CN204968213U - Wing section of buckling radio frequency quadrupole accelerator - Google Patents
Wing section of buckling radio frequency quadrupole accelerator Download PDFInfo
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- CN204968213U CN204968213U CN201520573157.3U CN201520573157U CN204968213U CN 204968213 U CN204968213 U CN 204968213U CN 201520573157 U CN201520573157 U CN 201520573157U CN 204968213 U CN204968213 U CN 204968213U
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- cavity
- wings
- radio frequency
- accelerator
- pole
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Abstract
The utility model belongs to the technical field of ion accelerator is mechanism's technique with higher speed and specifically relates to a wing section of buckling radio frequency quadrupole accelerator is related to. Its characteristics are including the cavity, the cavity in be provided with four wings, the cavity both ends are provided with the end plate respectively, every end plate center is provided with a line hole, the central line in two line holes and cavity the central axis are on same straight line, the tuner that still is provided with the pi mode stabilizer bar on the cavity and is used for adjusting frequency. It is through buckling to the wing in cartridge part, and the size of having reduced the cavity cross section greatly under the unchangeable condition of the horizontal total length of the wing is applicable to the low frequency line very much, simultaneously, owing to possess traditional four wing section radio frequency quadrupoles simple, effectual advantage of cooling system of structure with higher speed, consequently especially adapted continuous wave operating condition. The utility model discloses in the processing degree of difficulty that reduces radio frequency quadrupole accelerator, reduce the engineering cost and all have obvious advantage in the aspect of with, improve equipment reliability of operation and stability etc.
Description
Technical field
The utility model relates to ion accelerator acceleration mechanism technical field, especially relates to a kind of bending aerofoil profile radio frequency four pole accelerator.
Background technology
The fast development of radio frequency four pole (RFQ) accelerator to world's accelerator that 20 century 70s occur serves huge impetus.Rfq accelerator integrates beam acceleration, focusing and pack, is mainly applicable to the acceleration of low energy line, the general injector being used as middle high energy acclerator.The accelerating structure mainly four rod-type structures of the low frequency rfq accelerator that current people commonly use.When working in continuous wave (CW) state, require that rfq accelerator must possess rational cooling system, effectively to process the amount of heat that running hours cavity produces.But, the cooling system of four rod-type rfq accelerators is quite complicated, it is generally made up of cooling of electrode pipeline, supporting bracket cooling pipe, cushion block cooling pipe and base plate cooling pipe, and the cooling system of these complexity brings very large difficulty to cavity Machine Design and processing.The beginning of this century, U.S. A Gang laboratory (ANL) proposes one and to window four aerofoil profile RFQ accelerating structures, and this structure is also suitable for low frequency ranges, but its shortcoming to be cooling system equally complicated.
Theoretically, tradition four aerofoil profile rfq accelerator accelerating structures also can be used for low frequency field, and this accelerating structure has simple, the effective advantage of cooling system, but its cross sectional dimensions is often very large when being applied to low frequency field, four aerofoil profile rfq accelerators of university (MSU) are found for Michigan State Usa, its operating frequency is 80.5MHz, cavity internal diameter reaches 940mm, this proposes a very large difficult problem to the processing of cavity, such as need large-scale machining tool and soldering furnace, the most important thing is that the precision of processing not easily ensures.
Summary of the invention
The purpose of this utility model is to avoid the defect of prior art and provides a kind of bending aerofoil profile radio frequency four pole accelerator, efficiently solves prior art Problems existing.
For achieving the above object, the technical scheme that the utility model is taked is: described one bending aerofoil profile radio frequency four pole accelerator, be characterized in comprising cavity, four wings are provided with in described cavity, cavity two ends are respectively arranged with end plate, each end plate central is provided with a line hole, and the center line in two line holes and chamber central axis are on the same line; Cavity is also provided with π mould stabiliser bar and the tuner for adjusting frequency.
Described cavity is screwed with each end plate and is connected, and is provided with high frequency sealing ring and vaccum seal ring between cavity and each end plate.
Four described wings are bending shape, and wing cartridge part and root are vertical relation, and four wings are arranged in cavity and by cavity by centrosymmetric mode and are divided into four parts equably.
Two described end plates and the end of four wings are provided with gap, are provided with gap between the cartridge of four wings, and the cartridge tip of four wings is arc structure.
Described cavity and four wings adopt vacuum welding to be connected, described cavity and four wings are provided with cooling water pipeline, cooling water will take away the heat of cavity running hours generation, and quantity, the size and location layout of cooling water pipeline are determined by calculation of thermodynamics.
Described cavity is square or octagon structure, and cavity is high vacuum cavity, and its vacuum degree is generally 10
-4-10
-7pa.
The length of described cavity and four wings is calculated by beam dynamics to be determined, gap length between two end plates and the end of four wings is determined by the requirement of cavity internal electric field evenness, gap between the cartridge of four wings is calculated by beam dynamics to be determined, the radius of curvature of the circular arc of the cartridge tip of four bending wings is calculated by beam dynamics to be determined, the cross sectional dimensions of cavity is determined by cavity frequency.
The beneficial effects of the utility model are: described one bending aerofoil profile radio frequency four pole accelerator, it is by bending the wing in cartridge part, compared to four traditional aerofoil profile radio frequency four pole accelerating structures, the utility model reduces the size of cavity cross section greatly when the horizontal total length of the wing is constant, be highly suitable for low frequency line; Meanwhile, due to simple, the effective advantage of the cooling system possessing traditional four aerofoil profile radio frequency four pole accelerating structures, therefore very continuous wave operating state is applicable to.The utility model reducing the difficulty of processing of radio frequency four pole accelerator, reduce engineering cost, improve in equipment reliability of operation and stability etc. and all have a clear superiority in.
Accompanying drawing explanation
Fig. 1 is axle geodesic structure principle schematic of the present utility model;
Fig. 2 is the HIAFRFQ temperature profile adopting the utility model structure;
Shown in figure: 1. cavity, the 2. wing, 3. arc structure, 4. tuner, 5. π mould stabiliser bar, 6. cooling water pipeline, 7. end plate, 8. line hole, 9. high frequency sealing ring, 10. vaccum seal ring.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, described one bending aerofoil profile radio frequency four pole accelerator, be characterized in comprising cavity 1, four wings 2 are provided with in described cavity 1, cavity 1 two ends are respectively arranged with end plate 7, each end plate central is provided with the center line in 8, two line holes, a line hole and cavity 1 central axis on the same line; Cavity 1 is also provided with π mould stabiliser bar 5 and the tuner 4 for adjusting frequency.
Further, described cavity 1 is screwed with each end plate 7 and is connected, and is provided with high frequency sealing ring 9 and vaccum seal ring 10 between cavity 1 and each end plate.
Further, described four wings 2 are bending shape, and the wing 2 cartridge part and root are vertical relation, and four wings 2 to be arranged in cavity 1 by centrosymmetric mode and cavity 1 is divided into four parts equably.
Further, described two end plates 7 and the end of four wings 2 are provided with gap, are provided with gap between the cartridge of four wings 2, and the cartridge tip of four wings 2 is arc structure 3.
Further, described cavity 1 adopts vacuum welding to be connected with four wings 2, described cavity 1 and four wings 2 are provided with cooling water pipeline 6, and cooling water will take away the heat of cavity running hours generation, and quantity, the size and location layout of cooling water pipeline are determined by calculation of thermodynamics.
Further, described cavity 1 is square or octagon structure, and cavity 1 is high vacuum cavity, and its vacuum degree is generally 10
-4-10
-7pa.
The length of described cavity and four wings is calculated by beam dynamics to be determined, gap length between two end plates and the end of four wings is determined by the requirement of cavity internal electric field evenness, gap between the cartridge of four wings is calculated by beam dynamics to be determined, the radius of curvature of the circular arc of the cartridge tip of four bending wings is calculated by beam dynamics to be determined, the cross sectional dimensions of cavity is determined by cavity frequency.
As shown in Figure 2, adopt bending aerofoil profile radio frequency four pole accelerator accelerating structure HIAF (
high
intensityHeavy-ion
accelerator
facility) rfq accelerator.It is 81.25MHz that HIAFRFQ accelerator is used for being the operating frequency that the ion beam (all ions from proton to uranium 238) of 0.014MeV/u accelerates to 0.5MeV/u.HIAFRFQ accelerator by energy, belong to low frequency ranges, this accelerator is continuous operation mode.Adopt the temperature profile of the cavity of the HIAFRFQ accelerator of bending aerofoil profile radio frequency four pole accelerator accelerating structure, the diameter of water cooled pipeline is 12mm in this computation, and the temperature of cooling water is 20 DEG C, and the flow velocity of water is 2.29 metre per second (m/s)s.As can be seen from the figure, the maximum temperature of the cavity of the HIAFRFQ of bending aerofoil profile accelerating structure is only 24.33 DEG C, meets equipment reliability of operation and stability requirement completely.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (6)
1. a bending aerofoil profile radio frequency four pole accelerator, it is characterized in that comprising cavity, be provided with four wings in described cavity, cavity two ends are respectively arranged with end plate, each end plate central is provided with a line hole, and the center line in two line holes and chamber central axis are on the same line; Cavity is also provided with π mould stabiliser bar and the tuner for adjusting frequency.
2. a kind of bending aerofoil profile radio frequency four pole as claimed in claim 1 accelerator, is characterized in that: described cavity is screwed with each end plate and is connected, and is provided with high frequency sealing ring and vaccum seal ring between cavity and each end plate.
3. a kind of bending aerofoil profile radio frequency four pole as claimed in claim 1 accelerator, it is characterized in that: four described wings are bending shape, wing cartridge part and root are vertical relation, and four wings are arranged in cavity and by cavity by centrosymmetric mode and are divided into four parts equably.
4. a kind of bending aerofoil profile radio frequency four pole as claimed in claim 1 accelerator, is characterized in that: two described end plates and the end of four wings are provided with gap, are provided with gap between the cartridge of four wings, and the cartridge tip of four wings is arc structure.
5. a kind of bending aerofoil profile radio frequency four pole as claimed in claim 1 accelerator, it is characterized in that: described cavity and four wings adopt vacuum welding to be connected, described cavity and four wings are provided with cooling water pipeline, cooling water will take away the heat of cavity running hours generation, and quantity, the size and location layout of cooling water pipeline are determined by calculation of thermodynamics.
6. a kind of bending aerofoil profile radio frequency four pole as claimed in claim 1 accelerator, is characterized in that: described cavity is square or octagon structure, and cavity is high vacuum cavity, and its vacuum degree is generally 10
-4-10
-7pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520573157.3U CN204968213U (en) | 2015-07-31 | 2015-07-31 | Wing section of buckling radio frequency quadrupole accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520573157.3U CN204968213U (en) | 2015-07-31 | 2015-07-31 | Wing section of buckling radio frequency quadrupole accelerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204968213U true CN204968213U (en) | 2016-01-13 |
Family
ID=55063245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520573157.3U Withdrawn - After Issue CN204968213U (en) | 2015-07-31 | 2015-07-31 | Wing section of buckling radio frequency quadrupole accelerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204968213U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105050309A (en) * | 2015-07-31 | 2015-11-11 | 中国科学院近代物理研究所 | Bent wing-type radio-frequency quadrupole accelerator |
| CN106944697A (en) * | 2017-05-22 | 2017-07-14 | 上海克林技术开发有限公司 | A kind of welding method of four wings octagon radio frequency four polar field accelerator cavity |
-
2015
- 2015-07-31 CN CN201520573157.3U patent/CN204968213U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105050309A (en) * | 2015-07-31 | 2015-11-11 | 中国科学院近代物理研究所 | Bent wing-type radio-frequency quadrupole accelerator |
| CN106944697A (en) * | 2017-05-22 | 2017-07-14 | 上海克林技术开发有限公司 | A kind of welding method of four wings octagon radio frequency four polar field accelerator cavity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160113 Effective date of abandoning: 20171219 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160113 Effective date of abandoning: 20171219 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |