CN113382527B - Superconducting resonance accelerating cavity with composite structure - Google Patents
Superconducting resonance accelerating cavity with composite structure Download PDFInfo
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- CN113382527B CN113382527B CN202110647936.3A CN202110647936A CN113382527B CN 113382527 B CN113382527 B CN 113382527B CN 202110647936 A CN202110647936 A CN 202110647936A CN 113382527 B CN113382527 B CN 113382527B
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- 239000002131 composite material Substances 0.000 title claims abstract description 74
- 239000000463 material Substances 0.000 claims abstract description 39
- 239000013500 performance material Substances 0.000 claims abstract description 11
- 238000000605 extraction Methods 0.000 claims description 37
- 239000010410 layer Substances 0.000 claims description 36
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- 230000001133 acceleration Effects 0.000 claims description 14
- 239000004020 conductor Substances 0.000 claims description 8
- 239000002356 single layer Substances 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 3
- 229910052734 helium Inorganic materials 0.000 abstract description 3
- 239000001307 helium Substances 0.000 abstract description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010791 quenching Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 11
- 238000004140 cleaning Methods 0.000 description 9
- 229910052758 niobium Inorganic materials 0.000 description 9
- 239000010955 niobium Substances 0.000 description 9
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 9
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 230000005672 electromagnetic field Effects 0.000 description 7
- 239000000243 solution Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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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
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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
- H05H7/04—Magnet systems, e.g. undulators, wigglers; Energisation thereof
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- Physics & Mathematics (AREA)
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- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Particle Accelerators (AREA)
Abstract
The invention relates to a superconducting resonance accelerating cavity with a composite structure, wherein the inner layer material is a high-superconducting-performance material, so that the superconducting cavity with the composite structure has good radio frequency performance; the outer layer material is a high heat conduction material, so that the thickness of the outer layer material can be effectively increased, on one hand, the mechanical stability of the composite superconducting cavity can be obviously improved, on the other hand, the frequency detuning caused by factors such as helium pressure fluctuation, lorentz detuning, microphonics and the like can be effectively inhibited, on the other hand, a good transverse transmission channel can be provided for heat generated by power loss of the inner surface of the composite superconducting cavity, the thermal quench of the composite superconducting cavity due to defects, secondary electron multiplication effect and field emission effect can be effectively slowed down, and the operation thermal stability of the composite superconducting cavity is obviously improved.
Description
Technical Field
The invention relates to a superconducting cavity, in particular to a superconducting resonant accelerating cavity with a composite structure, and belongs to the technical field of particle accelerators.
Background
The accelerator is an indispensable research means in the fields of high-energy physics and basic model, life and material science, nuclear physics, radionuclide research and the like, has important application value in the aspects of energy, medical treatment, national defense and the like, and the core component of the accelerator is a superconducting cavity. The radio frequency superconducting technology is used as a preferred scheme in the current important project of the accelerator front field in construction, planning and planning at home and abroad. At present, the superconducting cavity is mainly manufactured by adopting a high-purity niobium plate with the RRR (residual resistivity) of 300 and the thickness of 3-4mm, and the application range covers various charged particles with beta (relativistic velocity) of 0.05 to 1.
However, the pure niobium superconducting cavity has a single-layer structure, and the application of the pure niobium superconducting cavity has serious problems: the thin-wall single-layer structure of the pure niobium superconducting cavity is poor in mechanical stability and thermal stability, frequency detuning of the pure niobium superconducting cavity due to helium pressure fluctuation, lorentz detuning, microphonics and other factors is easy to occur, and thermal quenching of the pure niobium superconducting cavity due to defects, secondary electron multiplication effect and field emission effect is easy to occur.
Thus, the above problems limit the stable operation and application of current and future high energy, high current strength rf superconducting accelerators.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a superconducting resonant accelerating cavity with a composite structure, which is formed by a high heat conduction material and a high superconducting performance material, so as to solve the problems that the mechanical stability and the thermal stability of a pure niobium superconducting cavity are poor and the stable operation of a superconducting accelerator can not be satisfied.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a composite structure superconducting resonance accelerating cavity, the superconducting resonance accelerating cavity is a TM composite superconducting cavity, the TM composite superconducting cavity includes: the accelerating units are of ellipsoidal double-layer shell structures, the outer layer structures of the accelerating units are made of high-heat-conductivity materials, the inner layer structures of the accelerating units are made of high-superconductivity materials, beam ports are machined on two sides of each accelerating unit, two adjacent accelerating units are sequentially connected in series through the beam ports, and two beam ports located on the outermost sides of each accelerating unit form a beam injection port and a beam extraction port respectively; the beam injection pipeline and the beam extraction pipeline are respectively in butt joint with a beam injection port and a beam extraction port of the acceleration unit; the main coupler is connected with the beam extraction pipeline and is used for feeding power into the TM composite superconducting cavity; the two high-order mode couplers are respectively connected with the beam injection pipeline and the beam extraction pipeline; and the extraction port is connected with the beam extraction pipeline.
In the composite structure superconducting resonance accelerating cavity, preferably, the thickness of the outer layer structure of the accelerating unit is 4-10mm, and the thickness of the inner layer structure of the accelerating unit is 0.001-4mm.
The composite structure superconducting resonance accelerating cavity is characterized in that the beam injection pipeline and the beam extraction pipeline are of a composite material structure consisting of an outer layer high heat conduction material and an inner layer high superconducting performance material;
or the beam injection pipeline and the beam extraction pipeline are of a single-layer structure formed by high-superconducting-performance materials.
The composite structure superconducting resonance accelerating cavity, preferably, the positions of the main coupler and the high-order mode coupler are different by 38 degrees.
The superconducting resonance accelerating cavity with the composite structure is a TEM composite superconducting cavity, and the TEM composite superconducting cavity comprises: an outer cavity cylinder body forming an outer conductor of the TEM composite superconducting cavity; an inner cavity cylinder body which is arranged on the central line of the outer cavity cylinder body to form an inner conductor of the TEM composite superconducting cavity, and an accelerating annular cavity is formed between the inner cavity cylinder body and the outer cavity cylinder body; the annular short circuit plates are respectively connected with two ends of the accelerating annular cavity between the outer cavity cylinder body and the inner cavity cylinder body to form a short circuit end; the beam flow pipelines are symmetrically connected to two sides of the middle part of the outer cavity cylinder body, and beam holes which are concentric with the two beam flow pipelines and have the same inner diameter are processed in the center of the inner cavity cylinder body, so that the outer cavity cylinder body and the inner cavity cylinder body form open ends at the positions of the beam flow pipelines; the power coupling tube and the power extraction tube are symmetrically connected to the other two sides of the middle part of the outer cavity cylinder body; the outer layer structure of the outer cavity cylinder body, the inner cavity cylinder body and the annular short circuit plate are all of double-layer composite structures, namely, the outer layer structure of the outer cavity cylinder body, the inner cavity cylinder body and the annular short circuit plate are all of high-heat-conductivity materials, and the inner layer structure of the outer cavity cylinder body, the inner cavity cylinder body and the annular short circuit plate are all of high-superconductivity materials.
Preferably, the thickness of the inner layer structure of the outer cavity cylinder body and the inner cavity cylinder body annular short circuit plate is 0.001mm-4mm, and the thickness of the outer layer structure of the outer cavity cylinder body, the inner cavity cylinder body and the annular short circuit plate is 4mm-10mm.
Preferably, at least one openable cleaning pipe is respectively arranged on the two annular short circuit plates, one end of the cleaning pipe is communicated with the outside, and the other end of the cleaning pipe is communicated with the accelerating annular cavity.
Preferably, the orientations of the power coupling tube and the power extraction tube are the same as the distance between the two beam pipelines and one end of the outer cavity cylinder, but the orientations are different by 90 degrees.
The composite structure superconducting resonance accelerating cavity is characterized in that the beam pipeline, the power coupling pipe, the power extraction end and the cleaning pipe are all of a single-layer structure, the material is a high-superconductivity material, and the thickness is 3-4mm.
The composite structure superconducting resonance accelerating cavity preferably refers to a material with the heat conductivity higher than 100W/mK at the temperature of 4K; the high-superconducting-performance material refers to a material with a superconducting transition temperature higher than 9K under a zero magnetic field and a overheat magnetic field higher than 150mT under a temperature of 4K.
Due to the adoption of the technical scheme, the invention has the following advantages:
1) The inner layer material of the composite superconducting cavity provided by the invention has the superconducting transition temperature higher than 9K under the zero magnetic field, and simultaneously has the overheat magnetic field (H) under the temperature of 4K sh ) The high-superconducting-performance material with the temperature higher than 150mT is adopted, so that the superconducting cavity with the composite structure has good radio frequency performance;
2) The outer layer material of the composite superconducting cavity is a high heat conduction material with the heat conductivity higher than 100W/mK at the temperature of 4K, so that the thickness of the outer layer material can be effectively increased, on one hand, the mechanical stability of the composite superconducting cavity can be obviously improved, on the other hand, the frequency detuning caused by factors such as helium pressure fluctuation, lorentz detuning, microphonics and the like can be effectively inhibited, on the other hand, a good transverse transmission channel can be provided for heat generated by power loss on the inner surface of the composite superconducting cavity, the thermal quench of the composite superconducting cavity due to defects, secondary electron multiplication effect and field emission effect can be effectively slowed down, and the operation thermal stability of the composite superconducting cavity is obviously improved;
3) The electromagnetic waves in the inner space of the composite superconducting cavity provided by the invention are only distributed in the range of about three penetration depths of the surface layer of the superconducting material, so that the thickness of the inner layer material can be reduced, and the manufacturing cost of the composite superconducting cavity is effectively reduced;
4) The composite superconducting cavity provided by the invention can provide stability guarantee for long-time high-stability operation of the high-current high-intensity superconducting accelerator.
In conclusion, the superconducting cavity adopts a composite structure of high-heat-conductivity materials and high-superconducting-performance materials from the prior art, so that the mechanical stability and the thermal stability of the superconducting cavity can be obviously improved on the premise of ensuring the good radio frequency performance of the superconducting cavity, and the purpose of high-stability operation of the superconducting accelerator is achieved.
Drawings
FIG. 1 is a schematic diagram of a transverse magnetic wave type composite superconducting cavity according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 is a partial structural view of a transverse magnetic wave-type composite superconducting cavity provided by this embodiment;
fig. 4 is a front view of a coaxial transverse electromagnetic wave type composite superconducting cavity according to a second embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of FIG. 4;
fig. 6 is a plan view of the coaxial transverse electromagnetic wave type composite superconducting cavity provided by the embodiment;
FIG. 7 is a schematic cross-sectional view of FIG. 6;
fig. 8 is a partial structural view of a coaxial transverse electromagnetic wave type composite superconducting cavity provided by this embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Moreover, the use of the terms first, second, etc. to define elements is merely for convenience in distinguishing the elements from each other, and the terms are not specifically meant to indicate or imply relative importance unless otherwise indicated.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "disposed," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Embodiment one:
as shown in fig. 1 to 3, the present embodiment provides a transverse magnetic wave type composite structure superconducting resonance accelerating cavity (TM composite superconducting cavity for short) with an operating frequency of 1.3GHz, and the TM composite superconducting cavity 100 includes: the accelerating units 101 are of ellipsoidal double-layer shell structures, the outer layer structure of each accelerating unit 101 is made of a high-heat-conductivity material A, the inner layer structure is made of a high-superconductivity material B, beam ports are processed on two sides of each accelerating unit 101, two adjacent accelerating units 101 are sequentially connected in series through the beam ports (the number of the accelerating units is generally 1-9 according to design requirements), two beam ports positioned on the outermost side of each accelerating unit 101 form a beam injection port and a beam extraction port respectively, and each accelerating unit 101 is used for accelerating charged particles by utilizing an electromagnetic field in each accelerating unit; beam injection pipe 102 and beam extraction pipe 103 respectively interface with the beam injection port and beam extraction port of acceleration unit 101; a main coupler 104 connected to the beam extraction pipe 103, the main coupler 104 being configured to feed power into the TM composite superconducting cavity 100; the high-order mode couplers 105 are respectively connected with the beam injection pipeline 102 and the beam extraction pipeline 103, and the high-order mode couplers 105 are used for remarkably attenuating high-order modes and improving the stability of the accelerated particle beam; and the extraction port 106 is connected with the beam extraction pipeline 102, and the extraction port 106 is used for extracting the power in the TM composite superconducting cavity 100 and monitoring the information of an electromagnetic field in the cavity.
In the above embodiment, it is preferable that the thickness of the outer layer structure of the accelerating element 101 is 4 to 10mm and the thickness of the inner layer structure of the accelerating element 101 is 0.001 to 4mm.
In the above embodiment, it is preferable that the high heat conductive material means a material having a heat conductivity higher than 100W/mK at a temperature of 4K, such as oxygen-free copper or high-purity aluminum or the like; the high superconducting material has a superconducting transition temperature higher than 9K under zero magnetic field, and a superheated magnetic field (H) at 4K sh ) Materials above 150mT, such as for example the metals niobium, nb 3 Sn、MgB 2 Or NbN, etc.
In the above embodiment, it is preferable that the beam injection pipe 102 and the beam extraction pipe 103 are of a composite material structure composed of an outer layer high heat conductive material and an inner layer high superconducting performance material; alternatively, the beam injection pipe 102 and the beam extraction pipe 103 are of a single-layer structure composed of a high-superconducting-performance material.
In the above embodiment, the positions of the main coupler 104 and the higher order mode coupler 105 are preferably different by 38 °.
In the above embodiment, it is preferable that the inside diameters of the beam injection pipe 102 and the beam extraction pipe 103 are the same as the beam diameter of the acceleration unit 101.
When the TM composite superconducting cavity 100 provided in this embodiment works, high-frequency power is fed into the TM composite superconducting cavity 100 through the main coupler 104, a transverse magnetic wave mode (TM) electromagnetic field is excited in the TM composite superconducting cavity 100, meanwhile, charged particles enter the TM composite superconducting cavity 100 from the beam injection pipe 102, the TM electromagnetic field in each acceleration unit 101 accelerates the charged particles, so that the energy of the charged particles is increased, and then the charged particles leave the TM composite superconducting cavity 100 from the beam extraction pipe 103.
Embodiment two:
as shown in fig. 4 to 8, the present embodiment provides a coaxial transverse electromagnetic wave type composite superconducting resonator acceleration cavity (abbreviated as a TEM composite superconducting cavity) having an operating frequency of 162.5MHz, the TEM composite superconducting cavity 200 comprising: an outer cavity cylinder 201 forming an outer conductor of the TEM composite superconducting cavity 200; an inner cavity cylinder 202 disposed on the center line of the outer cavity cylinder 202 to form an inner conductor of the TEM composite superconducting cavity 200, and an acceleration ring cavity 203 is formed between the inner cavity cylinder 202 and the outer cavity cylinder 201; the annular short circuit plates 204, wherein the two annular short circuit plates 204 are respectively connected with two ends of the acceleration ring cavity 203 between the outer cavity cylinder 201 and the inner cavity cylinder 202 to form a short circuit end; the beam pipes 205, the two beam pipes 205 are symmetrically connected to two sides of the middle part of the outer cavity cylinder 201, and beam holes concentric with the two beam pipes 205 and having the same inner diameter are processed at the center of the inner cavity cylinder 202, so that the outer cavity cylinder 201 and the inner cavity cylinder 202 form an open end at the position of the beam pipe 205; the power coupling tube 206 and the power extraction tube 207 are symmetrically connected to the other two sides of the middle part of the outer cavity barrel 201, the power coupling tube 206 is used for being in butt joint with the coupler to feed power into the TEM composite superconducting cavity 200, and the power extraction tube 207 is used for extracting power in the TEM composite superconducting cavity 200 and monitoring information of electromagnetic fields in the cavity.
The outer cavity cylinder 201, the inner cavity cylinder 202 and the annular short circuit plate 204 are all of a double-layer composite structure, namely, the outer layer structures of the outer cavity cylinder 201, the inner cavity cylinder 202 and the annular short circuit plate are all of a high-heat-conductivity material A, and the inner layer structures of the outer cavity cylinder 201, the inner cavity cylinder 202 and the annular short circuit plate are all of a high-superconductivity material B.
In the above embodiment, the thickness of the inner layer structure of the outer chamber cylinder 201, the inner chamber cylinder 202 and the annular short circuit plate 204 is preferably 0.001mm to 4mm, preferably 1mm; the outer layer structure thickness of the outer cavity cylinder 201, the inner cavity cylinder 202 and the annular short-circuiting plate 204 is 4mm-10mm, preferably 8mm.
In the above embodiment, it is preferable that at least one openable and closable cleaning tube 208 is provided on each of the two annular shorting plates 204, one end of the cleaning tube 208 is connected to the outside, and the other end of the cleaning tube 208 is connected to the acceleration ring cavity 203, whereby the inner surface of the TEM composite superconducting cavity 200 can be cleaned by the cleaning tube 208.
In the above embodiment, the orientations of the power coupling tube 206 and the power extraction tube 207 are preferably the same as the distance of the two beam tubes 205 from one end of the outer chamber barrel 201, but the orientations are different by 90 degrees.
In the above embodiment, the beam tube 205, the power coupling tube 206, the power extraction end 207 and the cleaning tube 208 are preferably all of a single-layer structure, and the material is a high-superconductivity material B, and the thickness is 3-4mm, preferably 3mm.
In the above embodiment, it is preferable that the high heat conductive material means a material having a heat conductivity higher than 100W/mK at a temperature of 4K, such as oxygen-free copper or high-purity aluminum or the like; the high superconducting material has a superconducting transition temperature higher than 9K under zero magnetic field, and a superheated magnetic field (H) at 4K sh ) Materials above 150mT, such as for example the metals niobium, nb 3 Sn、MgB 2 Or NbN, etc.
When the TEM composite superconducting cavity 200 provided in this embodiment works, high-frequency power is fed into the TEM composite superconducting cavity 200 through the power coupling tube 206, and a coaxial transverse electromagnetic wave mode (TEM) electromagnetic field is excited in the TEM composite superconducting cavity 200, and at the same time, charged particles enter the TEM composite superconducting cavity 200 from one beam tube 205, and the TEM electromagnetic field in the accelerating ring cavity 203 between the outer cavity cylinder 201 and the inner cavity cylinder 202 accelerates the charged particles, so that the energy of the charged particles increases, and then leaves the TEM composite superconducting cavity 200 from the other beam tube 205.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention 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 invention.
Claims (4)
1. The superconducting resonance accelerating cavity with the composite structure is characterized in that the superconducting resonance accelerating cavity is a TM composite superconducting cavity (100), and the TM composite superconducting cavity (100) comprises:
the accelerating units (101) are of ellipsoidal double-layer shell structures, the outer layer structure of each accelerating unit (101) is made of high-heat-conductivity materials, the inner layer structure is made of high-superconductivity materials, beam ports are processed on two sides of each accelerating unit (101), two adjacent accelerating units (101) are sequentially connected in series through the beam ports, and two beam ports located on the outermost side of each accelerating unit (101) form a beam injection port and a beam extraction port respectively;
a beam injection pipeline (102) and a beam extraction pipeline (103) are respectively in butt joint with a beam injection port and a beam extraction port of the acceleration unit (101);
a main coupler (104) connected with the beam extraction pipeline (103), wherein the main coupler (104) is used for feeding power into the TM composite superconducting cavity (100);
the high-order mode couplers (105), the two high-order mode couplers (105) are respectively connected with the beam injection pipeline (102) and the beam extraction pipeline (103);
an extraction port (106) connected to the beam extraction pipe (103);
-the main coupler (104) and the high order mode coupler (105) are positioned 38 ° apart;
the high superconducting material is Nb 3 Sn、MgB 2 Or NbN.
2. The composite structure superconducting resonance acceleration chamber of claim 1, characterized in that the outer layer structure thickness of the acceleration unit (101) is 4-10mm, and the inner layer structure thickness of the acceleration unit (101) is 0.001-4mm.
3. The superconducting resonator acceleration chamber of claim 1, characterized in that the beam injection pipe (102) and the beam extraction pipe (103) are a composite structure composed of an outer layer of high heat conductive material and an inner layer of high superconducting performance material;
or the beam injection pipeline (102) and the beam extraction pipeline (103) are of a single-layer structure formed by high-superconducting-performance materials.
4. A composite structure superconducting resonator acceleration chamber according to claim 3 characterized in, that the high thermal conductivity material is a material with a thermal conductivity higher than 100W/mK at 4K temperature.
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| CN113382527A (en) | 2021-09-10 |
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