CN102403179A - Structure of high-power strip beam electron gun with rectangular section - Google Patents
Structure of high-power strip beam electron gun with rectangular section Download PDFInfo
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- CN102403179A CN102403179A CN2010102841893A CN201010284189A CN102403179A CN 102403179 A CN102403179 A CN 102403179A CN 2010102841893 A CN2010102841893 A CN 2010102841893A CN 201010284189 A CN201010284189 A CN 201010284189A CN 102403179 A CN102403179 A CN 102403179A
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Abstract
The invention discloses a structure of a high-power strip beam electron gun with a rectangular section and relates to a vacuum electronic device technology. A cathode is a rectangular cylinder structure; a focusing electrode is a square frame-shaped structure spliced by two focusing planes with a certain inclination angles in the transverse direction; an anode is a structure with a hollow passage with a certain taper; an anode head is fixedly arranged at the center of a bottom surface inside an anode supporting barrel; the periphery of the rectangular cylinder cathode is matched with the hollow square frame at the bottom of the focusing electrode; the cathode and the focusing electrode are positioned in the anode supporting barrel; two symmetrical planes of the focusing electrode are parallel to two symmetrical planes of the anode and the central axes of the focusing electrode nd the anode are coincident; and a certain distance is formed between the focusing electrode and the anode. The electron gun disclosed by the invention has a direct current power of about 15MW, specification of 50mm*4mm of an electron beam section and compression ratio of 5:1 in the narrow edge direction and has excellent fluidity of an beam inner layer at the position of a beam waist. The generation problem of a strip electron beam is solved. The high-power strip beam electron gun with the rectangular section can be used in a high-power strip beam device and can be matched with a focusing system to realize long-distance stable transmission.
Description
Technical field
The present invention relates to microwave electron tube technical field, is a kind of structure that can produce the high power electronic rifle of square-section ribbon-like electron notes.
Background technology
Along with science and technology development; In applications such as high power radar, directional energy microwave weapon and high energy acclerator; New device to can the output high-power microwave has proposed urgent day by day demand, and wherein ribbon beam klystron or travelling wave tube are the candidates that has potentiality for these.Use in the circular single notes of annotating and multiple-beam klystron in tradition, space-charge force is the unfavorable factor that the restriction power output further improves all the time, shows even more seriously in this problem of high band.Just can know through simple calculating; Under the identical condition of total current; Ribbon-like electron is annotated because have bigger cross-sectional area thereby current density is minimized; Space-charge force in annotating significantly reduces, and the ability that ribbon-like electron is annotated transmission high current under the condition that keeps the small electric current density is its most significant advantage.In the ribbon beam device; Line is annotated the ripple mutual effect to accomplish the generation and the amplification of microwave energy at narrow edge direction and external high frequency structure; The line broadside then can select bigger yardstick to realize high power output; So, ribbon-like electron is annotated and has been taken into account device to high-frequency and high-power requirement.
The primary prerequisite that produces the ribbon beam device is to solve having problems of ribbon-like electron notes; Requirement to desirable ribbon beam electron gun is that the electronics that only target is launched on narrow edge direction compresses; On broadside, then only provide suitable focusing force to overcome space-charge force faint in the notes, in addition line is not had any influence.Thereby under the requirement of guaranteeing certain beam power, design that beam cross section meets the requirements and the rational electron gun of cathode load has bigger difficulty.The present invention is the structure of a kind of high power square-section ribbon beam electron gun, and the solution feasible to this problem is provided.
Summary of the invention
The objective of the invention is to propose the structure of a kind of high power square-section ribbon beam electron gun; Constitute by rectangle cylinder negative electrode, focusing electrode, anode and anode-supported tube; Can produce the square-section electronics that is of a size of 50mm * 4mm and annotate, the compression ratio of the narrow edge direction of electron gun is 5: 1, and direct current power can reach 15MW; The laminarity of annotating at the beam waist position electronics is good, thereby can realize long stable distance transmission with the focusing system coupling.
In order to achieve the above object, technical solution of the present invention narration as follows.
The structure of a kind of high power square-section ribbon beam electron gun; It comprises negative electrode, focusing electrode, anode and anode-supported bucket; This negative electrode, focusing electrode, anode and anode-supported tube are arranged on the same axis, and total is with respect to two coordinate plane symmetries crossing the axis; Wherein, negative electrode is the rectangle cylindrical structure, focuses on very square frame shape structure, and by on two transverse directions on wide, narrow both sides, the focussing plane that respectively has certain inclination angle is spliced; Anode is the structure with band tapering hollow channel, and anode head is fixedly arranged on anode-supported bucket inner bottom surface center; Rectangle cylinder negative electrode periphery matches with square frame shape focusing electrode bottom rectangle hollow square frame; Negative electrode and focusing electrode are positioned at the anode-supported tube; Two planes of symmetry of focusing electrode and the two axis parallel with two planes of symmetry of anode overlaps, and certain distance is arranged between focusing electrode and the anode.
Described electron gun structure, the cross section width edge length of its said rectangle cylinder negative electrode is 50mm, and narrow edge lengths is 20mm, and the radius of curvature of negative electrode cylinder is 34mm.
Described electron gun structure; The width edge length of the rectangular hollow square frame that its said focusing electrode cooperates with negative electrode is 54mm; Narrow edge lengths is 20.8mm, and the angle of the focussing plane of transverse direction and axis is 38 degree on narrow limit, is 74 degree at the focussing plane of broadside transverse direction and the angle of axis; Focussing plane on the transverse direction on wide, narrow both sides is 13.05mm along the distance that axis extends; Excessive for the yardstick of avoiding broadside transverse direction focussing plane, be the continuation extension on the symmetric position place introducing sidewall termination structure inclined-plane of 110mm at the broadside transverse direction, sidewall is the wall that parallels to the axis.
Described electron gun structure has certain distance between its said focusing electrode and the anode, is at a distance of 20.44mm between focusing electrode and the anode-supported tube bottom surface.
Described electron gun structure; Its said anode is the structure with band tapering hollow channel; Be to be one to have the convex frustum structure of hollow channel; Protruding anode passages inlet has the track shape end of rounding, and the distance between the protruding inlet of narrow edge direction center, round end both ends is 14mm, and the distance between the protruding inlet of broadside center, round end both ends is 74mm.
The invention provides a kind of electron gun structure that can produce high power square-section ribbon beam, comprise negative electrode, focusing electrode, anode and anode-supported tube.
Description of drawings
Fig. 1 is the structural upright sketch map of a kind of high power of the present invention square-section ribbon beam electron gun; Wherein: gun cathode 1, focusing electrode 2, anode 3 and anode-supported tube 4;
Fig. 2 is the physical dimension figure of rectangle cylinder negative electrode among the present invention;
Fig. 3 a is the front view of focusing electrode among the present invention;
Fig. 3 b is the rearview of focusing electrode among the present invention;
Fig. 3 c is the A-A cross-sectional view of focusing electrode among the present invention;
Fig. 3 d is the B-B cross-sectional view of focusing electrode among the present invention;
Fig. 4 a is the front view of anode among the present invention;
Fig. 4 b is the rearview of anode among the present invention;
Fig. 4 c is the A-A cross-sectional view of anode among the present invention;
Fig. 4 d is the B-B cross-sectional view of anode among the present invention;
Fig. 5 a is the front view of anode support tube among the present invention;
Fig. 5 b is the A-A cross-sectional view of anode support tube among the present invention;
Fig. 6 a annotates the trajectory diagram at narrow edge direction by the ribbon-like electron of the present invention that emulation provides;
Fig. 6 b annotates the trajectory diagram in broadside by the ribbon-like electron of the present invention that emulation provides.
Embodiment
Of the present invention is a kind of square-section ribbon beam electron gun structure, comprises negative electrode 1, focusing electrode 2, anode 3 and anode-supported tube 4.Its negative electrode 1 is the rectangle cylindrical structure, the focusing electrode 2 square frame shape structure that the focussing plane that on two transverse directions, has certain inclination angle is spliced into of serving as reasons; Its anode 3 is for having the structure of band tapering hollow channel, and anode 3 is fixedly arranged on the bottom center of anode-supported tube 4; Its anode-supported tube 4 is by anode connecting plate 41 and electron gun transitional cylinder 42 affixed forming.Rectangle cylinder negative electrode 1 matches with the hollow square frame of focusing electrode 2 bottoms, is suspended in the latter's the center and the broadside of cathode plane and is in the plane of hollow square frame.Negative electrode 1 is positioned at anode-supported tube 4 with focusing electrode 2, and the two the axis coincidence parallel with two planes of symmetry of anode 3 of two planes of symmetry of focusing electrode 2 has certain distance between focusing electrode 2 and the anode 3.The negative electrode 1 of this electron gun, focusing electrode 2, anode 3 and anode-supported tube 4 are arranged on the same axis, and total can produce satisfactory square-section ribbon-like electron and annotate with respect to two coordinate plane symmetries through the axis.
The present invention is used for X-band ribbon beam klystron, and the running parameter of electron gun is: direct voltage 150kV, and direct current 100A, perveance are 1.72 μ p, cathode load is about 9.85A/cm
2, the beam cross section that electronics is annotated is 50mm * 4mm.
For reaching above-mentioned these technical indicators, confirmed key structure spare through great amount of calculation and experiment test, the physical dimension of negative electrode 1, focusing electrode 2 and anode 3 is respectively shown in Fig. 2, Fig. 3 and Fig. 4.The working face of negative electrode 1 is the rectangle that broadside and narrow edge lengths are respectively 50mm and 20mm, and the radius of curvature of negative electrode cylinder is 34mm.The structure of focusing electrode 2 is comparatively complicated; Focusing electrode 2 in the open angle of broadside two focussing planes greater than the open angle of narrow edge direction two focussing planes; To guarantee electronics being annotated under the prerequisite that obtains effectively compression, can also offset the finite width electronics simultaneously and annotate the less relatively electric field force that exists on the inherent broadside at narrow edge direction.The broadside and the narrow edge lengths of focusing electrode 2 bottom rectangle hollow square frames are respectively 54mm and 20.8mm; At the focussing plane of narrow edge direction and the angle of axis is 38 degree; At the focussing plane of broadside and the angle of axis is 74 degree; Focussing plane on two transverse directions is 13.05mm along the distance that axis extends; For avoiding the oversize of broadside focussing plane, be that the continuation that the symmetric position place of 110mm introduces sidewall termination structure inclined-plane is extended in broadside, 20.44mm apart between focusing electrode 2 and anode-supported tube 4 bottom surfaces.Anode 3 is one to have the convex frustum structure of hollow channel; Protruding anode passages inlet has the track shape end of rounding; Distance between narrow edge direction inlet center, round end both ends is 14mm, and the distance between broadside inlet center, round end both ends is 74mm.
Negative electrode 1 is for soaking salt tungsten sponge; Focusing electrode 2 is processed by magnetism-free stainless steel, all uses arc transition for avoiding the excessive sharp-pointed part on it of internal field; Anode 3 is processed by oxygen-free copper, use CNC milling machine to shape after again with surperficial polish; Anode connecting plate 41 and electron gun transitional cylinder 42 are processed by magnetism-free stainless steel, and affixed through soldering after the plating nickel on surface is anode-supported tube 4.
Can know that from results of calculation the distance of annotating waist to cathode plane is about 60mm, half height of the narrow edge direction of line is about 2.09mm, and the electron gun perveance is about 1.72 μ p, and it is good to annotate the internal layer fluidity.Be respectively the ribbon-like electron that computed in software provides shown in Fig. 6 (a) and Fig. 6 (b) and annotate trajectory diagram in narrow edge direction and broadside.In the electron gun district, can not cause puncture less than 15MV/m through checking computations maximum field amplitude.
Claims (5)
1. the structure of a high power square-section ribbon beam electron gun; It is characterized in that; Comprise negative electrode, focusing electrode, anode and anode-supported bucket, this negative electrode, focusing electrode, anode and anode-supported tube are arranged on the same axis, and total is with respect to two coordinate plane symmetries crossing the axis; Wherein, negative electrode is the rectangle cylindrical structure, focuses on very square frame shape structure, and by on two transverse directions on wide, narrow both sides, the focussing plane that respectively has certain inclination angle is spliced; Anode is the structure with band tapering hollow channel, and anode head is fixedly arranged on anode-supported bucket inner bottom surface center; Rectangle cylinder negative electrode periphery matches with square frame shape focusing electrode bottom rectangle hollow square frame; Negative electrode and focusing electrode are positioned at the anode-supported tube; Two planes of symmetry of focusing electrode and the two axis parallel with two planes of symmetry of anode overlaps, and certain distance is arranged between focusing electrode and the anode.
2. electron gun structure as claimed in claim 1 is characterized in that: the cross section width edge length of said rectangle cylinder negative electrode is 50mm, and narrow edge lengths is 20mm, and the radius of curvature of negative electrode cylinder is 34mm.
3. electron gun structure as claimed in claim 1; It is characterized in that: the width edge length of the rectangular hollow square frame that said focusing electrode cooperates with negative electrode is 54mm; Narrow edge lengths is 20.8mm, and the angle of the focussing plane of transverse direction and axis is 38 degree on narrow limit, is 74 degree at the focussing plane of broadside transverse direction and the angle of axis; Focussing plane on the transverse direction on wide, narrow both sides is 13.05mm along the distance that axis extends; Excessive for the yardstick of avoiding broadside transverse direction focussing plane, be the continuation extension on the symmetric position place introducing sidewall termination structure inclined-plane of 110mm at the broadside transverse direction, sidewall is the wall that parallels to the axis.
4. electron gun structure as claimed in claim 1 is characterized in that: certain distance is arranged between said focusing electrode and the anode, is at a distance of 20.44mm between focusing electrode and the anode-supported tube bottom surface.
5. electron gun structure as claimed in claim 1; It is characterized in that: said anode is the structure with band tapering hollow channel; Be to be one to have the convex frustum structure of hollow channel; Protruding anode passages inlet has the track shape end of rounding, and the distance between the protruding inlet of narrow edge direction center, round end both ends is 14mm, and the distance between the protruding inlet of broadside center, round end both ends is 74mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102841893A CN102403179A (en) | 2010-09-15 | 2010-09-15 | Structure of high-power strip beam electron gun with rectangular section |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102841893A CN102403179A (en) | 2010-09-15 | 2010-09-15 | Structure of high-power strip beam electron gun with rectangular section |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111712033A (en) * | 2020-06-23 | 2020-09-25 | 中国科学院近代物理研究所 | Cascade drift tube potential well device and using method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587812A (en) * | 2008-05-20 | 2009-11-25 | 三星电子株式会社 | Electron beam focusing electrode and electron gun using the same |
| CN101728182A (en) * | 2008-10-24 | 2010-06-09 | 中国科学院电子学研究所 | Structure of electron gun for generating elliptical ribbon-like electron beams |
-
2010
- 2010-09-15 CN CN2010102841893A patent/CN102403179A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587812A (en) * | 2008-05-20 | 2009-11-25 | 三星电子株式会社 | Electron beam focusing electrode and electron gun using the same |
| CN101728182A (en) * | 2008-10-24 | 2010-06-09 | 中国科学院电子学研究所 | Structure of electron gun for generating elliptical ribbon-like electron beams |
Non-Patent Citations (1)
| Title |
|---|
| 赵鼎，阮存军，王勇，李庆生: "X波段高功率带状注速调管电子枪的研制", 《微波学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111712033A (en) * | 2020-06-23 | 2020-09-25 | 中国科学院近代物理研究所 | Cascade drift tube potential well device and using method thereof |
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Application publication date: 20120404 |