CN105722297B - Mixing accelerates to focus on superconductor cavity - Google Patents
Mixing accelerates to focus on superconductor cavity Download PDFInfo
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- CN105722297B CN105722297B CN201610142074.8A CN201610142074A CN105722297B CN 105722297 B CN105722297 B CN 105722297B CN 201610142074 A CN201610142074 A CN 201610142074A CN 105722297 B CN105722297 B CN 105722297B
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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
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
- H05H7/14—Vacuum chambers
- H05H7/18—Cavities; Resonators
- H05H7/20—Cavities; Resonators with superconductive walls
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Abstract
Accelerate to focus on superconductor cavity the present invention relates to one kind mixing, superconducting cavity cylinder is provided with four parallel each other liquid helium cooling baths, and two relative liquid helium cooling baths are connected by multiple taper cone barrels；Annular accelerating tube is provided between two taper cone barrels, the center line of multiple accelerating tubes is with the center line of superconducting cavity cylinder on same center line；Vertical each other four focus on box and are located between accelerating tube, and are symmetrically fixed on liquid helium cooling bath；Taper cone barrel is connected with liquid helium cooling bath, and the liquid helium in taper cone barrel mutually circulates with the liquid helium in liquid helium cooling bath.It is an advantage of the invention that working at low temperature in superconducting state, resistance is small, and high-frequency loss is small；This structure combines beam acceleration function, beam focusing function in same high-frequency structure, compact conformation so that quality of beam is excellent；Accelerator length effectively is shortened, accelerator construction cost is reduced.
Description
Technical field
The present invention relates to a kind of ion accelerating cavity, belong to accelerator art field.
Background technology
Over nearly twenty or thirty year, with the raising of industrial technology level, superconduction high-frequency resonant cavity technology has obtained fast development.
Superconduction high-frequency resonant cavity is compared with normal temperature resonator, with accelerating gradient is high, high frequency power loss is small, longtime running cost is low
Advantage, has attracted the sight of whole world accelerator scholar, in the world the SNS in multiple large-scale accelerator installation such as U.S., FRIB, Europe
Spallation neutron target, the ADS accelerators of China in continent all have selected superconducting accelerator structure.Superconducting accelerator high-energy section superconductor cavity
Structure is relatively easy, technology development relative maturity；Superconducting accelerator low energy section superconductor cavity is complicated, ion beam space charge
Effect is the difficult point that superconducting accelerator is built substantially.In superconducting accelerator low energy region, charged particle is accelerated using low β superconductor cavities,
Charged particle by space charge effect and HF defocusing due to being acted on, and line transverse direction envelope is increasing, causes beam loss,
Need to carry out horizontal pack using outside focusing original paper to ensure the stable transmission of line, existing superconducting accelerator low energy
By many low β superconductor cavities and outside focus on that original paper is alternate to be constituted.
The subject matter of the accelerating structure is：
1. many low β superconductor cavities are focused on outside, original paper is alternate to be combined, and space length is long, and accelerator acceleration efficiency is low；
2. accelerator facility installs complicated, construction cost is high；
3. accelerator original paper is more, integration is not high, and stability is poor.
The content of the invention
It is an object of the invention to avoid the deficiencies in the prior art from providing a kind of mixing to accelerate to focus on superconductor cavity.It is low to solve
Can Gao Liuqiang ion beam current acceleration and focusing, it is to avoid prior art acceleration efficiency is low, accelerator facility installs complicated, builds
Cause that a high, accelerator original paper is more, integration is not high, the problems such as stability is poor.
To achieve the above object, the technical scheme taken of the present invention is：One kind mixing accelerates to focus on superconductor cavity, and it is main special
Point is that superconducting cavity cylinder is provided with four parallel each other liquid helium cooling baths, and two relative liquid helium cooling baths pass through multiple
Taper cone barrel is connected；Annular accelerating tube, center line and the superconducting cavity cylinder of multiple accelerating tubes are provided between two taper cone barrels
Center line is on same center line；Vertical each other four focus on box and are located between accelerating tube, and it is cold to be symmetrically fixed on liquid helium
But on groove；Taper cone barrel is connected with liquid helium cooling bath, and the liquid helium in taper cone barrel mutually circulates with the liquid helium in liquid helium cooling bath.
Described mixing accelerates to focus on superconductor cavity, and the cross section of described liquid helium cooling bath is rectangle, four liquid helium coolings
Groove is axially uniformly distributed along superconducting cavity cylinder.
Described mixing accelerates to focus on superconductor cavity, and the big one end connection liquid helium groove of described taper cone barrel diameter, diameter is small
One end connects accelerating tube.
Described mixing accelerates to focus on superconductor cavity, and described focusing box rectangular cross-section axially divides along superconducting cavity cylinder
Cloth, focuses on box and liquid helium cooling bath formation path, and the liquid helium focused in box mutually circulates with the liquid helium in liquid helium cooling bath；Four are gathered
Aperture between burnt box is 1cm~5cm, and it is 1cm~30cm to focus on box length.
Described mixing accelerates to focus on superconductor cavity, and the length of the accelerating tube is 0.5-20cm；Internal diameter is 1cm~6cm, phase
Accelerating gap distance between adjacent two accelerating tubes is 0.5-10cm.
Described mixing accelerates to focus on superconductor cavity, described to be respectively provided with a circular end plate at superconducting cavity cylinder two ends,
A line pipe and two cleaning pipes are respectively provided with two end plates.
Described mixing accelerates to focus on superconductor cavity, described superconducting cavity cylinder, liquid helium cooling bath, taper cone barrel, accelerating tube,
Focus on box, end plate, line pipe and clean the material of pipe for High-purity Niobium.
The beneficial effects of the invention are as follows in high intensity proton cyclotron low energy region, due to original paper and focusing original paper will be accelerated integrated
In a superconducting cavity, structure is compacter, and space length is short, and accelerator acceleration effect is high；As a result of superconduction material
Material is made, and high-frequency loss is small at low temperature, and longtime running cost is low；Accelerator original paper is few, and integrated level is high, install simple, operation
More stablize.The present invention is mainly used for intense pulsed ion beam stream and accelerates low energy region.
It is an advantage of the invention that working at low temperature in superconducting state, resistance is small, and high-frequency loss is small；This structure adds line
Fast function, beam focusing function is combined in same high-frequency structure, compact conformation so that quality of beam is excellent；Effective contracting
Short accelerator length, reduces accelerator construction cost.It is low that the present invention is mainly used for proton precessional magnetometer, heavy ion avcceleration
Can section proton beam, the acceleration of HIB.
Brief description of the drawings：
Fig. 1 accelerates to focus on superconductor cavity front view for mixing；
Fig. 2 accelerates to focus on superconductor cavity B-B sectional views for mixing；
Fig. 3 accelerates to focus on superconductor cavity C-C sectional views for mixing；
Fig. 4 accelerates to focus on superconductor cavity A-A sectional views for mixing.
In figure：1. superconducting cavity cylinder；2. end plate；3. cleaning pipe；4. line pipe；5. liquid helium cooling bath；6. power is coupled
Mouthful；7. cooling bath 5 is connected with focusing on the inside of box 9；8. cooling bath 5 is connected with the inside of taper cone barrel 11；9. focus on box；10. accelerating tube；
11. taper cone barrel.
Embodiment
The principle and feature to the present invention are described with reference to embodiments, and the given examples are served only to explain the present invention,
It is not intended to limit the scope of the present invention.Present disclosure is described in detail below.
Embodiment 1：One kind mixing accelerates to focus on superconductor cavity, and it is mainly characterized by superconducting cavity cylinder 1 provided with each other
Four parallel liquid helium cooling baths 5, two relative liquid helium cooling baths 5 are connected by multiple taper cone barrels 11；Two taper cone barrels 11
Between be provided with annular accelerating tube 10, multiple accelerating tubes 10 and superconducting cavity cylinder 1 are on a center line；Vertical each other four
Individual focusing box 9 is located between accelerating tube 10, and is symmetrically fixed on liquid helium cooling bath 5.Taper cone barrel 11 is formed with liquid helium cooling bath 5
Liquid helium in path, taper cone barrel 11 and the liquid helium free flow in liquid helium cooling bath 5.
The cross section of described liquid helium cooling bath 5 is rectangle, and four liquid helium cooling baths 5 are axially equal along superconducting cavity cylinder 1
Even distribution.
The described connection liquid helium of taper cone barrel 11 5 end diameters of groove are big, and the connection end diameter of accelerating tube 10 is small.
The described rectangular cross-section of focusing box 9, is axially distributed along superconducting cavity cylinder 1, focuses on box 9 and liquid helium cooling bath 5
Path is formed, the liquid helium in box 9 and the liquid helium free flow in liquid helium cooling bath 5 is focused on；Four apertures focused between box are
1cm, it is 1cm to focus on the length of box 9.
The length of the accelerating tube 10 is 0.5cm；Internal diameter is 1cm, the accelerating gap between two neighboring accelerating tube 10 away from
From for 0.5cm.
Described being respectively provided with 1 two ends of superconducting cavity cylinder in a circular end plate 2, two end plates 2 is respectively provided with a line
Pipe 4 and two cleaning pipes 3.
Described superconducting cavity cylinder 1, liquid helium cooling bath 5, taper cone barrel 11, accelerating tube 10, focus on box 9, end plate 2, line
The material of pipe 4 and cleaning pipe 3 is High-purity Niobium.
Embodiment 2：One kind mixing accelerates to focus on superconductor cavity, and it is mainly characterized by superconducting cavity cylinder 1 provided with each other
Four parallel liquid helium cooling baths 5, two relative liquid helium cooling baths 5 are connected by multiple taper cone barrels 11；Two taper cone barrels 11
Between be provided with annular accelerating tube 10, multiple accelerating tubes 10 and superconducting cavity cylinder 1 are on a center line；Vertical each other four
Individual focusing box 9 is located between accelerating tube 10, and is symmetrically fixed on liquid helium cooling bath 5.Taper cone barrel 11 is formed with liquid helium cooling bath 5
Liquid helium in path, taper cone barrel 11 and the liquid helium free flow in liquid helium cooling bath 5.
The cross section of described liquid helium cooling bath 5 is rectangle, and four liquid helium cooling baths 5 are axially equal along superconducting cavity cylinder 1
Even distribution.
The described connection liquid helium of taper cone barrel 11 5 end diameters of groove are big, and the connection end diameter of accelerating tube 10 is small.
The described rectangular cross-section of focusing box 9, is axially distributed along superconducting cavity cylinder 1, focuses on box 9 and liquid helium cooling bath 5
Path is formed, the liquid helium in box 9 and the liquid helium free flow in liquid helium cooling bath 5 is focused on；Four apertures focused between box are
5cm, it is 30cm to focus on the length of box 9.
The length of the accelerating tube 10 is 20cm；Internal diameter is 6cm, the accelerating gap distance between two neighboring accelerating tube 10
For 10cm.
Described being respectively provided with 1 two ends of superconducting cavity cylinder in a circular end plate 2, two end plates 2 is respectively provided with a line
Pipe 4 and two cleaning pipes 3.
Described superconducting cavity cylinder 1, liquid helium cooling bath 5, taper cone barrel 11, accelerating tube 10, focus on box 9, end plate 2, line
The material of pipe 4 and cleaning pipe 3 is High-purity Niobium.
Embodiment 3：One kind mixing accelerates to focus on superconductor cavity, and it is mainly characterized by superconducting cavity cylinder 1 provided with each other
Four parallel liquid helium cooling baths 5, two relative liquid helium cooling baths 5 are connected by multiple taper cone barrels 11；Two taper cone barrels 11
Between be provided with annular accelerating tube 10, multiple accelerating tubes 10 and superconducting cavity cylinder 1 are on a center line；Vertical each other four
Individual focusing box 9 is located between accelerating tube 10, and is symmetrically fixed on liquid helium cooling bath 5.Taper cone barrel 11 is formed with liquid helium cooling bath 5
Liquid helium in path, taper cone barrel 11 and the liquid helium free flow in liquid helium cooling bath 5.
The cross section of described liquid helium cooling bath 5 is rectangle, and four liquid helium cooling baths 5 are axially equal along superconducting cavity cylinder 1
Even distribution.
The described connection liquid helium of taper cone barrel 11 5 end diameters of groove are big, and the connection end diameter of accelerating tube 10 is small.
The described rectangular cross-section of focusing box 9, is axially distributed along superconducting cavity cylinder 1, focuses on box 9 and liquid helium cooling bath 5
Path is formed, the liquid helium in box 9 and the liquid helium free flow in liquid helium cooling bath 5 is focused on；Four apertures focused between box are
3cm, it is 20cm to focus on the length of box 9.
The length of the accelerating tube 10 is 10cm；Internal diameter is 3cm, the accelerating gap distance between two neighboring accelerating tube 10
For 5cm.
Described being respectively provided with 1 two ends of superconducting cavity cylinder in a circular end plate 2, two end plates 2 is respectively provided with a line
Pipe 4 and two cleaning pipes 3.
Described superconducting cavity cylinder 1, liquid helium cooling bath 5, taper cone barrel 11, accelerating tube 10, focus on box 9, end plate 2, line
The material of pipe 4 and cleaning pipe 3 is High-purity Niobium.
Test example：See Fig. 1, Fig. 2, Fig. 3, Fig. 4, one kind mixing accelerates to focus on superconductor cavity, include a chamber cylinder and two
End plate, described chamber cylinder is cylindrical tube 1, and the both sides of cylinder are respectively equipped with circular end plate 2；Cylinder is cold provided with four liquid heliums
But groove 5, four liquid helium cooling baths are parallel to each other to be axially uniformly distributed along cylinder, two liquefaction cooling baths of vertical direction in Fig. 2
Connected by 5 support bars, two liquefaction cooling baths of horizontal direction are connected by 7 support bars, and support bar is by two circular cones
The accelerating tube 10 of the connection of cylinder 11 is constituted；Four mutually perpendicular compositions of box 9 one that focus on are mounted between accelerating tube 10, and are fixed on
On cooling bath 5；Cooling bath 5 connects 7 with focusing on the inside of box 9, and cooling bath 5 connects 8 with the inside of taper cone barrel 11；The one of lower section in Fig. 3
Individual cooling bath is provided with a power coupling aperture 6；A line pipe 4 and two cleaning pipes 3, beam are respectively provided with the end plate 2 of both sides
Flow tube 4 is located on chamber 1 axis of cylinder, and above-mentioned all parts are made using High-purity Niobium material.
1 a diameter of 0.8m of the chamber cylinder, length is 1.38m, a diameter of 0.8m of both sides end plate 2.
The length of accelerating tube 10 is 4cm, and aperture is 4cm, and the accelerating gap between two neighboring accelerating tube is 2cm, even
The support bar for connecing two neighboring accelerating tube is mutually perpendicular to.
Aperture between the focusing box is 4cm, and it is 10cm to focus on box length, and the gap focused between box and accelerating tube is
2cm。
The aperture of power coupling aperture 6 is 5cm, and cleaning pipe 3 aperture is 3cm, and pipe thickness is 0.3cm.
Above-described embodiment is preferably embodiment, but embodiments of the present invention are not by above-described embodiment of the invention
Limitation, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (2)
1. one kind mixing accelerates to focus on superconductor cavity, it is characterised in that superconducting cavity cylinder is provided with four parallel each other liquid heliums
Cooling bath, two relative liquid helium cooling baths are connected by multiple taper cone barrels；Annular accelerating tube is provided between two taper cone barrels,
The center line of center line and the superconducting cavity cylinder of multiple accelerating tubes is on same center line；Four vertical each other focusing boxes
Between accelerating tube, and symmetrically it is fixed on liquid helium cooling bath；Taper cone barrel is connected with liquid helium cooling bath, the liquid helium in taper cone barrel
Mutually circulated with the liquid helium in liquid helium cooling bath；Box rectangular cross-section is focused on, is axially distributed along superconducting cavity cylinder, focuses on box and liquid
Helium cooling bath formation path, the liquid helium focused in box mutually circulates with the liquid helium in liquid helium cooling bath；Between the four focusing box
Aperture be 1cm~5cm, it is 1cm~30cm to focus on box length；The length of the accelerating tube is 0.5-20cm；Internal diameter be 1cm~
Accelerating gap distance between 6cm, two neighboring accelerating tube is 0.5-10cm；A circle is respectively provided with superconducting cavity cylinder two ends
A line pipe and two cleaning pipes are respectively provided with shape end plate, two end plates；Described superconducting cavity cylinder, liquid helium cooling bath, circle
Cone cylinder, accelerating tube, focus on box, end plate, line pipe and clean pipe material be High-purity Niobium；The cross section of described liquid helium cooling bath
For rectangle, four liquid helium cooling baths are axially uniformly distributed along superconducting cavity cylinder.
2. mixing as claimed in claim 1 accelerates to focus on superconductor cavity, it is characterised in that the big one end of described taper cone barrel diameter
Connect liquid helium cooling bath, the small one end connection accelerating tube of diameter.
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| CN201610142074.8A CN105722297B (en) | 2016-03-14 | 2016-03-14 | Mixing accelerates to focus on superconductor cavity |
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| CN201610142074.8A CN105722297B (en) | 2016-03-14 | 2016-03-14 | Mixing accelerates to focus on superconductor cavity |
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| CN111741588A (en) * | 2020-07-02 | 2020-10-02 | 广东太微加速器有限公司 | High-frequency resonance cavity with novel cooling structure |
| CN113593768B (en) * | 2021-08-05 | 2022-11-01 | 中国科学院近代物理研究所 | Superconducting cavity solid conduction cooling structure |
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| JP2000012298A (en) * | 1998-06-22 | 2000-01-14 | Mitsubishi Heavy Ind Ltd | Superconductive rfq accelerator and its manufacture |
| ITMI20022608A1 (en) * | 2002-12-09 | 2004-06-10 | Fond Di Adroterapia Oncologic A Tera | LINAC WITH DRAWING TUBES FOR THE ACCELERATION OF A BAND OF IONS. |
| JP5911414B2 (en) * | 2012-06-12 | 2016-04-27 | 三菱電機株式会社 | Drift tube linear accelerator |
| JP5871846B2 (en) * | 2013-03-13 | 2016-03-01 | 三菱電機株式会社 | Drift tube linear accelerator and particle beam therapy system |
| CN103354696B (en) * | 2013-06-27 | 2016-01-13 | 中国科学院近代物理研究所 | High-frequency electrical focuses on high gradient ion accelerator |
| CN103906339A (en) * | 2013-09-28 | 2014-07-02 | 中国科学院近代物理研究所 | Ion accelerator injection device and using method |
| JP6049601B2 (en) * | 2013-12-05 | 2016-12-21 | 三菱重工メカトロシステムズ株式会社 | Superconducting acceleration cavity and method of electropolishing superconducting acceleration cavity |
| CN103716978A (en) * | 2014-01-14 | 2014-04-09 | 中国科学院近代物理研究所 | Half-wavelength superconductive accelerating cavity |
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