CN113130277B - Collector assembly and klystron permanent magnet focusing system - Google Patents
Collector assembly and klystron permanent magnet focusing system Download PDFInfo
- Publication number
- CN113130277B CN113130277B CN202110433124.9A CN202110433124A CN113130277B CN 113130277 B CN113130277 B CN 113130277B CN 202110433124 A CN202110433124 A CN 202110433124A CN 113130277 B CN113130277 B CN 113130277B
- Authority
- CN
- China
- Prior art keywords
- collector assembly
- body core
- collector
- sleeve
- extension
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010894 electron beam technology Methods 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000002826 coolant Substances 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 15
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 8
- 238000002679 ablation Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/027—Collectors
- H01J23/033—Collector cooling devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
- H01J25/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
- H01J25/16—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator with pencil-like electron stream perpendicular to the axis of the resonators
Landscapes
- Microwave Tubes (AREA)
Abstract
The present disclosure provides a collector assembly comprising: a body core segment comprising: the cylindrical shell and the conical closing-in are integrally formed, and the conical closing-in is used for diverging the electron beam; an extension coaxial with the body core segment, comprising: the locating hole is connected with the conical closing-in, and the locating hole and the conical closing-in form a channel, wherein the channel is used for passing the divergent electron beam to the extension section for secondary divergence. The disclosure also provides a klystron permanent magnet focusing system.
Description
Technical Field
The disclosure relates to the field of collector assembly tooling design, in particular to a collector assembly and a klystron permanent magnet focusing system.
Background
Along with the shortening of wavelength, the development of Ka-band (26.5 GHz-40 GHz) klystrons faces the technical problems of reduced component geometry, difficult heat dissipation balance, reduced power capacity, difficult component processing and the like, most of the international development of Ka-band klystrons is concentrated on pulse or continuous wave devices below a few kW, and the maximum peak power output of Ka-band Expansion Interaction Klystrons (EIKs) which are reported to be successfully developed is about 20kW at present. In recent years, related weather radar, material processing, deep space exploration, microwave weapon systems and metering technologies have placed new demands on Ka-band klystrons at 100kW and higher output power levels, and development of various components of Ka-band klystrons has thus faced new challenges.
The klystron is usually composed of electron gun, focusing system, high frequency circuit, energy transmission device, collector, and Ti pump. The collector component is used for collecting the electron beam which is scattered after interaction of the high-frequency circuit, converting kinetic energy of the electron beam into heat energy, and taking away the heat energy through an external cooling medium, and the structural form, the geometric dimension and the cooling mode of the collector component have important influences on performance indexes such as reliability, volume, quality and service life of the klystron.
In the Ka band, because the device is small and compact in size, the pi-type permanent magnet focusing system is a reasonable choice, and a focusing loop formed by double magnetic poles can generate a required main magnetic field in a high-frequency circuit area, and also has strong demagnetizing fields in an electron gun area and a collector area respectively, as shown in figure 1, the strength of the demagnetizing field can still reach 1/4 to 1/3 of the main magnetic field by designing a magnetic screen cylinder in the collector area to shield. The electron gun region can be designed and selected to be at a proper magnetic field strength position to avoid the influence of the demagnetizing field, but the demagnetizing field of the collector region cannot be completely eliminated, so that the divergence of the electron beam can be delayed, and even secondary focusing is caused, so that the energy density of the electron beam landed on the inner surface of the collector is increased, and the cooling and power bearing capacity of the collector are affected. On one hand, the design of the Ka band klystron collector shields part of the demagnetizing field by increasing the length of the collector magnetic shield cylinder, so that the strength of the demagnetizing field of the collector region is reduced to be within a proper range; on the other hand, the top end of the collector is properly prolonged to be similar to the length of the magnetic screen cylinder, the volume and the weight are not increased in a transitional way through compatibility, and the design and the installation of a water path and an interface of the collector are convenient (the space in the magnetic screen cylinder is narrow).
The collector in the prior art has the following technical defects:
1) Under the conditions that the output power of the Ka-band klystron is improved and the required main magnetic field is enhanced, the counter magnetic field of the collector area is difficult to shield to a low enough safety range by increasing the length of the collector magnetic screen cylinder, secondary focusing of electron beam still can occur in the collector, and material ablation or melting through can be caused, so that the structural power bearing capacity of the existing collector design is limited.
2) After the top end of the collector is prolonged, the divergence space of the electron beam is prolonged, electrons in the cylindrical electron beam, which are close to the central part, cannot be recovered in time, and the probability of secondary electrons and reflected electrons generated on the inner wall by striking under the action of a counter magnetic field is high, so that the klystron oscillation and the working instability caused by the returned electrons can be increased.
Disclosure of Invention
In order to solve the above-mentioned problem in the prior art, the present disclosure provides a collector assembly and a klystron permanent magnet focusing system, which makes most of electron beam evenly spread near the conical surface by arranging the conical surface mouth on the front half part of the cylindrical inner wall of the collector, so as to ensure that the high-energy electrons with few electron beam centers pass through and not land the energy density is concentrated at the place, and avoid the problem of material ablation or melting through.
One aspect of the present disclosure provides a collector assembly comprising: a body core segment comprising: the cylindrical shell and the conical closing-in are integrally formed, and the conical closing-in is used for diverging the electron beam; an extension coaxial with the body core segment, comprising: the locating hole is connected with the conical closing-in, and the locating hole and the conical closing-in form a channel, wherein the channel is used for passing the divergent electron beam to the extension section for secondary divergence.
Further, the collector assembly further comprises: the water sleeve is sleeved on the outer sides of the body core section and the extension section, and forms a cavity with the outer sides of the body core section and the extension section, and the cavity is used for injecting cooling medium to cool the body core section and the extension section.
Further, the water sleeve includes: the inner sleeve and the outer sleeve are coaxially arranged, a first cavity is formed between the inner sleeve and the outer sides of the body core section and between the inner sleeve and the outer side of the extension section, and a second cavity is formed between the outer sleeve and the outer side of the inner sleeve.
Further, a plurality of grooves are formed in the outer side of the body core section, and a plurality of cooling channels are formed between the grooves and the water sleeve.
Further, the conical closing-in and the positioning hole are hermetically welded through a solder groove sleeve.
Further, the water sleeve is a cylindrical thin barrel with double-layer metal smooth surfaces.
Further, at least one inner cylinder through hole is formed in the wall of the inner sleeve, and at least two outer cylinder through holes are formed in the wall of the outer sleeve.
Further, the inner cylinder through hole and one end of the outer cylinder through hole are both provided with waterway interfaces.
Further, the length of the body core segment is different from the length of the extension segment.
Another aspect of the present disclosure provides a klystron permanent magnet focusing system comprising: the collector assembly as provided in the first aspect of the present disclosure.
The utility model provides a collector subassembly, klystron permanent magnetism focusing system ensures through the reasonable setting of collector body core section conical surface binding off that the electron beam is fully dispersed, and the extension section cooperation alleviates the landing of the near high-energy electron of electron beam axis and concentrate, has reduced the adverse effect of secondary electron and reflection electron simultaneously. The collector magnetic shield tube can meet the requirement on the total length of the collector assembly under the condition of prolonging the collector magnetic shield tube, can realize divergent electron beam and timely and effectively intercept and fully cool the collector assembly to the greatest extent, effectively reduces the risks of local overheating, ablation and even penetration possibly caused by secondary focusing of the electron beam under the condition of over-high magnetic field of the collector assembly in the prior art, promotes the bearing power level of the collector assembly, and ensures the working stability of the klystron.
Drawings
For a more complete understanding of the present disclosure and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which:
FIG. 1 schematically shows an axial magnetic field distribution curve diagram of a Ka-band 100kW pulse klystron permanent magnet focusing system;
FIG. 2 schematically shows an electron-optical trace diagram of a Ka-band 100kW pulse klystron permanent magnet focusing system under collector conditions in the prior art;
FIG. 3 schematically illustrates a collector assembly configuration of an embodiment of the present disclosure;
FIG. 4 schematically illustrates a cross-sectional view of a body core segment of an embodiment of the present disclosure;
FIG. 5 schematically illustrates a schematic view of a body core segment from the A-A direction of an embodiment of the present disclosure;
FIG. 6 schematically illustrates a cross-sectional view of an extension of an embodiment of the present disclosure;
FIG. 7 schematically illustrates a schematic view of an extension segment from the B-B direction of an embodiment of the present disclosure;
FIG. 8 schematically illustrates a cross-sectional view of a water sleeve in a collector assembly of an embodiment of the present disclosure;
fig. 9 schematically illustrates a cross-sectional view of a klystron permanent magnet focusing system of an embodiment of the present disclosure;
fig. 10 schematically illustrates an electron optical trace diagram of a Ka band 100kW pulse klystron permanent magnet focusing system under collector assembly conditions of an embodiment of the disclosure.
Detailed Description
Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is only exemplary and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the concepts of the present disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and/or the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It should be noted that the terms used herein should be construed to have meanings consistent with the context of the present specification and should not be construed in an idealized or overly formal manner.
Fig. 1 schematically shows an axial magnetic field distribution curve diagram of a Ka-band 100kW pulse klystron permanent magnet focusing system. As shown in fig. 1, the focusing system generates a main magnetic field of up to 9100 gauss in a high-frequency circuit area, and also brings a strong demagnetizing field in a collector area, and the strength of the demagnetizing field is up to 1500 gauss after the shielding of a collector magnetic screen with a design length of 117 mm.
Fig. 2 schematically shows an electron optical trace diagram of a Ka-band 100kW pulse klystron permanent magnet focusing system under the collector condition in the prior art, and numerical simulation calculation shows that a high-current density electron beam emitted from a cathode passes through a high-frequency circuit area under the action of a main magnetic field and is subjected to the action of a stronger collector counter magnetic field, the uniformly-dispersed electron beam is subjected to secondary focusing at a position 104mm away from the cathode in the existing collector, only a small part of electrons strike on the inner wall of the collector after secondary focusing, a plurality of electrons are dispersed after lagging, and the electrons strike at the tail end of the collector in a concentrated manner, so that the electron landing energy density is increased, the ablation and penetration of a collector material are caused, and the cooling and power bearing capacity of the collector are reduced.
The collector assembly effectively overcomes the influence of a counter magnetic field of a collector on the electron beam divergence process, secondary focusing of the electron beam is avoided, the power capacity of an existing Ka-band collector is improved, most of the electron beam is evenly diverged near a conical surface by arranging the conical surface closing-in on the front half part of the cylindrical inner wall of the collector, a small-section space communication area is formed between the conical surface and the rear half part of the collector, so that the situation that few high-energy electrons in the center of the electron beam pass through the conical surface to avoid landing energy density concentration at the position, material ablation or melting penetration is caused, the rear half part of the collector is restored to the original diameter of the inner wall of the collector, sufficient divergence space is provided for electrons passing through the position on one hand, the weight of the collector is lightened, and the cooling efficiency is improved on the other hand. The collector waterway is designed into a smooth double-layer water jacket and groove type cooling surface structure so as to improve the power dissipation bearing density of unit area and adapt to the use requirement of the Ka band high-power klystron.
Fig. 3 schematically illustrates a collector assembly structure schematic of an embodiment of the present disclosure.
As shown in fig. 3, the collector assembly 100 includes a body core segment 1, an extension segment 2, and a water sleeve 3.
A body core segment 1 comprising: the cylindrical shell 11 and the conical closing-in 12 are integrally formed, and the conical closing-in 12 is used for diverging the electron beam.
According to the embodiment of the disclosure, as shown in fig. 4, a transverse cross-section of a body core section 1 is shown, the body core section 1 is in a vertically central symmetry structure, 16 is the inner wall of the body core section, wherein, a cylinder 11 is a cylinder with a certain thickness, a plurality of axisymmetric grooves 13 which are axially and uniformly distributed are arranged at the outer side of the cylinder, the tail ends of the plurality of grooves 13 are completely communicated, the diameter of a small section cylindrical channel 14 at the tail end of a tapered closing-in 12 is not too small or too large, if too small, the effect of relieving the concentration of landing energy density of an electron beam at the place is not achieved, if too large, excessive electrons possibly leak to enable the electrons to pass through to reach an extension section 2 to perform secondary focusing, and the effect of the tapered closing-in 12 in the body core section 1 is weakened, so that the diameter and the length of the channel are optimally designed.
In the embodiments of the present disclosure, the inner length of the core segment is 50.3mm, the inner diameter of the cylinder 11 is preferably 18mm, and the maximum outer diameter is 28.2mm (-0.1 mm tolerance for fitting welding with the outer barrel of the water sleeve 3); the diameter of the plurality of grooves 13 is 24mm (-0.1 mm tolerance so as to be assembled and welded with the inner cylinder of the water sleeve 3), the ends of the grooves 13 are completely communicated, and the inner diameter of the cylinder at the completely communicated position is slightly contracted to 16mm in consideration of water flow and cooling effect; the cone inclination angle of the conical closing-in 12 is preferably a cone of 45 DEG, the height of the cone is 9mm (i.e. half of the inner diameter of the cylinder 11); the diameter of the small cylindrical channel 14 at the end of the conical mouth 12 is preferably 2mm and the length is preferably 8.3mm. The channel end communication section 15 is used for circulation of the cooling medium, and can be directly injected into the plurality of channels 13.
Fig. 5 shows a schematic view of the body core section from the direction A-A in fig. 4, and fig. 5 shows that each component structure of the body core section 1 is a coaxial cylindrical structure, which is in an axisymmetric structure, and the passage opening of the small cylindrical passage 14 at the tail end of the tapered closing-in 12 is located at the right center of the body core section 1.
In the embodiment of the disclosure, the distribution of the electron beam track in the collector region is calculated according to the predetermined collector demagnetizing field condition, the length of the cylindrical barrel of the core section 1 and the length of the tapered surface closing-in are determined by observing and judging the distance range and the dropping point of secondary focusing of the electron beam, so that most of the electron beam is timely intercepted by the cylindrical barrel and the tapered surface inner wall before the track is twisted as far as possible (so as to reduce landing energy density), and the diameters of the cylindrical barrel and the tapered surface closing-in are comprehensively balanced and judged according to factors such as the electron beam power level of a klystron, the allowable dissipation power density of a barrel wall material, the cooling liquid flow rate, the limitation of the inner diameter of a magnetic screen barrel and the like.
An extension 2 coaxial with the body core segment 1, comprising: the locating hole 21, the locating hole 21 with the toper binding off 12 is connected, the locating hole 21 with toper binding off 12 department forms the passageway, wherein, the passageway is used for the electron beam after dispersing to pass to extension 2 carries out the secondary and diverges.
According to an embodiment of the present disclosure, as shown in fig. 6, the extension section 2 includes: positioning holes 21, an inner wall 22 of the extension section, fixing positions 23 of the inner cylinder of the water sleeve and an outer profile surface 24 of the extension section. The locating hole 21 of the extension section 2 is matched with the conical closing-in 12 of the body core section 1 and is welded by 2 solder groove sleeves, the main body structure of the extension section 2 is also cylindrical, wherein the extension section outline surface 24 is communicated with the surface groove of the body core section 1, the water resistance is smaller, and the water resistance just corresponds to the cylindrical channel 14 between the body core section 1 and the extension section 2, so that a better cooling effect can be realized. The length of the extension 2 is designed to be slightly longer at its end than the end of the collector magnetic shield. As shown in fig. 7, which is a schematic view of the extension section 2 from the direction B-B in fig. 6, it can be seen that the extension section 2 has a coaxial cylindrical structure, which has an axisymmetric structure. In the embodiments of the present disclosure, the effect of the extension 2 is to provide sufficient divergent space for small amounts of electrons passing therethrough on the one hand, and to reduce collector weight and improve cooling efficiency on the other hand.
According to the embodiment of the disclosure, the outer diameter of the extension section 2 is the same as the inner diameter of the cylindrical barrel 11 in the body core section 1, the outer wall of the extension section is thinner, and the extension section 2 has the functions of providing sufficient dispersing space and heat dissipation and cooling area for electrons passing through the extension section on one hand, and reducing the weight of a collector and improving the cooling efficiency on the other hand. Since most of the electron beam is captured by the body core section 1, the cooling pressure is small, so the length of the extension section 2 is not strictly limited, and the end of the extension section is ensured to be slightly longer than the end of the collector magnetic screen cylinder so as to facilitate design of the cooling medium interface.
In the embodiment of the disclosure, the maximum inner diameter of the extension 2 is preferably 18mm, the wall thickness is 2mm, the maximum outer diameter is 28.2mm (-0.1 mm tolerance for fitting welding with the inner barrel of the water sleeve 3), the length is preferably 95.4mm, and its end is slightly longer than the end of the collector magnetic shield by 18mm.
And the water sleeve 3 is sleeved on the outer sides of the body core section 1 and the extension section 2, and forms a cavity with the outer sides of the body core section 1 and the extension section 2, and the cavity is used for injecting cooling medium to cool the body core section 1 and the extension section 2.
According to the embodiment of the disclosure, as shown in fig. 8, the water sleeve 3 includes an inner sleeve 31, an outer sleeve 32, an inner sleeve through hole 33, an outer sleeve through hole 34, an outer sleeve through hole 35, and a cooling medium interface 36, wherein the inner sleeve 31 is coaxial with the outer sleeve 32 and is a cylindrical thin metal-polished cylinder, the inner sleeve 31 forms a first cavity with the outer sides of the body core section 1 and the extension section 2, the outer sleeve 32 forms a second cavity with the outer sides of the inner sleeve 31, and the first cavity and the second cavity are used for forming a flow channel of the cooling medium so that the cooling medium cools the body core section 1, the extension section 2, and the electron beam in the body core section 1/the extension section 2. In the embodiment of the present disclosure, the cooling medium input into the first cavity and the second cavity may be cooling water or cooling medium, which is not limited in the present disclosure.
Specifically, the inner diameter of the inner sleeve 31 is equal to the outer diameter of the axisymmetric vertical groove of the body core section 1, one end of the inner sleeve 31 is fixed on the extension section 2, and the wall of the inner sleeve 31 is provided with an inner sleeve through hole 33; the inner diameter of the outer sleeve 32 is slightly larger than the outer diameter of the inner sleeve 31, one end of the outer sleeve 32 is fixed at the bottom of the core section 1, and two symmetrical outer cylinder through holes 34/35 are formed in the wall of the outer sleeve 32, wherein the inner cylinder through holes 33 and the outer cylinder through holes 34 ensure coaxial centers to penetrate through a cooling medium passage during assembly. The water jacket 3 comprises at least two coolant connections 36, the installation of which is shown in fig. 8, the coolant connections 36 being arranged in connection with the inner jacket bore 33 for supplying coolant and the coolant connections 36 being arranged in connection with the outer jacket bore 35 for supplying coolant.
In the embodiment of the present disclosure, the wall thickness of the inner sleeve 31 and the outer sleeve 32 is 1mm, wherein the inner diameter of the inner sleeve 31 is 24mm (+0.1 mm tolerance for fitting welding with the outer diameter of the axially symmetric vertical groove of the body core segment 1), the inner diameter of the outer sleeve 32 is 28.2mm (+0.1 mm tolerance for fitting welding with the maximum outer diameters of the body core segment 1 and the extension segment 2), and the inner diameter of the cooling medium connection 36 is preferably 6.5mm.
The utility model provides a collector subassembly ensures through the reasonable setting of collector body core section conical surface binding off that the electron is annotated and is dispersed fully, and the extension cooperation alleviates the landing of the nearby high-energy electron of electron annotating the axis and concentrate, has reduced the adverse effect of secondary electron and reflection electron simultaneously. The collector magnetic shield tube can meet the requirement on the total length of the collector assembly under the condition of prolonging the collector magnetic shield tube, can realize divergent electron beam and timely and effectively intercept and fully cool the collector assembly to the greatest extent, effectively reduces the risks of local overheating, ablation and even penetration possibly caused by secondary focusing of the electron beam under the condition of over-high magnetic field of the collector assembly in the prior art, promotes the bearing power level of the collector assembly, and ensures the working stability of the klystron.
It should be noted that the foregoing configurations and dimensions of the components are merely exemplary, and are not meant to be an alternative to the configurations and dimensions of the components in other practical applications, and are not intended to limit the configurations and dimensions of the collector assemblies provided in the present disclosure.
Fig. 9 schematically illustrates a cross-sectional view of a klystron permanent magnet focusing system of an embodiment of the present disclosure.
As shown in fig. 9, an embodiment of the present disclosure further provides a klystron permanent magnet focusing system, the klystron permanent magnet focusing system comprising: the collector assembly 100, the outer magnetic shield 200, the radial magnetized permanent magnet (positive pole) 310, the radial magnetized permanent magnet (negative pole) 320, the electron gun magnetic shield 400, and the extended collector magnetic shield cylinder 500 shown in the above embodiments. The collector assembly 100 is disposed in the extended collector magnetic shield 500, and the cooling medium port 36 on the water sleeve 3 is disposed outside the extended collector magnetic shield 500, that is, the overall lateral length of the body core section 1 and the extension section 2 in the collector assembly 100 is greater than the lateral length of the extended collector magnetic shield 500, so that the cooling medium port 36 can be conveniently installed.
According to the embodiment of the disclosure, as shown in fig. 10, the result of performing numerical simulation calculation on the Ka-band 100kW pulse klystron has the effect that the body core section 1 intercepts the electron beam in advance, only a small number of electrons can reach the extension section 2, and the high-speed double-layer water cooling structure (i.e., the water sleeve 3) is matched, so that timely interception and full cooling of the divergent electron beam can be realized to the greatest extent, the risks of local overheating, ablation and even penetration possibly caused by secondary focusing of the electron beam under the condition of overhigh magnetic field of the existing collector component are effectively reduced, and the bearing power magnitude of the collector component is improved. The klystron thermal test shows that under the condition of passing 10L/min water flow, the collector assembly can ensure that the Ka-band 100kW pulse klystron works stably.
It should be noted that the above definition of the components and the preferred design method in the collector assembly is not limited to the Ka-band 100kW pulse klystron, and those skilled in the art can apply the same to other high-power millimeter wave-submillimeter wave microwave devices with higher band and possibly risk of secondary electron focusing through an equal scale.
While the disclosure has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive in character, and as shown in FIG. 1 is schematically depicted a collector assembly in accordance with embodiments of the disclosure in which certain components may be replaced by other components of the same or similar function or in which the construction of the experimental principles set is further simplified or complicated during actual use, and such embodiments do not constitute limitations of the collector assembly.
Those skilled in the art will appreciate that the features recited in the various embodiments of the disclosure and/or the claims can be combined in a wide variety of combinations and/or combinations even if such combinations or combinations are not explicitly recited in the disclosure. In particular, the features recited in the various embodiments of the present disclosure and/or the claims may be variously combined and/or combined without departing from the spirit and teachings of the present disclosure. All such combinations and/or combinations fall within the scope of the present disclosure.
While the present disclosure has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. The scope of the disclosure should, therefore, not be limited to the above-described embodiments, but should be determined not only by the following claims, but also by the equivalents of the following claims.
Claims (10)
1. A collector assembly, comprising:
-a body core segment (1) comprising: the electronic beam nozzle comprises a cylindrical barrel (11) and a conical closing-up (12), wherein the cylindrical barrel and the conical closing-up are integrally formed, and the conical closing-up (12) is used for diverging an electronic beam;
-an extension (2) coaxial with the body core section (1), comprising: the locating hole (21), locating hole (21) with toper binding off (12) are connected, locating hole (21) with toper binding off (12) department forms the passageway, wherein, the passageway is used for the electron beam after dispersing to pass to extension (2) carries out the secondary and diverges.
2. The collector assembly of claim 1, further comprising:
the water sleeve (3) is sleeved on the outer sides of the body core section (1) and the extension section (2), and forms a cavity with the outer sides of the body core section (1) and the extension section (2), and the cavity is used for injecting cooling medium to cool the body core section (1) and the extension section (2).
3. Collector assembly according to claim 2, wherein the water sleeve (3) comprises: the inner sleeve (31) and the outer sleeve (32) are coaxially arranged, a first cavity is formed between the inner sleeve (31) and the outer sides of the body core section (1) and the extension section (2), and a second cavity is formed between the outer sleeve (32) and the outer side of the inner sleeve (31).
4. Collector assembly according to claim 2, wherein a plurality of grooves (13) are provided outside the body core section (1), wherein a plurality of cooling channels are formed between the grooves (13) and the water sleeve (3).
5. Collector assembly according to claim 1, wherein the conical constriction (12) is sealed and welded with the positioning hole (21) by means of a solder bath sleeve.
6. A collector assembly according to claim 3, wherein the water sleeve (3) is a double-layer metallic plain cylindrical thin tube.
7. Collector assembly according to claim 6, wherein at least one inner cylinder through hole (33) is provided in the cylinder wall of the inner sleeve (31) and at least two outer cylinder through holes (34, 35) are provided in the cylinder wall of the outer sleeve (32).
8. Collector assembly according to claim 7, wherein the inner cylinder through hole (33) and the outer cylinder through hole (35) are provided with a cooling medium interface (36) at one end.
9. Collector assembly according to claim 2, wherein the length of the body core segment (1) is different from the length of the extension segment (2).
10. A klystron permanent magnet focusing system, characterized in that it comprises a collector assembly according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110433124.9A CN113130277B (en) | 2021-04-21 | 2021-04-21 | Collector assembly and klystron permanent magnet focusing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110433124.9A CN113130277B (en) | 2021-04-21 | 2021-04-21 | Collector assembly and klystron permanent magnet focusing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113130277A CN113130277A (en) | 2021-07-16 |
| CN113130277B true CN113130277B (en) | 2024-02-13 |
Family
ID=76778801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110433124.9A Active CN113130277B (en) | 2021-04-21 | 2021-04-21 | Collector assembly and klystron permanent magnet focusing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113130277B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3299311A (en) * | 1962-05-09 | 1967-01-17 | Siemens Ag | Velocity modulated electron tube with integrated focusing and getter pump systems, the pump having multiple getter-coated electrodes |
| CA2100931A1 (en) * | 1992-07-21 | 1994-01-22 | Richard B. True | Collector ion expeller |
| CN103996587A (en) * | 2014-05-09 | 2014-08-20 | 成都国光电气股份有限公司 | Liquid-cooling collector structure of travelling wave tube |
| CN109285751A (en) * | 2017-07-19 | 2019-01-29 | 刘梅 | A kind of Multistage depressed collector for ribbon electronic beam traveling wave tubes |
| CN109860003A (en) * | 2018-12-29 | 2019-06-07 | 中国电子科技集团公司第十二研究所 | A kind of multistage depressed collector for traveling-wave tube |
-
2021
- 2021-04-21 CN CN202110433124.9A patent/CN113130277B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3299311A (en) * | 1962-05-09 | 1967-01-17 | Siemens Ag | Velocity modulated electron tube with integrated focusing and getter pump systems, the pump having multiple getter-coated electrodes |
| CA2100931A1 (en) * | 1992-07-21 | 1994-01-22 | Richard B. True | Collector ion expeller |
| US5389854A (en) * | 1992-07-21 | 1995-02-14 | Litton Systems, Inc. | Collector ion expeller |
| CN103996587A (en) * | 2014-05-09 | 2014-08-20 | 成都国光电气股份有限公司 | Liquid-cooling collector structure of travelling wave tube |
| CN109285751A (en) * | 2017-07-19 | 2019-01-29 | 刘梅 | A kind of Multistage depressed collector for ribbon electronic beam traveling wave tubes |
| CN109860003A (en) * | 2018-12-29 | 2019-06-07 | 中国电子科技集团公司第十二研究所 | A kind of multistage depressed collector for traveling-wave tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113130277A (en) | 2021-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106253031B (en) | Submicrosecond grade long pulse high efficiency the theory of relativity Cherenkov's oscillator | |
| US9583301B2 (en) | Metamaterial high-power microwave source | |
| US11961692B2 (en) | Bi-metallic anode for amplitude modulated magnetron | |
| US20080129203A1 (en) | Method and apparatus for radio frequency cavity | |
| WO2015142414A1 (en) | Compact magnet design for high-power magnetrons | |
| CN113130277B (en) | Collector assembly and klystron permanent magnet focusing system | |
| CN114023617A (en) | Annular multi-electron-beam radiation source based on cold cathode | |
| CN107946156A (en) | Electronic collector of coaxial transit time oscillator capable of working in long pulse state | |
| US7394201B2 (en) | Field emission cathode gating for RF electron guns and planar focusing cathodes | |
| US3317780A (en) | Traveling wave tube apparatus | |
| CN101728182A (en) | Structure of electron gun for generating elliptical ribbon-like electron beams | |
| CN102737927A (en) | Double electron beam electron gun and gyrotron | |
| CN110600352B (en) | Electron optical system suitable for ribbon beam traveling wave tube | |
| US6025678A (en) | Linear-beam microwave tube with output cavity beyond the collector | |
| CN111769023B (en) | W-band continuous wave traveling wave tube | |
| CN109755084B (en) | X-waveband dual-mode multi-injection klystron | |
| EP1522084B1 (en) | Method and apparatus for magnetic focusing of off-axis electron beam | |
| CN109148242B (en) | Electromagnetic wave oscillator | |
| CN109786191B (en) | Asymmetric output cavity structure of klystron | |
| CN113130276A (en) | Multistage depressed collector | |
| CN113658838B (en) | High-frequency interaction circuit and preparation method thereof | |
| Belomestnykh et al. | Deflecting cavity for beam diagnostics in ERL injector | |
| CN112038208B (en) | Ka-band coaxial transit time oscillator with trapezoidal structure | |
| CN116344295A (en) | High-power klystron collector and preparation method thereof | |
| RU2804521C1 (en) | Multibeam klystron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |