CN108495442A - A kind of small-sized high current neutron source apparatus based on small linear accelerator - Google Patents
A kind of small-sized high current neutron source apparatus based on small linear accelerator Download PDFInfo
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- CN108495442A CN108495442A CN201810482212.6A CN201810482212A CN108495442A CN 108495442 A CN108495442 A CN 108495442A CN 201810482212 A CN201810482212 A CN 201810482212A CN 108495442 A CN108495442 A CN 108495442A
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- neutron
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H3/00—Production or acceleration of neutral particle beams, e.g. molecular or atomic beams
- H05H3/06—Generating neutron beams
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21G—CONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES
- G21G4/00—Radioactive sources
- G21G4/02—Neutron sources
Abstract
The present invention relates to a kind of small-sized high current neutron source apparatus based on small linear accelerator, it includes Electron cyclotron resonance ion source, Electron cyclotron resonance ion source is connected by connecting tube A with solenoid A, the other end of solenoid A is connected with solenoid B, the other end of solenoid B is connected by connecting tube B with radio frequency four polar field accelerator, radio frequency four polar field accelerator is connected with drift cast accelerator by beam transport pipeline A, it is provided with focus magnet on beam transport pipeline A, the other end of drift cast accelerator is connected by beam transport pipeline B with beam transport pipeline C, it is provided with three focus magnets on beam transport pipeline B, the other end of beam transport pipeline C is connected with thickening protection beam current tube A, the other end for thickening protection beam current tube A is connected with neutron target chamber A；Total, the present invention has the advantages that safe, economical and practical, easy promotion and popularization.
Description
Technical field
The invention belongs to physical fields, and in particular to a kind of small-sized high current neutron source dress based on small linear accelerator
It sets.
Background technology
1932, since checking in dimension gram discovery neutron, human use's neutron was opened to study the structure of matter and neutron
The research of other application, neutron in nuclear research, material and material application study, protein/drug development and magnetics and
More and more important in research in terms of superconduction, the demand of especially high-throughput neutron is more and more important, therefore high throughput is small-sized
Neutron source turn into basic research and new material research and development grand strategy facility, at present neutron source mainly by anti-
Answer the neutron that heap is drawn or the neutron that isotope generates, pile neutron source that cannot be widely used because safety limits, and
The neutron yield that isotope neutron source generates is low, causes its using effect bad；Therefore it provides a kind of safe, economic reality
With, the small-sized high current neutron source apparatus based on small linear accelerator that easily popularizes.
Invention content
The purpose of the invention is to overcome the deficiencies in the prior art, and provide one kind safe, economical and practical, Yi Pu
And the small-sized high current neutron source apparatus based on small linear accelerator promoted.
The object of the present invention is achieved like this：A kind of small-sized high current neutron source apparatus based on small linear accelerator,
It includes Electron cyclotron resonance ion source, and the Electron cyclotron resonance ion source is connected by connecting tube A with solenoid A, institute
The other end of the solenoid A stated is connected with solenoid B, and beam is provided between the solenoid A and solenoid B and examines element A, institute
The other end of the solenoid B stated is connected by connecting tube B with radio frequency four polar field accelerator, the solenoid B and radio frequency quadrupole
It is provided with beam between the accelerator of field and examines element B, the radio frequency four polar field accelerator is connected with drift by beam transport pipeline A
Cast accelerator, focus magnet is provided on the beam transport pipeline A, and the focus magnet accelerates with radio frequency four polar field
Be respectively arranged with that beam examines element C and beam examines element D between device and drift cast accelerator, the drift cast accelerator it is another
One end is connected by beam transport pipeline B with beam transport pipeline C, and three focusing are provided on the beam transport pipeline B
Magnet is respectively arranged with beam between three focus magnets and drift cast accelerator and beam transport pipeline C and examines element E
The other end that element F, the beam transport pipeline C are examined with beam is connected with thickening protection beam current tube A, thickening protection
The other end of beam current tube A is connected with neutron target chamber A.
Deflection magnet is provided on the beam transport pipeline C, on the beam transport pipeline C and deflection magnet
The corresponding position in deflection direction be connected with thickening protection beam current tube B, the other end of the thickening protection beam current tube B
It is connected with neutron target chamber B.
It is respectively connected with vacuum pump on the solenoid A, radio frequency four polar field accelerator and drift cast accelerator.
The neutron target chamber A and neutron target chamber B is by neutron target, slowing material, shielding material and collimator group
At.
The beam examines element A, beam examines element B, beam examines element C, beam examines element D, beam examines element E and beam is examined element F and wrapped
Beam position diagnostor, beam intensity diagnostor and beam emittance diagnostor are included.
The thickening protection beam current tube A and thickening protection beam current tube B is made of the material of neutron shield.
Beneficial effects of the present invention：The neutron source based on small-sized high current linear accelerator of the present invention, in state of not practicing shooting
Under, neutron is not generated completely, and practice shooting the neutron generated after slowing down and shielding, only remaining thermal neutron and the outer neutron of heat, and
Because cut-out line can be powered off to it at any time, therefore there is safety more higher than pile neutron source, meanwhile and isotope
Neutron source is compared, and the neutron source of small-sized high current linear accelerator of the invention has the advantages that neutron flux higher, moreover, this hair
Each component in bright all has than pile neutron source and isotope neutron source without radioactivity on O＆M
Safer facility is more easily popularized, is tighter economical and practical.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the small-sized high current neutron source apparatus based on small linear accelerator of the present invention.
In figure：1, Electron cyclotron resonance ion source 2, connecting tube A 3, solenoid A 4, solenoid B 5, connecting tube B
6, radio frequency four polar field accelerator 7, beam transport pipeline A 8, focus magnet 9, drift cast accelerator 10, line are defeated
Pipeline B 11 is transported, protection beam current tube B 12 is thickeied, neutron target chamber B 13, deflection magnet 14, thickeies protection beam current tube
A 15, neutron target chamber A 16, beam transport pipeline C 17, beam examine element F 18, three focus magnets 19, beam and examine element
E 20, vacuum pump 21, beam examine element D 22, beam examines element C 23, beam examines element B 24, beam examines element A.
Specific implementation mode
Following further describes the present invention with reference to the drawings.
Embodiment 1
As shown in Figure 1, a kind of small-sized high current neutron source apparatus based on small linear accelerator, it include electron cyclotron resonace from
Component 1, the Electron cyclotron resonance ion source 1 are connected by connecting tube A2 with solenoid A3, and the solenoid A3's is another
One end is connected with solenoid B4, and beam is provided between the solenoid A3 and solenoid B4 and examines element A24, the solenoid
The other end of B4 is connected by connecting tube B5 with radio frequency four polar field accelerator 6, and the solenoid B4 accelerates with radio frequency four polar field
It is provided with beam between device 6 and examines element B23, the radio frequency four polar field accelerator 6 is connected with drift by beam transport pipeline A7
Cast accelerator 9 is provided with focus magnet 8, the focus magnet 8 and radio frequency four polar field on the beam transport pipeline A7
It is respectively arranged with that beam examines element C22 and beam examines element D21, the drift cast between accelerator 6 and drift cast accelerator 9
The other end of accelerator 9 is connected by beam transport pipeline B10 with beam transport pipeline C16, the beam transport pipeline B10
On be provided with three focus magnets 18, three focus magnets 18 and drift cast accelerator 9 and beam transport pipeline C16
Between be respectively arranged with beam examine element E19 and beam examine element F17, the beam transport pipeline C16 the other end be connected with plus
Thickness protection beam current tube A14, the other end of the thickening protection beam current tube A14 are connected with neutron target chamber A15.
In the use of the present invention, electron cyclotron resonace（ECR）The high-current beam that ion source generates passes through solenoid A and solenoid
B is injected into radio frequency four polar field after focusing（RFQ）In accelerator, the line after rfq accelerator accelerates is by the poly- of focus magnet
It is injected into drift tube after burnt and matching（DTL）Type accelerator, line again pass by three focus magnets after being come out in DTL
Focus and matching after protect beam current tube to enter neutron target chamber by thickening, line enters after neutron target chamber in incident neutron target chamber
Neutron target generate high current neutron, while line stops in neutron target, and the high current neutron of generation has and line movement side
To opposite reflux neutron and advance neutron identical with the line direction of motion, wherein reflux neutron can be thickened protection line
Pipeline shields, and advance high current neutron is then moved on and spread, and the advance neutron on neutron demand direction can encounter slowing down
Material（Moderator）Afterwards its speed can by slowing down, after multiple slowing down, advance neutron all can by slowing down at thermal neutron, heat it is outer in
Son and cold neutrons can be shielded completely after encountering slowing material and shielding material without the advance neutron on neutron demand direction
It covers；The overall vacuum degree of small-sized high current neutron source in the present invention is 10-4-10-7Pa can be used as boron neutron absorption cancer
The neutron source for the treatment of uses, and can also be used as the neutron source of nondestructive inspection, and the neutron source that can also be used as neutron imaging uses,
It can be used with neutron source as material irradiation, have facility simpler, beam intensity is stronger, and neutron yield higher, cost is more
Low advantage；Electronics ecr ion source in the present invention is ion generation and injection device；Solenoid A and solenoid B are mainly used for
Transverse focusing is carried out to the line drawn from ion source；Beam is examined element and is detected for halved tie stream information；Rfq accelerator conduct
Preaccelerator carries out acceleration and shaping to the line after solenoid A and solenoid B matchings；Focus magnet be mainly used for from
The line that rfq accelerator comes out carries out pack and adjustment, and line is enable to match subsequent DTL accelerators；And DTL accelerator masters
The beam acceleration for being used to rfq accelerator come out is to appropriate energy, to generate more neutrons；Three focus magnets are mainly used
Pack, adjustment and matching are carried out in the line come out to DTL accelerators so that during line can be by designing in incident neutron target chamber
Sub- target；It is hollow pipeline to thicken protection beam current tube, and line is facilitated to pass through from centre, is mainly used in shielding reflux
Son；Neutron target chamber shields neutron mainly for generation of neutron and on the direction for do not need neutron；In the present invention
Beam examines element A, beam examines element B, beam examines element C, beam examines element D, beam examines element E and beam is examined element F and is mainly used for corresponding
Line is detected, and the line information detected can be used as feedback, and then adjusts solenoid A, solenoid B, focus magnet
With three focus magnets to obtain the line of more preferable quality；Total, the present invention has safe, economical and practical, easily universal push away
Wide advantage.
Embodiment 2
As shown in Figure 1, a kind of small-sized high current neutron source apparatus based on small linear accelerator, it include electron cyclotron resonace from
Component 1, the Electron cyclotron resonance ion source 1 are connected by connecting tube A2 with solenoid A3, and the solenoid A3's is another
One end is connected with solenoid B4, and beam is provided between the solenoid A3 and solenoid B4 and examines element A24, the solenoid
The other end of B4 is connected by connecting tube B5 with radio frequency four polar field accelerator 6, and the solenoid B4 accelerates with radio frequency four polar field
It is provided with beam between device 6 and examines element B23, the radio frequency four polar field accelerator 6 is connected with drift by beam transport pipeline A7
Cast accelerator 9 is provided with focus magnet 8, the focus magnet 8 and radio frequency four polar field on the beam transport pipeline A7
It is respectively arranged with that beam examines element C22 and beam examines element D21, the drift cast between accelerator 6 and drift cast accelerator 9
The other end of accelerator 9 is connected by beam transport pipeline B10 with beam transport pipeline C16, the beam transport pipeline B10
On be provided with three focus magnets 18, three focus magnets 18 and drift cast accelerator 9 and beam transport pipeline C16
Between be respectively arranged with beam examine element E19 and beam examine element F17, the beam transport pipeline C16 the other end be connected with plus
Thickness protection beam current tube A14, the other end of the thickening protection beam current tube A14 are connected with neutron target chamber A15；
In figure：1, Electron cyclotron resonance ion source 2, connecting tube A 3, solenoid A 4, solenoid B 5, connecting tube B 6,
Radio frequency four polar field accelerator 7, beam transport pipeline A 8, focus magnet 9, drift cast accelerator 10, beam transport
Pipeline B 11, it thickeies protection beam current tube B 12, neutron target chamber B 13, deflection magnet 14, thicken protection beam current tube A
15, neutron target chamber A 16, beam transport pipeline C 17, beam examine element F 18, three focus magnets 19, beam and examine element E
20, vacuum pump 21, beam examine element D 22, beam examines element C 23, beam examines element B 24, beam examines element A.
Be provided with deflection magnet 13 on the beam transport pipeline C16, on the beam transport pipeline C16 with partially
The corresponding position in deflection direction for turning magnet 13 is connected with thickening protection beam current tube B11, and line pipe is protected in the thickening
The other end of road B11 is connected with neutron target chamber B12；Solenoid A3, radio frequency four polar field accelerator 6 and the drift cast accelerates
Vacuum pump 20 is respectively connected on device 9；The neutron target chamber A15 and neutron target chamber B12 be by neutron target, slowing material,
Shielding material and collimator composition；The beam examines element A24, beam examines element B23, beam examines element C22, beam examines element D21, beam is examined
It includes beam position diagnostor, beam intensity diagnostor and beam emittance diagnostor that element E19 and beam, which examine element F17,；
The thickening protection beam current tube A14 and thickening protection beam current tube B11 is made of the material of neutron shield.
In the use of the present invention, electron cyclotron resonace（ECR）The high-current beam that ion source generates passes through solenoid A and solenoid
B is injected into radio frequency four polar field after focusing（RFQ）In accelerator, the line after rfq accelerator accelerates is by the poly- of focus magnet
It is injected into drift tube after burnt and matching（DTL）Type accelerator, line again pass by three focus magnets after being come out in DTL
Focus and matching after protect beam current tube to enter neutron target chamber by thickening, line enters after neutron target chamber in incident neutron target chamber
Neutron target generate high current neutron, while line stops in neutron target, and the high current neutron of generation has and line movement side
To opposite reflux neutron and advance neutron identical with the line direction of motion, wherein reflux neutron can be thickened protection line
Pipeline shields, and advance high current neutron is then moved on and spread, and the advance neutron on neutron demand direction can encounter slowing down
Material（Moderator）Afterwards its speed can by slowing down, after multiple slowing down, advance neutron all can by slowing down at thermal neutron, heat it is outer in
Son and cold neutrons can be shielded completely after encountering slowing material and shielding material without the advance neutron on neutron demand direction
It covers；The overall vacuum degree of small-sized high current neutron source in the present invention is 10-4-10-7Pa can be used as boron neutron absorption cancer
The neutron source for the treatment of uses, and can also be used as the neutron source of nondestructive inspection, and the neutron source that can also be used as neutron imaging uses,
It can be used with neutron source as material irradiation, have facility simpler, beam intensity is stronger, and neutron yield higher, cost is more
Low advantage；Electronics ecr ion source in the present invention is ion generation and injection device；Solenoid A and solenoid B are mainly used for
Transverse focusing is carried out to the line drawn from ion source；Beam is examined element and is detected for halved tie stream information；Rfq accelerator conduct
Preaccelerator carries out acceleration and shaping to the line after solenoid A and solenoid B matchings；Focus magnet be mainly used for from
The line that rfq accelerator comes out carries out pack and adjustment, and line is enable to match subsequent DTL accelerators；And DTL accelerator masters
The beam acceleration for being used to rfq accelerator come out is to appropriate energy, to generate more neutrons；Three focus magnets are mainly used
Pack, adjustment and matching are carried out in the line come out to DTL accelerators so that during line can be by designing in incident neutron target chamber
Sub- target；It is hollow pipeline to thicken protection beam current tube, and line is facilitated to pass through from centre, is mainly used in shielding reflux
Son；Neutron target chamber shields neutron mainly for generation of neutron and on the direction for do not need neutron；In the present invention
Beam examines element A, beam examines element B, beam examines element C, beam examines element D, beam examines element E and beam is examined element F and is mainly used for corresponding
Line is detected, and the line information detected can be used as feedback, and then adjusts solenoid A, solenoid B, focus magnet
With three focus magnets to obtain the line of more preferable quality；It is provided with deflection magnetic on the upper side of the beam transport pipeline C
Iron, thickening protection beam current tube B is connected on the downside of the beam transport pipeline C, and line pipe is protected in the thickening
The other end of road B is connected with neutron target chamber B, and deflection magnet is mainly used for deflected beam, and the application is equipped with after DTL accelerators
Deflection magnet, and there are also installed neutron target chambers on deflection direction so that line can be switched in both direction, so as to
It practices shooting in both direction, and then neutron can be generated in two directions；The neutron target chamber has neutron target, slowing down material
Material, shielding material and collimator composition, wherein neutron target can generate high current neutron by the bombardment of line, and slowing material is used
In slowing down fast neutron, shielding material is for shielding the neutron not needed on the direction of neutron, and collimator is for calibrating neutron extraction
Direction and position；The beam examines element A, beam examines element B, beam examines element C, beam examines element D, beam examines element E and beam examines element F,
Respectively between solenoid A and solenoid B, between solenoid B and rfq accelerator, between rfq accelerator and focus magnet, it is poly-
Between burnt magnet and DTL accelerators, between DTL accelerators and three focus magnets, between three focus magnets and deflection magnet
Beam position and Bunch current information measure；The thickening protection beam current tube is made of the material of neutron shield,
For protecting and shielding the reflux neutron practiced shooting and generated；Total, the present invention has safe, economical and practical, easy promotion and popularization
The advantages of.
Claims (6)
1. a kind of neutron source apparatus of use based on small-sized high current linear accelerator, it includes Electron cyclotron resonance ion source,
It is characterized in that：The Electron cyclotron resonance ion source is connected by connecting tube A with solenoid A, and the solenoid A's is another
End is connected with solenoid B, and beam is provided between the solenoid A and solenoid B and examines element A, the solenoid B's is another
End is connected by connecting tube B with radio frequency four polar field accelerator, is provided between the solenoid B and radio frequency four polar field accelerator
Beam examines element B, and the radio frequency four polar field accelerator is connected with drift cast accelerator by beam transport pipeline A, described
Focus magnet is provided on beam transport pipeline A, the focus magnet accelerates with radio frequency four polar field accelerator and drift cast
It is respectively arranged with that beam examines element C and beam examines element D between device, the other end of the drift cast accelerator passes through beam transport
Pipeline B is connected with beam transport pipeline C, and three focus magnets are provided on the beam transport pipeline B, and described three is poly-
It is respectively arranged with that beam examines element E and beam examines element F between burnt magnet and drift cast accelerator and beam transport pipeline C, it is described
The other end of beam transport pipeline C be connected with thickening protection beam current tube A, the thickening protection beam current tube A's is another
End is connected with neutron target chamber A.
2. a kind of small-sized high current neutron source apparatus based on small linear accelerator according to claim 1, feature exist
In：It is provided with deflection magnet on the beam transport pipeline C, it is inclined with deflection magnet on the beam transport pipeline C
Turn the corresponding position in direction and be connected with thickening protection beam current tube B, the other end of the thickening protection beam current tube B is in
Sub- target chamber B is connected.
3. a kind of small-sized high current neutron source apparatus based on small linear accelerator according to claim 1, feature exist
In：It is respectively connected with vacuum pump on the solenoid A, radio frequency four polar field accelerator and drift cast accelerator.
4. a kind of small-sized high current neutron source apparatus based on small linear accelerator according to claim 1, feature exist
In：The neutron target chamber A and neutron target chamber B is made of neutron target, slowing material, shielding material and collimator.
5. a kind of small-sized high current neutron source apparatus based on small linear accelerator according to claim 1, feature exist
In：The beam examines element A, beam examines element B, beam examines element C, beam examines element D, beam examines element E and beam to examine element F include beam
Flow position diagnostor, beam intensity diagnostor and beam emittance diagnostor.
6. a kind of small-sized high current neutron source apparatus based on small linear accelerator according to claim 1, feature exist
In：The thickening protection beam current tube A and thickening protection beam current tube B is made of the material of neutron shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810482212.6A CN108495442A (en) | 2018-05-18 | 2018-05-18 | A kind of small-sized high current neutron source apparatus based on small linear accelerator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810482212.6A CN108495442A (en) | 2018-05-18 | 2018-05-18 | A kind of small-sized high current neutron source apparatus based on small linear accelerator |
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| CN108495442A true CN108495442A (en) | 2018-09-04 |
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| CN201810482212.6A Pending CN108495442A (en) | 2018-05-18 | 2018-05-18 | A kind of small-sized high current neutron source apparatus based on small linear accelerator |
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Cited By (2)
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| CN110113860A (en) * | 2019-05-30 | 2019-08-09 | 兰州科近泰基新技术有限责任公司 | A kind of interdigital draft tube linac quadrupole electromagnet chamber and its manufacturing method |
| CN110113860B (en) * | 2019-05-30 | 2024-04-19 | 兰州科近泰基新技术有限责任公司 | Interdigital drift tube linear accelerator quadrupole magnet cavity and manufacturing method thereof |
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