CN219678756U - Liquid cooling high-gradient broadband synchrotron high-frequency system - Google Patents
Liquid cooling high-gradient broadband synchrotron high-frequency system Download PDFInfo
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Abstract
The utility model relates to a liquid cooling high gradient broadband synchrotron high-frequency system, which comprises a liquid cooling magnetic alloy cavity and an electron tube power source system, wherein the liquid cooling magnetic alloy cavity is arranged on the electron tube power source system; the liquid-cooled magnetic alloy cavity comprises a cavity body, a magnetic alloy ring, a bus parallel feeder power transmission device and a cavity oil cooling system; the bus parallel feeder power transmission device is connected with the first Tank cavity, the third Tank cavity and the fifth Tank cavity in parallel and then connected to the first valve output end of the valve power source system, and the bus parallel feeder power transmission device is connected with the second Tank cavity, the fourth Tank cavity and the sixth Tank cavity in parallel and then connected to the second valve output end of the valve power source system; the cavity oil cooling system adopts a direct oil cooling structure to cool the cavity body.
Description
Technical Field
The utility model relates to a liquid cooling high-gradient broadband synchronous accelerator high-frequency system, and relates to the technical field of accelerators.
Background
The new generation of strong current heavy ion synchrotron has the characteristics of synchronous fast circulation, strong current high energy and the like, and the synchrotron requires the extracted beam to have the characteristics of high current intensity, high energy and high quality. Based on the above requirements, the new generation of heavy-current heavy-ion synchrotron provides high technical index requirements of low frequency, high accelerating voltage gradient, wide working frequency band, rapid voltage rise and the like for a high-frequency system.
A broadband power source is one of the core devices of a high frequency system, and is mainly used for providing all power energy for the high frequency system. The wide-band power sources of synchrotrons are mainly of two types: a kind of all solid-state type power source, its main characteristic is to adopt the multistage synthesis of the miniwatt module, low-voltage power supply and antireflection strong, etc., but because of the solid-state module volume limit, the large-power solid-state power source needs the quantity of the cabinet, the volume is large, and its power output end can only connect the characteristic impedance to be 50 ohm load; the other is an electron tube type power source, which is designed by taking an electron quadrupole tube as a core and matching with each stage of power supply and a cooling device, and is mainly characterized in that the output power of a single power source is large (tens of millions to megawatts), the load impedance matching range is large, the capacity of the load impedance matching range is strong, and the like, and meanwhile, a filter cannot be designed due to a broadband working mode, so that the load voltage waveform and the harmonic suppression degree are poor, and high-quality beam current cannot be obtained. In addition, the power source power coupling mainly comprises two modes of magnetic coupling and capacitive coupling, the two modes of coupling generally require a matching load with a coupling port of 50 ohms, the output impedance of the magnetic alloy cavity is far higher than 50 ohms due to the requirement of a high voltage gradient, the cavity has a wide working frequency bandwidth, and the fluctuation range of the output impedance value is large, so that the matching of the power source and the cavity is a difficult problem.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model aims to provide a liquid cooling high gradient broadband synchrotron high-frequency system which has the characteristics of low frequency, high acceleration gradient and large bandwidth.
In order to achieve the purpose of the aspects, the technical scheme provided by the utility model is as follows: a liquid cooling high gradient broadband synchrotron high frequency system comprises a liquid cooling magnetic alloy cavity and an electron tube power source system; the liquid-cooled magnetic alloy cavity comprises a cavity body, magnetic alloy rings, a bus parallel feeder power transmission device and a cavity oil cooling system, wherein a plurality of Tank cavities are arranged in the cavity body at intervals, each Tank cavity comprises a plurality of magnetic alloy rings, the Tank cavities are defined as first to sixth Tank cavities along the front and back of the cavity, the bus parallel feeder power transmission device is connected with the first Tank cavity, the third Tank cavity and the fifth Tank cavity in parallel and then connected to the first electronic tube output end of the electronic tube power source system, and the bus parallel feeder power transmission device is connected with the second Tank cavity, the fourth Tank cavity and the sixth Tank cavity in parallel and then connected to the second electronic tube output end of the electronic tube power source system; the cavity oil cooling system adopts a direct oil cooling structure to cool the cavity body.
Further, the cavity oil cooling system comprises an oil cooling machine and an oil cooling pipeline, the top of the cavity body corresponding to each group of Tank cavities is provided with a cavity oil outlet box, the bottom of the cavity body of each group of Tank cavities is provided with a cavity oil inlet box, each cavity oil inlet box is provided with an oil drain valve, each cavity oil outlet box is provided with an exhaust valve, all Tank cavities share the oil cooling pipeline, an oil inlet pipe of each Tank is connected with an oil outlet of the oil cooling machine in a summarizing way through the oil cooling pipeline, and an oil return pipe of each Tank is connected with an oil inlet of the oil cooling machine in a summarizing way through the oil cooling pipeline.
Further, the rear end parts of the first Tank cavity, the third Tank cavity and the fifth Tank cavity, and the front end parts of the second Tank cavity, the fourth Tank cavity and the sixth Tank cavity are respectively provided with a magnetic alloy cavity inner buckling type glass fiber insulation cover plate, and the magnetic alloy cavity inner buckling type glass fiber insulation cover plates and the cavity body are sealed through a magnetic alloy cavity oil cooling sealing ring; and the outer ends of the first Tank cavity and the sixth Tank cavity are provided with a cavity stainless steel short-circuit cover plate in a sealing manner through an oil rubber ring.
Further, the magnetic alloy ring adopts an iron-based nanocrystalline magnetically soft alloy ring, the iron-based nanocrystalline magnetically soft alloy ring comprises a stainless steel inner lining and a stainless steel belt outer lining, and SiO is repeatedly arranged between the stainless steel inner lining and the stainless steel belt outer lining in sequence 2 Coating and nano magnetic alloy strips.
Further, four magnetic alloy rings in each Tank cavity are arranged, and a preset interval is arranged between every two adjacent magnetic alloy rings in each Tank cavity.
Further, the power source system comprises a front-stage solid-state power source, a broadband transmission line transformer power distribution circuit and a final-stage electron tube, wherein the final-stage electron tube comprises a first electron tube and a second electron tube; the front-stage solid-state power source is sent to the grid input ends of the first electronic tube and the second electronic tube through the broadband transmission line transformer power distribution circuit, and the first electronic tube and the second electronic tube amplify power to hundred kilowatts and then send the power to corresponding Tank cavities through the bus parallel feeder power transmission device through a coupling capacitor.
Further, the broadband 1-division 2 power divider circuit developed based on the transmission line transformer technology is adopted in the broadband power divider circuit, the broadband 1-division 2 power divider circuit comprises a transmission line transformer wound based on a ferrite core, the input end of the transmission line transformer is connected with the front-stage solid-state power source, the two output ends of the transmission line transformer are respectively connected with the grid electrodes of the first electronic tube and the second electronic tube, and the two output ends of the transmission line transformer are respectively grounded through a matching resistor.
Further, the final electron tube adopts a dual electron quadrupole push-pull type power output structure.
Further, the anode of the final-stage valve is connected with a power supply through a choke coil.
Further, the choke coil comprises a Ni-Zn ferrite core and a high-voltage shielding wire, and the high-voltage shielding wire is wound on the Ni-Zn ferrite core.
The utility model adopts the technical proposal and has the following characteristics:
1. the high-frequency system of the synchrotron needs to realize the full particle beam operation from proton beam to heavy ion uranium beam, so the high-frequency system needs to have lower frequency, larger bandwidth, small charge-mass ratio of heavy ion beam, higher energy for accelerating heavy ion beam, higher accelerating voltage gradient for providing a high-frequency cavity, and because the high-frequency system magnetic alloy cavity adopts a liquid cooling multi-accelerating gap structure, the magnetic ring loaded by the cavity is high mu' p The Qf value and the low Q value are characterized by the magnetic alloy ring, so that the magnetic alloy ring has higher accelerating voltage gradient and wider working frequency band.
2. The magnetic alloy cavity has high working voltage, high loss power and high power density of the loaded magnetic alloy ring, so that the magnetic alloy ring heats seriously, and the cooling mode and the cooling efficiency are difficult problems; the magnetic alloy cavity adopts a direct oil cooling scheme, so that the cooling efficiency of the magnetic alloy ring is effectively improved, and meanwhile, the direct oil cooling scheme is selected in the direct liquid cooling scheme, so that the problems of magnetic ring corrosion, serious high-frequency cavity impedance, serious frequency reduction and the like caused by the direct liquid cooling scheme are successfully solved; because the magnetic alloy cavity adopts a direct oil cooling structure scheme, but the cooling oil is easier to cause chronic leakage than deionized water due to the physical characteristics of the cooling oil, the utility model solves the problem of chronic oil leakage by adopting an inner buckling type oil cooling sealing structure through the glass fiber insulating cover plate at the open end of the cavity.
3. The high-frequency system power source adopts an electron tube power source system, the power feeding mode of the electron tube power source system and the cavity is a capacitive coupling direct feed mode, the electron tube power source system has the characteristic of large dynamic range impedance matching, the high-frequency system power source design adopts a power amplification system of a front-stage solid state power source and a final-stage electron quadrupole tube, the power feeding mode of the electron tube power source system and the load magnetic alloy cavity is that a bus feeder is connected through an output coupling capacitor to directly feed power to an accelerating gap of the magnetic alloy cavity, and the electron tube power source system can have good impedance matching with the load cavity under the condition of large range impedance change of the magnetic alloy cavity by adopting the power feeding mode, so that power transmission is realized.
4. The high-frequency system power source adopts a two-pole amplifying mode of a front-stage solid-state push final-stage electron tube amplifier, the final-stage electron tube has a push-pull power output structure and comprises a single choke coil structure for improving a harmonic suppression degree, and an electron tube anode adopts a 10kV power supply mode.
5. The high-frequency system power source adopts an electron tube type power source, the power feeding mode of the electron tube type power source and the cavity is a capacitive coupling type direct feeding mode, the anode output radio frequency power of the electron tube is directly fed to the magnetic alloy cavity through a high-power coupling capacitor, and the designed power feeding mode enables the electron tube power source system and the magnetic alloy cavity with large dynamic range impedance change to have good impedance matching in a wider working frequency band, and can realize wide-band high-power transmission.
In conclusion, the utility model can be widely applied to a high-frequency system of the synchronous accelerator.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Like parts are designated with like reference numerals throughout the drawings. In the drawings:
FIG. 1 is a diagram showing the overall composition of a liquid-cooled high-gradient broadband synchrotron high-frequency system according to an embodiment of the present utility model;
FIG. 2 is a diagram of a three-gap oil-cooled magnetic alloy loading chamber according to an embodiment of the present utility model;
FIG. 3 is a diagram of a liquid-cooled magnetic alloy ring structure in accordance with an embodiment of the present utility model;
FIG. 4 is a diagram of a direct oil-cooled structure of a single Tank cavity of a magnetic alloy according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram of an oil-cooled seal of a magnetic alloy cavity in accordance with an embodiment of the present utility model;
FIG. 6 is a schematic diagram of a valve power source system according to an embodiment of the present utility model;
FIG. 7 is a schematic diagram of a prior-stage solid-state broadband transmission line transformer power distribution circuit in accordance with an embodiment of the present utility model;
fig. 8 shows a choke structure of the valve power source system of the present utility model.
Detailed Description
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For ease of description, spatially relative terms, such as "inner," "outer," "lower," "upper," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
The utility model provides a liquid cooling high gradient broadband synchrotron high-frequency system, which comprises a liquid cooling magnetic alloy cavity and an electron tube power source system; the liquid-cooled magnetic alloy cavity comprises a cavity body, a magnetic alloy ring, a bus parallel feeder power transmission device and a cavity oil cooling system; the bus parallel feeder power transmission device is connected with the first Tank cavity, the third Tank cavity and the fifth Tank cavity in parallel and then connected to the first valve output end of the valve power source system, and the bus parallel feeder power transmission device is connected with the second Tank cavity, the fourth Tank cavity and the sixth Tank cavity in parallel and then connected to the second valve output end of the valve power source system; the cavity oil cooling system adopts a direct oil cooling structure to cool the cavity body.
Exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
As shown in fig. 1, the liquid-cooled high-gradient broadband synchrotron high-frequency system loaded by the magnetic material provided by the embodiment comprises a liquid-cooled magnetic alloy cavity 1 and an electron tube power source system 2.
As shown in fig. 2, the liquid-cooled magnetic alloy cavity 1 comprises a cavity body 11, a magnetic alloy ring 12, a vacuum pipeline 13, a bus parallel feeder power transmission device, a three-dimensional adjustable bracket and a cavity oil cooling system 14.
The cavity body 11 is internally provided with a plurality of Tank cavities at intervals, each Tank cavity comprises four groups of magnetic alloy rings 12 (for example, but not limited to, the number of the magnetic alloy rings can be set according to the requirement), and all the Tank cavities are respectively defined as a first Tank cavity to a sixth Tank cavity according to the front-back sequence of the cavity. The rear end parts of the first Tank cavity, the third Tank cavity and the fifth Tank cavity, and the front end parts of the second Tank cavity, the fourth Tank cavity and the sixth Tank cavity are respectively provided with a magnetic alloy cavity inner buckling type glass fiber insulation cover plate 15, and a magnetic alloy ring acceleration gap 16 is arranged between the first Tank cavity and the second Tank cavity, between the first Tank cavity and the third Tank cavity, between the first Tank cavity and the fourth Tank cavity, and between the fifth Tank cavity and the sixth Tank cavity. And each group of Tank cavities is inserted with a magnetic alloy cavity vacuum pipeline 13, and the adjacent magnetic alloy cavity vacuum pipelines 13 are welded by ceramics and are communicated. The top of the cavity corresponding to each group of Tank cavity is provided with a magnetic alloy cavity oil outlet box 17, the bottom of the cavity corresponding to each group of magnetic alloy ring is provided with a magnetic alloy cavity oil inlet box 18, the position of each magnetic alloy cavity oil inlet box is provided with a magnetic alloy cavity oil drain valve 181, and each magnetic alloy cavity oil outlet box 17 is provided with a magnetic alloy cavity exhaust valve 171.
The bus parallel feeder power transmission device connects the first Tank cavity, the third Tank cavity and the fifth Tank cavity in parallel and then is connected to the power output end of the first electronic tube of the electronic tube power source system 2, and the bus parallel feeder power transmission device connects the second Tank cavity, the fourth Tank cavity and the sixth Tank cavity of the magnetic alloy cavity in parallel and then is finally connected to the power output end of the second electronic tube of the electronic tube power source system 2.
The three-dimensional adjustable bracket is used for on-line installation of the magnetic alloy cavity, alignment installation of the vacuum pipeline and the like.
The cavity oil cooling system 14 comprises an oil cooler and oil cooling pipelines, all Tank cavities share one inlet and one outlet oil cooling pipeline, the cavity comprises 6 oil inlet pipes (taking this as an example and not limiting the same), and the total oil collecting pipes are connected with an oil outlet of the oil cooler through the oil cooling pipelines; the cavity has 6 oil return pipes (for example, without limitation), and the total oil collecting pipe is connected with an oil inlet of the oil cooler through an oil cooling pipeline, cooling oil adopts a lower inlet and upper outlet mode, and the oil circulated from the cavity is directly cooled in a circulating way through the oil cooler, so that cooling oil flows through each position in the Tank cavity. The cavity structure of the embodiment adopts a three-acceleration-gap direct oil cooling structure, and the cavity adopts direct oil cooling.
In a preferred embodiment, as shown in FIG. 3, the magnetic alloy ring 12 of the present utility model employs an iron-based nanocrystalline magnetically soft alloy ring, which is a novel magnetically loaded material having a higher permeability and μ 'than conventional ferrite rings' p Qf value, wider frequency band (low Q value), higher saturation magnetic flux density, and curie temperature value. The magnetic alloy ring 12 in this embodiment may be made of an iron-based nanocrystalline magnetically soft alloy strip with a thickness of 13um passing through SiO of the strip 2 Insulating coating, equal tension winding of a strip, high Wen Jiaci heat treatment of a wound magnetic ring and encapsulation of the end face of a magnetic alloy ring to manufacture an annular structure, wherein the annular structure sequentially comprises a stainless steel inner liner 121 and a stainless steel strip outer liner 122 from inside to outside, and the stainless steel inner liner 121 and the stainless steel strip outer liner 122 are sequentially repeatedly provided withSiO 2 A coating 123 and a nano-magnetic alloy ribbon 124. The magnetic alloy ring of the embodiment adopts the size of(outer diameter. Inner diameter. Thickness) of core performance parameter μ' p Qf@0.3MHz > 6.2GHz, as an example, but not limited thereto. In the research and development of the iron-based nanocrystalline magnetically soft alloy ring, the size and various performance parameters of the iron-based nanocrystalline magnetically soft alloy ring need to be fully and comprehensively considered, so that the hysteresis loop of the cavity loading magnetic ring is prevented from being in a nonlinear section, and the magnetostriction effect of the cavity loading magnetic ring is reduced. The high voltage and low working frequency requirements of the high-frequency system enable the magnetic flux density to be high when the cavity is loaded with the magnetic alloy ring to work, the high magnetic flux density can lead to magnetostriction effect of the magnetic alloy material, and the performance of the magnetic ring is reduced; the utility model fully considers the material characteristics in the development and design of the magnetic alloy ring, controls the maximum working magnetic flux density of the magnetic alloy ring and keeps the high performance characteristics thereof.
Further, as shown in fig. 4, the magnetic alloy ring 12 is mounted in the Tank cavity by a glass fiber insulation support block 3 supported from the outer diameter of the magnetic ring, i.e. a plurality of glass fiber insulation support blocks 3 are circumferentially arranged between the cavity body 11 and the magnetic alloy ring 12. The distance between the magnetic rings in each Tank inner magnetic alloy ring is 8mm (for example, the gap is not limited to the above, and the gap can be set according to actual needs), so that cooling oil can flow through the gap, and the gap is used for cooling the surface of the magnetic ring in the magnetic alloy ring.
Further, as shown in fig. 5, the outer ends of the first Tank cavity and the sixth Tank cavity are provided with a cavity stainless steel short-circuit cover plate 4 through an oil rubber ring in a sealing way, and the inner buckling type glass fiber insulation cover plate 15 and the cavity body 11 are sealed through a magnetic alloy cavity oil-cooling sealing ring. The gap distance of the cavity accelerating gap structure is 40mm, and the actual measurement result of the vacuum degree is better than 1 x 10 - 12 mBar。
In summary, the high gradient magnetic alloy cavity provided in this embodiment has high power density and serious heat generation of the magnetic alloy ring due to high voltage gradient of the cavity, so that the cavity cooling structure is specially designed, and direct oil is used for cooling the magnetic alloy cavityThe cold structure solves the problem of low cooling efficiency of the loaded magnetic alloy ring, and avoids the problems of magnetic ring corrosion and serious cavity impedance reduction caused by adopting a direct water cooling mode. In addition, the cavity of the present embodiment is loaded with a high μ' p The high-performance magnetic alloy ring with Qf value adopts a multi-acceleration gap structure, so that the cavity reaches high impedance, high gap voltage is obtained, and high acceleration voltage gradient is obtained.
In a preferred embodiment, as shown in fig. 6, the valve power source system 2 includes a front-stage solid state power source 21, a broadband power distribution circuit 22, and a final valve amplifier 23, the final valve amplifier 23 including a first valve and a second valve.
The front-stage solid-state power source 21 of the present embodiment adopts a four-stage tube of TH558 SC high-power electronics of the company talus, france; the output power of the front-stage solid-state power source 21 is fed to the grid input ends of the first electronic tube and the second electronic tube through the broadband power divider circuit 22, the two electronic tubes amplify the power to hundred kilowatts, and then output the amplified power, and the amplified power is directly connected with the bus parallel feeder power transmission device through a coupling capacitor to send the power to the 6 Tank cavities, so that the energy input by the power source is converted into electromagnetic fields for accelerating or various operations on beams.
Further, as shown in fig. 7, the wideband power divider circuit 22 is a wideband 1-division 2 power divider circuit 22 developed based on a transmission line transformer technology, and includes a transmission line transformer 221 wound based on a ferrite core, an input end of the transmission line transformer is connected to a pre-stage solid-state power source 21, two output ends of the transmission line transformer 221 are respectively connected to gates of the first electron tube and the second electron tube, and two output ends of the transmission line transformer 221 are respectively grounded through a matching resistor 222 for impedance matching with the transmission line transformer.
Further, the final-stage electron tube amplifier 23 adopts a dual electron tube push-pull type power output structure, the maximum power output by the front-stage broadband solid-state power source 21 is 8kW, and the working frequency is 0.3-12.0 MHz. The utility model adopts the electron tube push-pull type power source, reduces the installation size of the power source structure and reduces the complexity of a power source system while obtaining high power.
Further, the filament of the final-stage electron tube amplifier 23 is connected with a filament power supply system, the power output is 23V/500A, the grid electrode of the electron tube is connected with a grid power supply system, the power output is minus 160V, the grid electrode of the electron tube is connected with a grid power supply system, the power output is 1000V, and the grid power supply is designed in a pulse modulation mode; the power supply of the electron tube anode adopts a 10kV power supply mode, the total power supply voltage of a single tube is larger than 15kV, and the anode of the electron tube is connected with a 10kV anode power supply system through a high-power choke 24.
Further, as shown in fig. 8, the high-power choke 24 is mainly used in a tube anode dc power supply system, and is used for preventing the anode rf power from flowing back to the dc power supply, which causes damage to the power supply, the inductance of the choke at the frequency of 0.3MHz is designed according to the power supply to be greater than 550uH, and the withstand voltage of the choke is greater than 30kV. The high-power choke 24 comprises a Ni-Zn ferrite core and a high-voltage shielding wire, the Ni-Zn ferrite core is 500 x 300 x 25mm in size, the Ni-Zn ferrite core is wound with the high-voltage shielding wire, and a double-wire winding mode is adopted to offset the influence of the direct-current magnetic field on the magnetic permeability of the ferrite core.
In summary, the valve power source system 2 of the embodiment is connected with the cavity by adopting a capacitive coupling direct feed mode, so that the problem of impedance matching with the cavity which is not 50 ohm and is not pure is solved, and meanwhile, high-power transmission matching can be realized under the condition of large dynamic impedance value in the whole working frequency band; the power source of the high-frequency system adopts a two-pole amplifying mode of a front-stage solid-state push final-stage electron tube amplifier, the final-stage electron tube amplifier is provided with a push-pull type power output structure and comprises a single choke coil structure for improving a harmonic suppression degree, and the power source is designed to adopt a double-electron tube push-pull type single choke coil structure, so that the performance of the harmonic suppression degree is further improved, and meanwhile, the function of low-frequency band choke is better achieved.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In the description of the present specification, reference to the terms "one preferred embodiment," "further," "specifically," "in the present embodiment," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present specification. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. The liquid cooling high gradient broadband synchrotron high frequency system is characterized by comprising a liquid cooling magnetic alloy cavity and an electron tube power source system;
the liquid-cooled magnetic alloy cavity comprises a cavity body, magnetic alloy rings, a bus parallel feeder power transmission device and a cavity oil cooling system, wherein a plurality of Tank cavities are arranged in the cavity body at intervals, each Tank cavity comprises a plurality of magnetic alloy rings, the Tank cavities are defined as first to sixth Tank cavities along the front and back of the cavity, the bus parallel feeder power transmission device is connected with the first Tank cavity, the third Tank cavity and the fifth Tank cavity in parallel and then connected to the first electronic tube output end of the electronic tube power source system, and the bus parallel feeder power transmission device is connected with the second Tank cavity, the fourth Tank cavity and the sixth Tank cavity in parallel and then connected to the second electronic tube output end of the electronic tube power source system;
the cavity oil cooling system adopts a direct oil cooling structure to cool the cavity body.
2. The liquid cooling high-gradient broadband synchrotron high-frequency system according to claim 1, wherein the cavity oil cooling system comprises an oil cooling machine and an oil cooling pipeline, a cavity oil outlet box is arranged at the top of the cavity body corresponding to each group of Tank cavities, a cavity oil inlet box is arranged at the bottom of the cavity body of each group of Tank cavities, an oil drain valve is arranged at each cavity oil inlet box, an exhaust valve is arranged on each cavity oil outlet box, all Tank cavities share the oil cooling pipeline, an oil inlet pipe of each Tank is connected with an oil outlet of the oil cooling machine in a gathering mode through the oil cooling pipeline, and an oil return pipe of each Tank is connected with an oil inlet of the oil cooling machine in a gathering mode through the oil cooling pipeline.
3. The liquid cooling high-gradient broadband synchrotron high-frequency system according to claim 1, wherein rear ends of the first Tank cavity, the third Tank cavity and the fifth Tank cavity and front ends of the second Tank cavity, the fourth Tank cavity and the sixth Tank cavity are respectively provided with a magnetic alloy cavity inner buckling type glass fiber insulation cover plate, and the magnetic alloy cavity inner buckling type glass fiber insulation cover plate and the cavity body are sealed through a magnetic alloy cavity oil cooling sealing ring; and the outer ends of the first Tank cavity and the sixth Tank cavity are provided with a cavity stainless steel short-circuit cover plate in a sealing manner through an oil rubber ring.
4. The high-frequency system of the liquid-cooled high-gradient broadband synchrotron as claimed in claim 1, wherein the magnetic alloy ring is an iron-based nanocrystalline magnetically soft alloy ring, the iron-based nanocrystalline magnetically soft alloy ring comprises a stainless steel inner lining and a stainless steel belt outer lining, and SiO is repeatedly arranged between the stainless steel inner lining and the stainless steel belt outer lining in sequence 2 Coating and nano magnetic alloy strips.
5. The high-frequency system of the liquid-cooled high-gradient broadband synchrotron according to claim 1, wherein the number of the magnetic alloy rings in each Tank cavity is four, and a preset interval is arranged between the adjacent magnetic alloy rings in each Tank cavity.
6. The liquid cooled high gradient wideband synchrotron high frequency system of claim 1, wherein the power source system comprises a pre-stage solid state power source, a wideband transmission line transformer power distribution circuit, and a final stage valve, the final stage valve comprising a first valve and a second valve;
the front-stage solid-state power source is sent to the grid input ends of the first electronic tube and the second electronic tube through the broadband transmission line transformer power distribution circuit, and the first electronic tube and the second electronic tube amplify power to hundred kilowatts and then send the power to corresponding Tank cavities through the bus parallel feeder power transmission device through a coupling capacitor.
7. The high-frequency system of the liquid-cooled high-gradient broadband synchrotron as claimed in claim 6, wherein the broadband power divider circuit is a broadband 1-division-2 power divider circuit developed based on a transmission line transformer technology, and comprises a transmission line transformer wound based on a ferrite core, wherein an input end of the transmission line transformer is connected with the pre-stage solid state power source, two output ends of the transmission line transformer are respectively connected with grid electrodes of the first electronic tube and the second electronic tube, and two output ends of the transmission line transformer are respectively grounded through a matching resistor.
8. The liquid cooled high gradient wideband synchrotron high frequency system of claim 6 or 7, wherein the final stage electron tube adopts a dual electron quadrupole push-pull power output structure.
9. The liquid cooled high gradient broadband synchrotron high frequency system of claim 6, wherein the anode of the final stage valve is connected to a power supply through a choke.
10. The liquid cooled high gradient wideband synchrotron high frequency system of claim 9, wherein the choke comprises a Ni-Zn ferrite core and a high voltage shielding wire, the Ni-Zn ferrite core being wound with the high voltage shielding wire.
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