CN206161872U - Transient state radiation does appearance - Google Patents
Transient state radiation does appearance Download PDFInfo
- Publication number
- CN206161872U CN206161872U CN201621233680.2U CN201621233680U CN206161872U CN 206161872 U CN206161872 U CN 206161872U CN 201621233680 U CN201621233680 U CN 201621233680U CN 206161872 U CN206161872 U CN 206161872U
- Authority
- CN
- China
- Prior art keywords
- photomultiplier
- circuit
- signal processing
- metal shell
- organic scintillator
- Prior art date
- 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 - Fee Related
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- Measurement Of Radiation (AREA)
Abstract
The utility model discloses a transient state radiation does appearance, including the probe that has organic scintillator and photomultiplier, the probe sets up inside sealed enclosure, inside gate integrating circuit, analog to digital conversion circuit and the digital signal processing circuit who connects gradually that set up of sealed enclosure, photomultiplier and gate integrating circuit connect, digital signal processing circuit's output is worn out sealed enclosure connects with the display screen that sets up outside sealed enclosure, sealed enclosure is inside still to set up power supply circuit, and power supply circuit is connected with gate integrating circuit, analog to digital conversion circuit, digital signal processing circuit, display screen and photomultiplier respectively. The utility model discloses combine organic scintillator and photomultiplier, realize carrying out real -time supervision to the short pulse radiation dosage of nanosecond and subnanosecond, photomultiplier and gate integrating circuit, analog to digital conversion circuit and digital signal processing circuit, display screen is connected gradually, transient state radiation does and next through showing that screen display demonstrates can be obtained in real time.
Description
Technical field
The utility model is related to actinometry field, is to be related to a kind of transient radiation dosemeter specifically.
Background technology
Since X-ray being found before more than 100 years,（International Atomic Energy Agency writes, and Wang Xiaofeng, Zhou Qifu etc. are translated,《Spoke
Penetrate, human and environment》2006）, people exploring always effective approach by radiation application in production, life and health care neck
Domain, while also actively seeking radiation proof technical measures, makes every effort to be preferably minimized the harm of radiation.Radiation dose monitoring is
Radiation proof basis and premise, in UNSCEAR's periodic review environment crowd is illuminated
Natural and man-made radiation source, and these relevant risks for causing of source, and periodically report that it grinds to the United Nations General Assembly
Study carefully achievement.At present, known dosimeter species is various, energy response scope typically at 30 kiloelectron-volts to 3 million electro-volts,
According to the difference and the difference of applied environment of tested dose of radiation, different types of dosimeter can be selected.According to selected
The difference of detector, dosimeter mainly has four types, is based respectively on ionisation chamber, sodium iodide crystal, Geiger-Miller and counts
Pipe and Annual dose.Wherein detected radiation is converted into electric current output by first three detector, and output current is again at Jing
Reason is converted into corresponding dose of radiation；Annual dose is a kind of thermoluminescence material, after by ionizing radiation irradiation, is produced
Electronics and hole are given birth to, wherein some can be captured in metastable state by trap, as dose of radiation increases, captureed by defect
That what is obtained is ionized the electronics and number of cavities increase for exciting, and when material is heated, electronics returns ground state, and what is be accompanied by is energy
Release, a portion is in the form of visible ray or ultraviolet light（Thermoluminescence）Release, thermoluminescence intensity and integrated radiation dose
It is directly proportional.
But, currently known conventional radiation dosemeter is to carry out integral dose monitoring to continuous radiation, is added up
Shortest time be some milliseconds, radiation or the dose of radiation of natural radiation source accumulation that main measurement accelerator is produced, it is impossible to
Real-time monitoring transient radiation dosage.But the research of nuclear medicine shows, the high transient radiation of radiation dose rate cause gene mutation and
The possibility of gene defect is bigger.In recent years, ultra-short pulse laser technology quickly grows, ultra-short pulse laser and material phase interaction
The extremely short transient radiation of pulse can be produced with experiment, usual pulse width is several nanoseconds, and accumulated dose is little, but due to pulse width
Very narrow so that radiation dose rate is very high, the infringement to biological tissue is even more serious.Existing traditional dosimeter cannot be right
The short pulse transient radiation dosage of nanosecond scale carries out real-time monitoring, and cannot in real time show monitoring result.
Utility model content
To overcome the problems referred to above of the prior art, the utility model to provide design ingenious, simple structure transient radiation
Dosemeter and its application process.
To achieve these goals, the technical solution adopted in the utility model is as follows：
A kind of transient radiation dosemeter, including the probe with organic scintillator and photomultiplier, the probe is arranged
Inside containment housing, Gated integrator, the analog to digital conversion circuit sum being sequentially connected is also set up inside the containment housing
Word signal processing circuit；The photomultiplier and the Gated integrator connect；The digital signal processing circuit it is defeated
Go out end and pass the containment housing and the display screen connection being arranged at outside containment housing；Power supply is also set up inside the containment housing
Circuit, the power circuit respectively with Gated integrator, analog to digital conversion circuit, digital signal processing circuit, display screen and light
Electric multiplier tube connection.The probe also includes metal shell and circular quartz glass；The organic scintillator is placed in metal shell
It is internal；The metal shell end face is provided with the circular window of circular quartz glass capsulation, and other end is fixed on described
Containment housing interior side face；The photomultiplier is cylindrical, and its photocathode is by circular quartz glass and described has
Machine scintillator is coupled.
Specifically, the organic scintillator and metal shell are cylindrical, and the metal shell tight residence is stated
Organic scintillator.
Preferably, the organic scintillator is liquid scintillator or plastic scintillant；The metal shell is aluminum shell
Body.
Specifically, the cylinder surface of the photomultiplier is provided with the screen layer of shielding electromagnetic field.
Compared with prior art, the utility model has the advantages that：
（1）The utility model is realized to the short of nanosecond and subnanosecond using the combination of organic scintillator and photomultiplier
Impulse radiation dosage carries out real-time monitoring；Electromagnetic interference is shielded by being arranged on the screen layer of photomultiplier transit pipe surface, light is improved
The stability of electric multiplier tube；Photomultiplier is coupled with organic scintillator by circular quartz glass and improves collection faint light letter
Number ability.
（2）The utility model is electric by photomultiplier and Gated integrator, analog to digital conversion circuit and Digital Signal Processing
Road, display screen are sequentially connected, and can in real time obtain transient radiation dosage and be shown by display screen.
Description of the drawings
Fig. 1 is the utility model logical schematic.
Fig. 2 is entity structure schematic diagram of the present utility model.
Description of the drawings：1-metal shell, 2-organic scintillator, 3-circular quartz glass, 4-photomultiplier, 5-
Gated integrator, 6-analog to digital conversion circuit, 7-digital signal processing circuit, 8-display screen, 9-containment housing, 10-circle
Shape window, 11-circuit board, 12-screen layer, 13-power circuit.
Specific embodiment
With reference to the accompanying drawings and examples the utility model is described in further detail, and embodiment of the present utility model includes
But it is not limited to the following example.
Embodiment
As depicted in figs. 1 and 2, transient radiation dosemeter, including the spy with organic scintillator 2 and photomultiplier 4
Head, the probe is arranged inside containment housing 9, and the Gated integrator being sequentially connected is also set up inside the containment housing 9
5th, analog to digital conversion circuit 6 and digital signal processing circuit 7；The photomultiplier 4 and the Gated integrator 5 connect；Institute
State the output end of digital signal processing circuit 7 pass the containment housing 9 and the display screen 8 being arranged at outside containment housing 9 connect；
Also set up power circuit 13 inside the containment housing 9, the power circuit 13 respectively with Gated integrator 5, analog-to-digital conversion
Circuit 6, digital signal processing circuit 7, display screen 8 and photomultiplier 4 connect.The probe also includes metal shell 1 and circle
Shape quartz glass 3；The organic scintillator 2 is placed in inside metal shell 1；The end face of the metal shell 1 is provided with circle
The circular window 10 of the sealing of quartz glass 3, other end is fixed on the interior side face of the containment housing 9；The photomultiplier transit
Pipe 4 is cylindrical, and its photocathode is coupled by circular quartz glass 3 and the organic scintillator 2.The Gated integrator
5th, analog to digital conversion circuit 6, power circuit 13 and digital signal processing circuit 7 are arranged on the circuit board 11；The numeral letter
The output end of number process circuit 7 is by being arranged on the circuit interface connect setting of the side of containment housing 9 in containment housing lateral surface
Display screen 8；The digital signal processing circuit 7 is set up with the display screen 8 and is electrically connected.
Specifically, the organic scintillator 2 and metal shell 1 are cylindrical, the tight residence of the metal shell 1
State organic scintillator 2.
Preferably, the organic scintillator 2 is liquid scintillator or plastic scintillant；The metal shell 1 is aluminum
Housing.
Specifically, the cylinder surface of the photomultiplier 4 is provided with the screen layer 12 of shielding electromagnetic field.
The display screen 8 shows the radiation agent value of tested ultrashort wave radiation.
Above-described embodiment is only preferred embodiment of the present utility model, not to the restriction of the utility model protection domain,
In every case design principle of the present utility model, and the change for carrying out non-creativeness work on this basis and making are adopted, all should
Belong within protection domain of the present utility model.
Claims (4)
1. a kind of transient radiation dosemeter, including the probe with organic scintillator and photomultiplier, it is characterised in that described
Probe is arranged inside containment housing, and Gated integrator, the analog-to-digital conversion being sequentially connected is also set up inside the containment housing
Circuit and digital signal processing circuit；The photomultiplier and the Gated integrator connect；The Digital Signal Processing
The output end of circuit passes the containment housing and the display screen connection being arranged at outside containment housing；The containment housing inside is also
Power circuit is set, the power circuit respectively with Gated integrator, analog to digital conversion circuit, digital signal processing circuit, aobvious
Display screen and photomultiplier connect；
The probe also includes metal shell and circular quartz glass；The organic scintillator is placed in inside metal shell；It is described
Metal shell end face is provided with the circular window of circular quartz glass capsulation, and other end is fixed in the containment housing
Portion's one side；The photomultiplier is cylindrical, and its photocathode is by circular quartz glass and the organic scintillator coupling
Close.
2. a kind of transient radiation dosemeter according to claim 1, it is characterised in that outside the organic scintillator and metal
Shell is cylindrical, and organic scintillator is stated in the metal shell tight residence.
3. a kind of transient radiation dosemeter according to claim 2, it is characterised in that the organic scintillator is that liquid dodges
Bright body or plastic scintillant；The metal shell is aluminium casing.
4. a kind of transient radiation dosemeter according to claim 3, it is characterised in that the column table of the photomultiplier
Face is provided with the screen layer of shielding electromagnetic field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621233680.2U CN206161872U (en) | 2016-11-17 | 2016-11-17 | Transient state radiation does appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621233680.2U CN206161872U (en) | 2016-11-17 | 2016-11-17 | Transient state radiation does appearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206161872U true CN206161872U (en) | 2017-05-10 |
Family
ID=58660208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621233680.2U Expired - Fee Related CN206161872U (en) | 2016-11-17 | 2016-11-17 | Transient state radiation does appearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206161872U (en) |
-
2016
- 2016-11-17 CN CN201621233680.2U patent/CN206161872U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Mianyang City, Sichuan Province, 621000 Mountain Road No. 64 Patentee after: Laser Fusion Research Center, Chinese Academy of Engineering Physics Address before: 621700 Sichuan city of Chengdu Province South Road No. 64 Patentee before: Laser Fusion Research Center, Chinese Academy of Engineering Physics |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170510 Termination date: 20201117 |