CN104835706A - Relativistic klystron amplifier output cavity - Google Patents
Relativistic klystron amplifier output cavity Download PDFInfo
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- CN104835706A CN104835706A CN201510260496.0A CN201510260496A CN104835706A CN 104835706 A CN104835706 A CN 104835706A CN 201510260496 A CN201510260496 A CN 201510260496A CN 104835706 A CN104835706 A CN 104835706A
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- output cavity
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- nose cone
- amplifier output
- klystron amplifier
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Abstract
The invention provides a technical scheme of a relativistic klystron amplifier output cavity. According to the scheme provided by the invention, a structure that an outer cylinder of the output cavity is provided with outer blades and an inner conductor of the output cavity is provided with inner blades, a nose cone, an outer supporting ring, an inner supporting ring, a collector and a coupling ring can increase the length of an interaction area of microwaves and electron beams, thereby being capable of reducing the electric field intensity of the output cavity, and avoiding electric field breakthrough. In addition, a radius gradually changing blade structure changes field distribution of the interaction area of the microwaves and the electron beams, thereby being conducive to energy extraction of the electron beams and outward spreading of the microwaves, and thus improving the energy conversion efficiency of the output cavity.
Description
Technical field
What the present invention relates to is microwave electronics field, especially a kind of relativistic klystron amplifier output cavity.
Background technology
Along with the progress of plasma technique, Pulse Power Techniques and the development of complicated PIC simulation tool, High-Power Microwave technology also develops by leaps and bounds, especially in the development of high-power microwave source, achieve great progress, successively occur wide variety of different types of high-power pulsed ion beams.Relativistic klystron amplifier is the important high-power pulsed ion beams of a class, has the advantages such as high power, high efficiency, output microwave phase and amplitude stabilization, is all widely used in fields such as novel accelerator, High power radar, advanced communication systems.In order to the power direction of Xiang Genggao develops, bundle pressure and the line of electron beam must be improved.After bundle pressure and line improve, microwave output power is also improved accordingly.But large Electron Beam fails to be convened for lack of a quorum and produces larger space-charge force, makes the kinetic energy of electronics reduce, thus reduces the conversion efficiency of relativistic klystron; On the other hand, when exporting microwave power and being larger, the electric field strength of output cavity can be higher, if be greater than breakdown threshold, can produce electric field breakdown, and device cannot normally be worked, and this is the weak point existing for prior art.
Summary of the invention
Object of the present invention, be exactly for the deficiency existing for prior art, and a kind of technical scheme of relativistic klystron amplifier output cavity is provided, the outer leafs that the program is arranged on output cavity urceolus, the intra vane that output cavity inner wire is arranged, nose cone, outer support ring, inside support ring, collector, the structure of coupling loop, the length of microwave and electron beam interaction area can be increased, the electric field strength of output cavity can be reduced, avoid electric field breakdown, and radius gradual change blade construction changes the field distribution of microwave and electron beam interaction area, the extraction and the microwave that are conducive to electron beam energy are outwards propagated, and then improve the energy conversion efficiency of output cavity.
This programme is achieved by the following technical measures:
A kind of relativistic klystron amplifier output cavity, includes output cavity urceolus, output cavity inner wire, nose cone, collector, coupling loop, outer support ring and inside support ring; Output cavity inner wire is provided with collector near the one end exporting gap; The lateral wall of collector is provided with nose cone; Nose cone is provided with coupling loop; Inside support ring is provided with between nose cone and output cavity inner wire; Outer support ring is provided with between nose cone and output cavity urceolus; Output cavity inner wire offers groove, in groove, is provided with multiple intra vane; The madial wall of output cavity urceolus is provided with multiple outer leafs.
Preferred as this programme: the quantity of intra vane is equal with the quantity of outer leafs.
Preferred as this programme: the position of intra vane and the position of outer leafs one_to_one corresponding in axial coordinate.
Preferred as this programme: the radius gradual change successively of intra vane, the diameter the closer to the intra vane exporting side, gap is less.
Preferred as this programme: the radius gradual change successively of outer leafs, the diameter the closer to the outer leafs exporting side, gap is less, center bore is larger.
Preferred as this programme: outer support ring includes two concentric circless and along the circumferential direction equally distributed six support bars; The external diameter of the internal diameter of outer support ring and the nose cone of output cavity inner wire matches; The external diameter of outer support ring and the internal diameter of output cavity urceolus match.
Preferred as this programme: inside support ring includes two concentric circless and along the circumferential direction equally distributed ten support bars; The external diameter of inside support ring and the internal diameter of nose cone match; The internal diameter of inside support ring and the external diameter of output cavity inner wire match.
Preferred as this programme: the external diameter of coupling loop and thickness can regulate.
Preferred as this programme: the number of intra vane and outer leafs is 2 to 10.
Operation principle of the present invention is: under the effect in axial lead magnetic field, electron beam through prime input cavity and intermediate cavity modulation passes through output cavity gap, the electromagnetic field of mode of operation has been encouraged in output cavity, electron beam and field interactions, the power conversion of electron beam is the energy of field, produces High-Power Microwave.High-Power Microwave is transferred to the radiating antenna of coaxial line and rear end by extraction gap and coupling loop.
The beneficial effect of this programme can be learnt according to describing of such scheme, owing to adding output cavity inner wire in this scenario in output cavity, electronics and microwave action region output cavity inner wire and output cavity urceolus are provided with the blade of radius gradual change, electronics and microwave action region are divided into the structure in multiple gap, increase the length of microwave and electron beam interaction area, the electric field strength of output cavity can be reduced, avoid electric field breakdown, and radius gradual change blade construction changes the field distribution of microwave and electron beam interaction area, the extraction and the microwave that are conducive to electron beam energy are outwards propagated, and then improve the energy conversion efficiency of output cavity.Come regulation output chamber by annular coupling loop simultaneously
qvalue, is conducive to the generation reducing angle non-uniform pattern, thus suppresses assorted interference frequently.
As can be seen here, the present invention compared with prior art, has outstanding substantive distinguishing features and progress significantly, and its beneficial effect implemented also is apparent.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of the A-A section of Fig. 1 China and foreign countries support ring.
Fig. 3 is the structural representation of the B-B section of inside support ring in Fig. 1.
In figure, 1 is output cavity inner wire, and 2 is output cavity urceolus, and 3 is outer leafs, and 4 is outer leafs, and 5 is nose cone, 6 is outer support ring, and 7 is coupling loop, and 8 is collector, and 9 is inside support ring, and 10 is intra vane, 11 is intra vane, and 13 is support bar, and 16 is support bar, and 18 is outer leafs, and 19 is intra vane.
Embodiment
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
In Fig. 1 ~ Fig. 3, relativistic klystron amplifier output cavity of the present invention, comprise three outer leafs (3,4,18), nose cone 5, outer support ring 6, collector 8, coupling loop 7, inside support ring 9 that output cavity inner wire 1, three intra vanes (10,11,19) that output cavity inner wire is arranged, output cavity urceolus 2 are arranged, outer support ring 6 includes two concentric circless and along the circumferential direction equally distributed six support bars 13, and inside support ring 9 includes two concentric circless and along the circumferential direction equally distributed ten support bars 16.
Its annexation is, the groove of output cavity inner wire 1 outer wall is provided with three intra vanes (10,11,19), the outer radius of intra vane 11 is greater than intra vane 10, and the outer radius of intra vane 10 is greater than intra vane 19; Output cavity urceolus 2 is provided with three outer leafs (3,4,18), the centre bore radius of outer leafs 3 is less than outer leafs 4, the centre bore radius of outer leafs 4 is less than outer leafs 18, outer leafs 3 is corresponding in axial coordinate with intra vane 11, outer leafs 4 is corresponding in axial coordinate with intra vane 10, and outer leafs 18 is corresponding in axial coordinate with intra vane 19; Nose cone 5 is provided with coupling loop 7, nose cone 5 is fixed in output cavity urceolus 2 by outer support ring 6, and the internal diameter of outer support ring 6 mates with nose cone 5 external diameter, and the external diameter of outer support ring 6 mates with the internal diameter of output cavity urceolus 2.
Output cavity inner wire 1 right-hand member is provided with collector 8, and output cavity inner wire 1 is connected by inside support ring 9 with nose cone 5, and the internal diameter of inside support ring 9 mates with output cavity inner wire 1 external diameter, and the external diameter of inside support ring 9 mates with the internal diameter of nose cone 5.
The course of work of relativistic klystron amplifier output cavity of the present invention is, the electron beam of modulation is under the guiding of axial magnetic field, during by output cavity, the electromagnetic field of mode of operation has been encouraged in output cavity, electron beam and field interactions, the power conversion of electron beam is the energy of field, produces High-Power Microwave.
Electronics and microwave action region output cavity inner wire and output cavity urceolus are provided with the blade of radius gradual change, electronics and microwave action region are divided into the structure in multiple gap, increase the length of microwave and electron beam interaction area, the electric field strength of output cavity can be reduced, avoid electric field breakdown, and radius gradual change blade construction changes the field distribution of microwave and electron beam interaction area, the extraction and the microwave that are conducive to electron beam energy are outwards propagated, and then improve the energy conversion efficiency of output cavity.Come regulation output chamber by annular coupling loop simultaneously
qvalue, is conducive to the generation reducing angle non-uniform pattern, thus suppresses assorted interference frequently.
In PIC simulation, when operating frequency is 9.375GHz, when axial lead magnetic flux density is 0.8T, input electron-beam voltage is 600kV, and line is 5kA, when the first-harmonic beam current modulation degree of depth is 90%, it is 1.2GW that output cavity exports microwave power, and power conversion efficiency is 40%.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (9)
1. a relativistic klystron amplifier output cavity, is characterized in that: include output cavity urceolus, output cavity inner wire, nose cone, collector, coupling loop, outer support ring and inside support ring; Described output cavity inner wire is provided with collector near the one end exporting gap; The lateral wall of described collector is provided with nose cone; Described nose cone is provided with coupling loop; Inside support ring is provided with between described nose cone and output cavity inner wire; Outer support ring is provided with between described nose cone and output cavity urceolus; Described output cavity inner wire offers groove, in groove, is provided with multiple intra vane; The madial wall of described output cavity urceolus is provided with multiple outer leafs.
2. a kind of relativistic klystron amplifier output cavity according to claim 1, is characterized in that: the quantity of described intra vane is equal with the quantity of outer leafs.
3. a kind of relativistic klystron amplifier output cavity according to claim 1, is characterized in that: the position of described intra vane and the position of outer leafs one_to_one corresponding in axial coordinate.
4. a kind of relativistic klystron amplifier output cavity according to claim 1, is characterized in that: the radius gradual change successively of described intra vane, and the diameter the closer to the intra vane exporting side, gap is less.
5. a kind of relativistic klystron amplifier output cavity according to claim 1, is characterized in that: the radius gradual change successively of described outer leafs, and the diameter the closer to the outer leafs exporting side, gap is less, center bore is larger.
6. a kind of relativistic klystron amplifier output cavity according to claim 1, is characterized in that: described outer support ring includes two concentric circless and along the circumferential direction equally distributed six support bars; The external diameter of the internal diameter of described outer support ring and the nose cone of output cavity inner wire matches; The external diameter of described outer support ring and the internal diameter of output cavity urceolus match.
7. a kind of relativistic klystron amplifier output cavity according to claim 1, is characterized in that: described inside support ring includes two concentric circless and along the circumferential direction equally distributed ten support bars; The external diameter of described inside support ring and the internal diameter of nose cone match; The internal diameter of described inside support ring and the external diameter of output cavity inner wire match.
8. a kind of relativistic klystron amplifier output cavity according to claim 1, is characterized in that: the external diameter of described coupling loop and thickness can regulate.
9. a kind of relativistic klystron amplifier output cavity according to claim 1, is characterized in that: the number of described intra vane and outer leafs is 2 to 10.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106206219A (en) * | 2016-08-31 | 2016-12-07 | 中国工程物理研究院应用电子学研究所 | A kind of tunable klystron amplifier output cavity |
| CN106653525A (en) * | 2017-01-16 | 2017-05-10 | 中国人民解放军国防科学技术大学 | Millimeter waveband transition time oscillator based on high order mode working mechanism |
| CN111060912A (en) * | 2019-12-26 | 2020-04-24 | 成都信息工程大学 | Method for simulating weather radar klystron |
| CN112578426A (en) * | 2020-11-26 | 2021-03-30 | 中国工程物理研究院应用电子学研究所 | Adjustable array Faraday cylinder |
| CN113764242A (en) * | 2021-07-30 | 2021-12-07 | 中国工程物理研究院应用电子学研究所 | Conformal input coupling miniaturized relativistic klystron amplifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106206219A (en) * | 2016-08-31 | 2016-12-07 | 中国工程物理研究院应用电子学研究所 | A kind of tunable klystron amplifier output cavity |
| CN106206219B (en) * | 2016-08-31 | 2018-07-20 | 中国工程物理研究院应用电子学研究所 | A kind of tunable klystron amplifier output cavity |
| CN106653525A (en) * | 2017-01-16 | 2017-05-10 | 中国人民解放军国防科学技术大学 | Millimeter waveband transition time oscillator based on high order mode working mechanism |
| CN106653525B (en) * | 2017-01-16 | 2018-01-30 | 中国人民解放军国防科学技术大学 | Millimere-wave band transit-time oscillator based on higher modes working mechanism |
| CN111060912A (en) * | 2019-12-26 | 2020-04-24 | 成都信息工程大学 | Method for simulating weather radar klystron |
| CN112578426A (en) * | 2020-11-26 | 2021-03-30 | 中国工程物理研究院应用电子学研究所 | Adjustable array Faraday cylinder |
| CN113764242A (en) * | 2021-07-30 | 2021-12-07 | 中国工程物理研究院应用电子学研究所 | Conformal input coupling miniaturized relativistic klystron amplifier |
| CN113764242B (en) * | 2021-07-30 | 2023-06-20 | 中国工程物理研究院应用电子学研究所 | Conformal input coupling miniaturized relativistic klystron amplifier |
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