CN110148483A - A kind of neutron beam adjustment device - Google Patents
A kind of neutron beam adjustment device Download PDFInfo
- Publication number
- CN110148483A CN110148483A CN201910469982.1A CN201910469982A CN110148483A CN 110148483 A CN110148483 A CN 110148483A CN 201910469982 A CN201910469982 A CN 201910469982A CN 110148483 A CN110148483 A CN 110148483A
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- China
- Prior art keywords
- neutron
- airbag
- shield pipe
- air
- pipe
- 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.)
- Pending
Links
- 239000001257 hydrogen Substances 0.000 claims abstract description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 13
- 238000012216 screening Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 10
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 8
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 150000002431 hydrogen Chemical class 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21G—CONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES
- G21G4/00—Radioactive sources
- G21G4/02—Neutron sources
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Particle Accelerators (AREA)
Abstract
The invention proposes a kind of neutron beams to adjust device, including the neutron shield pipe being vertically arranged, the upper end of neutron shield pipe is neutron incidence end, the lower end of neutron shield pipe is neutron exit end, neutron exit end is connected with screening cover, screening cover center is equipped with perforation hole, and the diameter of perforation hole is less than the internal diameter of neutron shield pipe；It further include the airbag of circular ring shape, the internal diameter of airbag is less than the diameter of center perforation hole, airbag is set in neutron shield pipe and is coaxially disposed with neutron shield pipe, the lateral wall of airbag is fixedly connected with the inner sidewall of neutron shield pipe, airbag is equipped with multiple, multiple airbags are evenly distributed in neutron shield pipe up and down direction, and the internal diameter of airbag gradually becomes smaller from top to bottom；It further include air accumulator, escape pipe and multiple air pumps, airbag is equipped with air inlet and air outlet, and air inlet is connect by air pump with air accumulator, and air accumulator is provided with hydrogen, and gas outlet is connect by air pump with escape pipe, and each airbag is correspondingly arranged two air pumps；The section of the airbag is rectangle.
Description
Technical field
The present invention relates to neutron beam collimation engineering device technique fields, and in particular to a kind of neutron beam adjustment device.
Background technique
Compact accelerator for neutron production is because its is small in size, easy to control, is widely used in various industry using the advantages such as safe
In, such as drugs explosive detection, neutron well logging, coal analysis.In the application of accelerator for neutron production, it is often necessary to use
The neutron beam of collimation, therefore the design of neutrons collimation device is a critically important link.Neutrons collimation is to allow around collimating aperture
Fast neutron be absorbed by slowing down, make neutron only projected from collimating aperture, formed neutron beam.Since neutron is not charged, for reality
Existing neutrons collimation, need the selection of protective shielding material, collimator in terms of add to pay attention to.Meanwhile in giving
Electronic generator adds neutrons collimation device, also can be reduced the interference of surrounding objects, and have emphatically to the radiation protection of package unit
The meaning wanted, neutron will form the neutron beam of fixed diameter after collimator apparatus is emitted, and existing neutron howitzer designs
Afterwards, the diameter of neutron beam can not be changed, in this way in the neutron beam for needing different-diameter, is then cannot achieve.
Summary of the invention
In view of the above technical problems, the present invention proposes a kind of neutron beam adjustment device, especially for fast neutron beam
The adjustment of beam diameter size.
The technical scheme of the present invention is realized as follows:
A kind of neutron beam adjustment device, including the neutron shield pipe being vertically arranged, the upper end of the neutron shield pipe is
Neutron incidence end, the lower end of the neutron shield pipe are neutron exit end, and neutron exit end is connected with screening cover, in screening cover
The heart is equipped with perforation hole, and the diameter of perforation hole is less than the internal diameter of neutron shield pipe；
It further include the airbag of circular ring shape, the internal diameter of airbag is less than the diameter of center perforation hole, and airbag is set to neutron shield
It is coaxially disposed in pipe and with neutron shield pipe, the lateral wall of airbag is fixedly connected with the inner sidewall of neutron shield pipe, and airbag is equipped with
Multiple, multiple airbags are evenly distributed in neutron shield pipe up and down direction, and the internal diameter of airbag gradually becomes smaller from top to bottom；It further include storage
Gas tank, escape pipe and multiple air pumps, airbag are equipped with air inlet and air outlet, and air inlet is connect by air pump with air accumulator, store up
Gas tank is provided with hydrogen, and gas outlet is connect by air pump with escape pipe, and each airbag is correspondingly arranged two air pumps；The airbag
Section be rectangle.
The present invention is further arranged to, and solenoid valve is equipped between the air inlet and air pump.
The present invention is further arranged to, and solenoid valve is equipped between the gas outlet and air pump.
The present invention is further arranged to, and the neutron shield pipe and screening cover are by the material system that can shield neutron
At.
The present invention is further arranged to, and airbag convenient for the material that neutron passes through by being made.
The present invention is further arranged to, and the airbag can also replace the tube body of the hard circularized.
The present invention is further arranged to, and the tube body is equipped with vacuum-pumping tube.
Beneficial effects of the present invention:
Neutron beam provided by the invention adjusts device, and neutron beam is entered by the neutron incidence end of neutron shield pipe, then from
Neutron exit end projects, and if normal injection, is shielded the constraint of lid, the beam diameter of injection is exactly the straight of perforation hole on screening cover
Diameter, and to change the injection beam diameter of neutron, then hydrogen is filled with into airbag by air pump, forms an annular geocorona,
Fast neutron can be masked when passing through the geocorona by slowing down, by being arranged the different airbag of multiple internal diameters, it is corresponding can be obtained it is more
The neutron beam of a different-diameter, air pump are sent into the hydrogen in air accumulator in airbag, form slowing down and shield the slowing down of fast neutron
Shielded layer, such fast neutron can only just pass through from the centre of the airbag of annular, and the diameter of the neutron beam of formation is exactly the interior of airbag
Diameter.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of airbag of the present invention；
Fig. 3 is the sectional view of airbag of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
With reference to Fig. 1-3, the present invention will be described as follows:
A kind of neutron beam adjustment device, including the neutron shield pipe 1 being vertically arranged, the upper end of the neutron shield pipe 1
Lower end for neutron incidence end 2, the neutron shield pipe 1 is neutron exit end 3, and neutron exit end 3 is connected with screening cover 4,
4 center of screening cover is equipped with perforation hole 5, and the diameter of perforation hole 5 is less than the internal diameter of neutron shield pipe 1；
It further include the airbag 6 of circular ring shape, the internal diameter of airbag 6 is less than the diameter of center perforation hole 5, and airbag 6 is set to neutron
It is coaxially disposed in shielded-plate tube 1 and with neutron shield pipe 1, the lateral wall of airbag 6 is fixedly connected with the inner sidewall of neutron shield pipe 1.
Airbag 6 is equipped with multiple, and multiple airbags 6 are evenly distributed in 1 up and down direction of neutron shield pipe, from top to bottom airbag 6
Internal diameter gradually becomes smaller.The airbag of different inner diameters size is correspondingly formed the neutron beam of different beam diameters.
It further include air accumulator 7, escape pipe 8 and multiple air pumps 9, airbag 6 is equipped with air inlet 10 and gas outlet 11, air inlet
10 are connect by air pump 9 with air accumulator 7, and air accumulator 7 is provided with hydrogen, and gas outlet 11 is connect by air pump 9 with escape pipe 8, often
A airbag 6 is correspondingly arranged two air pumps 9, and an air pump is filled with the hydrogen in air accumulator in airbag, and an air pump is in airbag
Hydrogen detach.After airbag is full of hydrogen, hydrogen is formed in the interior thereof geocorona, and geocorona forms slowing down shielded layer, in fast
Son carries out slowing down and shielding action.
The section of the airbag 6 is rectangle, so that the geocorona to be formed is had certain thickness, has good slowing down screen
The effect of covering.
Wherein, solenoid valve 13 is equipped between the air inlet 10 and air pump 9.
Wherein, solenoid valve 13 is equipped between the gas outlet 11 and air pump 9.
The setting of solenoid valve can carry out the on-off of control hydrogen.
Wherein, the neutron shield pipe 1 and screening cover 4 are made of the material that can shield neutron.
Wherein, airbag 6 convenient for the material that neutron passes through by being made.
Wherein, the airbag 6 can also replace the tube body of the hard circularized.
Wherein, the tube body is equipped with vacuum-pumping tube 12, and vacuumizing air can form neutron beam in drain body
Interference.
Beneficial effects of the present invention:
Neutron beam provided by the invention adjusts device, and neutron beam is entered by the neutron incidence end 2 of neutron shield pipe 1, then
It is projected from neutron exit end 3, if normal injection, is shielded the constraint of lid 4, the beam diameter of injection is exactly to be emitted on screening cover 4
The diameter in hole 5, and to change the injection beam diameter of neutron, then hydrogen is filled with into airbag 6 by air pump 9, forms an annular
Geocorona, fast neutron can mask when passing through the geocorona by slowing down, pass through the different airbag 6 of the multiple internal diameters of setting, corresponding
The neutron beam that multiple and different diameters can be obtained, air pump 9 is sent into the hydrogen in air accumulator 7 in airbag 6, forms slowing down and shielding
The slowing down shielded layer of fast neutron, such fast neutron can only just pass through from the centre of the airbag 6 of annular, the diameter of the neutron beam of formation
It is exactly the internal diameter of airbag 6.
Above-described is only presently preferred embodiments of the present invention, is not intended to limit the invention, all of the invention
Within spirit and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of neutron beam adjusts device, it is characterised in that: including the neutron shield pipe being vertically arranged, the neutron shield pipe
Upper end be neutron incidence end, the lower end of the neutron shield pipe is neutron exit end, and neutron exit end is connected with screening cover,
Screening cover center is equipped with perforation hole, and the diameter of perforation hole is less than the internal diameter of neutron shield pipe；
It further include the airbag of circular ring shape, the internal diameter of airbag is less than the diameter of center perforation hole, and airbag is set in neutron shield pipe
And be coaxially disposed with neutron shield pipe, the lateral wall of airbag is fixedly connected with the inner sidewall of neutron shield pipe, airbag equipped with multiple,
Multiple airbags are evenly distributed in neutron shield pipe up and down direction, and the internal diameter of airbag gradually becomes smaller from top to bottom；Further include air accumulator,
Escape pipe and multiple air pumps, airbag are equipped with air inlet and air outlet, and air inlet is connect by air pump with air accumulator, in air accumulator
Equipped with hydrogen, gas outlet is connect by air pump with escape pipe, and each airbag is correspondingly arranged two air pumps；The section of the airbag
For rectangle.
2. a kind of neutron beam according to claim 1 adjusts device, it is characterised in that: between the air inlet and air pump
Equipped with solenoid valve.
3. a kind of neutron beam according to claim 1 adjusts device, it is characterised in that: between the gas outlet and air pump
Equipped with solenoid valve.
4. a kind of neutron beam according to claim 1 adjusts device, it is characterised in that: the neutron shield pipe and shielding
Lid is made of the material that can shield neutron.
5. a kind of neutron beam according to claim 1 adjusts device, it is characterised in that: airbag is by the material that passes through convenient for neutron
Material is made.
6. a kind of neutron beam according to claim 1 adjusts device, it is characterised in that: the airbag can also be substituted for
The tube body of the hard of annular.
7. a kind of neutron beam according to claim 6 adjusts device, it is characterised in that: the tube body is equipped with and vacuumizes
Pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910469982.1A CN110148483A (en) | 2019-05-31 | 2019-05-31 | A kind of neutron beam adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910469982.1A CN110148483A (en) | 2019-05-31 | 2019-05-31 | A kind of neutron beam adjustment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110148483A true CN110148483A (en) | 2019-08-20 |
Family
ID=67590157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910469982.1A Pending CN110148483A (en) | 2019-05-31 | 2019-05-31 | A kind of neutron beam adjustment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110148483A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866188A (en) * | 2021-08-25 | 2021-12-31 | 中国辐射防护研究院 | Device for measuring thermal neutron transmittance of shielding material |
| RU2773038C1 (en) * | 2021-11-24 | 2022-05-30 | Федеральное Государственное Унитарное Предприятие "Всероссийский Научно-Исследовательский Институт Автоматики Им.Н.Л.Духова" (Фгуп "Внииа") | Pulse neutron generator |
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| US4172760A (en) * | 1976-12-06 | 1979-10-30 | General Electric Company | Neutron transmission testing apparatus and method |
| WO1985005727A1 (en) * | 1984-06-01 | 1985-12-19 | Ltv Aerospace & Defense Company | Fast neutron moderator for accelerator in thermal neutron radiography system |
| US4582999A (en) * | 1981-02-23 | 1986-04-15 | Ltv Aerospace And Defense Company | Thermal neutron collimator |
| EP0193509A2 (en) * | 1985-02-28 | 1986-09-03 | Instrument Ab Scanditronix | Multi leaf collimator |
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| CN1134197A (en) * | 1993-10-29 | 1996-10-23 | 卡洛·鲁布比亚 | Energy amplifier for "clean" nuclear energy production driven by particle beam accelerator |
| WO1999020169A2 (en) * | 1997-10-23 | 1999-04-29 | Lockheed Martin Idaho Technologies Company | Dose masking feature for bnct radiotherapy planning |
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| WO2008011052A2 (en) * | 2006-07-18 | 2008-01-24 | Bossdev Inc | Remote detection of explosive substances |
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| CN105744714A (en) * | 2016-04-04 | 2016-07-06 | 东北师范大学 | Long-lifetime neutron tube with ceramic-head ion source |
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2019
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| EP0193509A2 (en) * | 1985-02-28 | 1986-09-03 | Instrument Ab Scanditronix | Multi leaf collimator |
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| CN1134197A (en) * | 1993-10-29 | 1996-10-23 | 卡洛·鲁布比亚 | Energy amplifier for "clean" nuclear energy production driven by particle beam accelerator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866188A (en) * | 2021-08-25 | 2021-12-31 | 中国辐射防护研究院 | Device for measuring thermal neutron transmittance of shielding material |
| CN113866188B (en) * | 2021-08-25 | 2024-04-12 | 中国辐射防护研究院 | Thermal neutron transmissivity measuring device for shielding material |
| RU2773038C1 (en) * | 2021-11-24 | 2022-05-30 | Федеральное Государственное Унитарное Предприятие "Всероссийский Научно-Исследовательский Институт Автоматики Им.Н.Л.Духова" (Фгуп "Внииа") | Pulse neutron generator |
| RU2776026C1 (en) * | 2021-11-26 | 2022-07-12 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт автоматики им. Н.Л. Духова" (ФГУП "ВНИИА") | Pulse neutron generator |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200201 Address after: 523808 room 310, building 1, No. 8, South Industrial Road, Songshanhu Park, Dongguan City, Guangdong Province Applicant after: Guangdong Taiwei accelerator Co., Ltd Address before: 035503 No. 6, Dongyi Lane, Dongye Town, Wutai County, Xinzhou City, Shanxi Province Applicant before: Yang Zhenmin |
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