filters out exciting light and its scattered light that light is released in optical signal
Spectrum composition, pure light is released optical signal transmission and counts to photon counter, obtain the sign of dosage.By controlling exciting light letter
Number intensity, OSL detector repeatedly can be read, and in OSL detector, the light of storage is released optical signal and hardly lost,
Release, using light, the characteristic that light technology repeats to read, by controlling the tranmitting frequency of excitation source, realize light and release the survey of light on-line continuous
Amount.
Remote gamma-radiation dosimetry system is carried out to radiation scene OSL of the present utility model using OSL technology online
Real-time monitoring, is capable of fast on-line measurement and the telemeasurement of gamma-radiation dosage, and particularly, this measuring system also can use
The radiation dose monitoring to the reception at body foci position in Patients During Radiotherapy.
Brief description
Fig. 1 is OSL of the present utility model remote gamma-radiation dosimetry system structural representation online；
In figure, 1. excitation source 2. camera bellows 3. photon counter 4. filter set 5. optical fiber coupling 6. receipts light
Lens 7.OSL detector 8. probe assembly, 9. optical fiber, I 10. optical fiber, II 11. optical fiber III 12. cabinet.
Specific embodiment
Describe this utility model below by drawings and Examples in detail.
As shown in figure 1, OSL of the present utility model remote gamma-radiation dosimetry system includes cabinet 12 and probe online
Assembly 8, cabinet 12 and probe assembly 8 pass through optical fiber III 11 and connect；
Arrangement excitation source 1 and camera bellows 2 in described cabinet 12, the optical fiber II 10 that excitation source 1 is drawn and camera bellows 2 are drawn
Optical fiber I 95 carry out optical fiber coupling in optical fiber coupling；Described camera bellows 2 is closing space I, and the leading portion of closing space I is photon
Enumerator 3, the back segment of closing space I is filter set 4；
Described probe assembly 8 is closing space II, and the leading portion of closing space II is to receive optical lens 6, after closing space I
Section is OSL detector 7；
Described optical fiber coupling 5 is 7 core fibre Y-branch couplings；
The length of described optical fiber III is less than or equal to 10m.
Described excitation source 1 is one of green laser or red laser, green laser or red laser
The peak power of device is 300W, power continuously adjustabe.
The lasing mode of described excitation source 1 is one of constant type or pulsed.
Described filter set 4 is formed by bandpass filter and edge filter tandem.
The sheathing material of described probe assembly 8 is metallic aluminium, and shell sizes are millimeter magnitude.
Described photon counter 3 is single photon counter.
Embodiment 1
The probe segment of the probe assembly 8 of the present embodiment is a small cylinder, and size is about 10mm × Ф 8mm.
Described excitation source 1 is the green laser of wavelength 532nm, and lasing mode is constant type.
Described photon counter 3 is shore pine CH254 type photon counter, and spectral response range is 300～650nm, meter
Digit rate is linearly equal to greatly 2 × 106/s.
Described filter set 4 is by the Boya B-370 bandpass filter for 7.5mm for the thickness and cut-off（532 or 630）nm
The optical filter tandem of wavelength is constituted.
The shell of described probe assembly 8 adopt metal aluminium material, cylindrical hollow, overall dimensions about 10mm × Ф 8mm,
Thickness about 2mm.
Described optical fiber I 9, optical fiber II 10, optical fiber III 11 diameter about 2mm.
Described optical fiber coupling（5）Couple for 7 core fibre Y-branch.
Described OSL detector 7 is the single-point dosage piece of Landauer, and sensitive material is Al2O3:C, to gamma-ray energy
Investigative range is 0.01～1.0 × 104mSv.
Embodiment 2
The embodiment of the present embodiment is substantially the same manner as Example 1, differs primarily in that：Described lasing mode is
Pulsed.
Embodiment 3
The embodiment of the present embodiment is substantially the same manner as Example 1, differs primarily in that：Described excitation source 1 is ripple
The red laser of long 630nm.
Embodiment 4
The embodiment of the present embodiment is substantially the same manner as Example 3, differs primarily in that：Described lasing mode is
Pulsed.
This utility model is not limited to above-mentioned specific embodiment, and person of ordinary skill in the field visualizes from above-mentioned
Send out, without performing creative labour, done a variety of conversion, all fall within protection domain of the present utility model.
Claims (5)
1.OSL online remote gamma-radiation dosimetry system it is characterised in that：Described measuring system includes cabinet（12）With
Probe assembly（8）, cabinet（12）And probe assembly（8）By optical fiber III（11）Connect；
Described cabinet（12）Middle arrangement excitation source（1）And camera bellows（2）, excitation source（1）The optical fiber II drawn（10）With dark
Case（2）The optical fiber I drawn（9）In optical fiber coupling（5）Carry out optical fiber coupling；Described camera bellows（2）For closing space I, closing sky
Between I leading portion be photon counter（3）, the back segment of closing space I is filter set（4）；
Described probe assembly（8）For closing space II, the leading portion of closing space II is to receive optical lens（6）, after closing space I
Section is OSL detector（7）；
Described optical fiber coupling（5）Couple for 7 core fibre Y-branch；
The length of described optical fiber III is less than or equal to 10m.
2. OSL according to claim 1 online remote gamma-radiation dosimetry system it is characterised in that：Described swashs
Luminous source（1）For one of green laser or red laser, the peak power of green laser or red laser is
300W, power continuously adjustabe.
3. OSL according to claim 1 online remote gamma-radiation dosimetry system it is characterised in that：Described swashs
Luminous source（1）Lasing mode be one of constant type or pulsed.
4. OSL according to claim 1 online remote gamma-radiation dosimetry system it is characterised in that：Described filter
Mating plate group（4）Formed by bandpass filter and edge filter tandem.
5. OSL according to claim 1 online remote gamma-radiation dosimetry system it is characterised in that：Described photon
Enumerator（3）For single photon counter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620915311.5U CN205941924U (en) | 2016-08-23 | 2016-08-23 | Online remote gamma radiation dosage measurement system of OSL |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620915311.5U CN205941924U (en) | 2016-08-23 | 2016-08-23 | Online remote gamma radiation dosage measurement system of OSL |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205941924U true CN205941924U (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620915311.5U Expired - Fee Related CN205941924U (en) | 2016-08-23 | 2016-08-23 | Online remote gamma radiation dosage measurement system of OSL |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093997A (en) * | 2016-08-23 | 2016-11-09 | 中国工程物理研究院核物理与化学研究所 | OSL remote gamma-radiation dosimetry system online |
| CN107167831A (en) * | 2017-05-18 | 2017-09-15 | 哈尔滨工程大学 | It is a kind of can emission-type at a distance can distribution measuring amount of radiation detector |
-
2016
- 2016-08-23 CN CN201620915311.5U patent/CN205941924U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093997A (en) * | 2016-08-23 | 2016-11-09 | 中国工程物理研究院核物理与化学研究所 | OSL remote gamma-radiation dosimetry system online |
| CN107167831A (en) * | 2017-05-18 | 2017-09-15 | 哈尔滨工程大学 | It is a kind of can emission-type at a distance can distribution measuring amount of radiation detector |
| CN107167831B (en) * | 2017-05-18 | 2019-03-05 | 哈尔滨工程大学 | It is a kind of can emission-type at a distance can distribution measuring amount of radiation detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20190823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |