EP0239466A1 - Klystronausgangskopplungsvorrichtung und Klystron mit derselben - Google Patents

Klystronausgangskopplungsvorrichtung und Klystron mit derselben Download PDF

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Publication number
EP0239466A1
EP0239466A1 EP87400565A EP87400565A EP0239466A1 EP 0239466 A1 EP0239466 A1 EP 0239466A1 EP 87400565 A EP87400565 A EP 87400565A EP 87400565 A EP87400565 A EP 87400565A EP 0239466 A1 EP0239466 A1 EP 0239466A1
Authority
EP
European Patent Office
Prior art keywords
output circuit
klystron
output
cavity
circuit
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.)
Granted
Application number
EP87400565A
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English (en)
French (fr)
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EP0239466B1 (de
Inventor
Duc Tien Tran
Georges Faillon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
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Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0239466A1 publication Critical patent/EP0239466A1/de
Application granted granted Critical
Publication of EP0239466B1 publication Critical patent/EP0239466B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy

Definitions

  • the present invention relates to output circuits for conventional klystrons with a single beam, as well as for klystrons with multiple beams.
  • the output circuits according to the invention make it possible to solve the problem of manufacturing the output window of klystrons of high output power, for example of the order of several megawatts in continuous mode.
  • the invention makes it possible to use several outlet windows for a single klystron without disturbing the operation of the tube. Thus, each window is crossed only by a fraction of the output power of the tube. Even for klystrons with high output power, windows with the required qualities can be readily available.
  • the present invention relates to an output circuit for klystron, this klystron comprising an output cavity to which is coupled the output circuit which is also coupled to at least one use circuit, characterized in that the output circuit is constituted by an annular cavity, formed by an H-shaped section waveguide which is closed on itself, and which has an internal cylindrical wall and a cylindrical wall external, in that the output circuit includes orifices for coupling with the output cavity which are regularly arranged on its internal cylindrical wall and comprises at least one orifice for coupling with a use circuit disposed on its external cylindrical wall.
  • the orifices which ensure the coupling of the output circuit according to the invention with the output cavity of the klystrons are provided with windows made of dielectric material.
  • the orifices which ensure the coupling of the output circuit according to the invention with the output cavity of the klystrons must be placed opposite the beams.
  • the klystrons with several beams are perfected klystrons for which we seek at the same time compactness, high efficiency while using only a low accelerating voltage.
  • the beam can be divided into several elementary beams.
  • the acceleration voltage applied between the anode and the cathode is therefore divided by the factor N 2/5 .
  • the acceleration voltage is divided by 6 2/5 , that is to say substantially by a factor of 2.
  • Figure 1 shows the diagram of a klystron with several beams according to the prior art.
  • FIG. 2 schematically represents a view in longitudinal section of a klystron with several beams according to an embodiment of the invention.
  • This tube comprises electron guns made up of cathodes which bear the reference 1 and an anode which bears the reference 2. This anode is pierced with holes arranged opposite the cathodes.
  • This klystron has four resonance cavities 3 which are used to modulate the beams in speed.
  • Sliding tubes 4 connect the cavities to each other and ensure sealing.
  • the focusing of the beams is carried out by a set of coils 5. It can be seen in FIG. 2 that two shielding plates 6, made of magnetic material, for example, have been placed on either side of the set of coils 5 in soft iron. These plates are pierced with holes of diameter very close to those of the beams, so as to allow the passage of the beams of the electron guns into the cavities then from the cavities to the collector 7.
  • FIG. 2 two electron beams 8 and 9 are shown.
  • These plates 6 are equipotential surfaces from a magnetic point of view and contribute to creating along the tube a magnetic field as constant as possible.
  • the shielding plate 6 located on the side of the barrels makes it possible to prevent the leakage field of the coils from reaching the cathodes.
  • this shielding plate 6 carries include a bulge 10 directed towards the cathodes.
  • a cylinder 11 made of magnetic material is attached to this shielding plate 6. This cylinder 11 is connected to other parts 12, which are made of ceramic, for reasons of insulation.
  • Figure 3 is a sectional view along the direction AA ⁇ shown in Figure 2.
  • the klystron of Figure 2 has six sliding tubes 4, so has six electron beams.
  • the ends of a cavity 3 have been shown, but the focusing device has not been shown.
  • the sliding tubes are arranged in a circle centered on the longitudinal axis XX ⁇ of the tube.
  • the angular difference between the tubes is constant.
  • the electric fields have an identical configuration, in each cavity, between the parts of the sliding tubes which face each other.
  • the distance separating two parts of a sliding tube which face each other is of the order of the internal diameter of the sliding tube.
  • the distribution of the electric field between two parts of a sliding tube which face each other has a cylindrical symmetry around the longitudinal axis of the sliding tube.
  • each cavity 3 of the tube has higher resonant frequencies very far from the frequency of the fundamental mode TM01 of the klystron.
  • FIG 4 there is shown a perspective view of an embodiment of the output circuit 13 according to the invention.
  • This output circuit collects the high frequency power and distributes it to the use circuit.
  • This output circuit is coupled to the output cavity of the klystron, that is to say to the last cavity of the klystron, that which is closest to the collector.
  • This output circuit must resonate at the same frequency as the tube output cavity.
  • a output circuit consisting of an annular cavity, formed by a waveguide of H-shaped section which is closed on itself.
  • This output circuit 13 is placed around the output cavity of the klystron, as is clearly shown in Figure 2 and in Figure 5 which shows in more detail than Figure 2 the output cavity and the output circuit.
  • the output circuit 13 is coupled to the output cavity of the klystron by orifices 15 which are evenly distributed on the wall of the output circuit which is in contact with the output cavity. This wall is the internal cylindrical wall 22 of the output circuit.
  • the output circuit is also coupled to the use circuit, which is a waveguide 16 in the example of FIGS. 4 and 5, by an orifice 19 carried by the wall of the output circuit which faces the bearing wall. the orifices 15. This wall is the external cylindrical wall 23 of the output circuit.
  • the orifices 15 may be empty as is the case in FIG. 4.
  • the use circuit 16 which has a window 17 ensuring vacuum tightness while letting the high frequency power pass.
  • the window 17 can be placed at the level of the coupling orifice 19 between the output circuit and the use circuit, or can be placed further in the guide 16 as is the case in FIG. 5.
  • the operating mode of this output circuit is of the transverse electrical type.
  • this H-shaped cross section makes it possible to prevent the arrangement of the coupling orifice (s) 19 - see FIG. 5 - between the output circuit 13 and the circuit (s) for using the tube does not disturb the symmetry of the beams. It is therefore possible without inconvenience to couple the output circuit 13 by a single coupling orifice 19 to a single user circuit or to couple the output circuit 13 by several coupling orifices 19, positioned in any manner, to several circuits of use. .
  • the output circuit according to the invention is of great interest when used on conventional klystrons with a single beam of high output power.
  • Figure 6 is a cross-sectional view showing the output cavity of a single beam klystron and the output circuit according to the invention which is coupled to this cavity.
  • the coupling orifices 15 between the output cavity and the output circuit are provided with windows 21 made of dielectric material which ensure the seal and which are crossed only by a fraction of the total output power. If N windows are used, each window is only crossed by a fraction equal to 1 / N of the total output power. We can therefore easily have windows with the required qualities.
  • the number N coupling orifices 15 is chosen according to the power output of the tube and the characteristics of the windows used.
  • the coupling orifices 15 between the outlet cavity of the tube and the outlet circuit are regularly distributed over the wall of the outlet circuit which is in contact with the outlet cavity, as shown in the example in Figure 4.
  • the coupling orifices 15 can be left empty and a window is provided in each use circuit.

Landscapes

  • Microwave Tubes (AREA)
EP87400565A 1986-03-19 1987-03-13 Klystronausgangskopplungsvorrichtung und Klystron mit derselben Expired - Lifetime EP0239466B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8603949 1986-03-19
FR8603949A FR2596199B1 (fr) 1986-03-19 1986-03-19 Circuit de sortie pour klystron et klystron comportant un tel circuit de sortie

Publications (2)

Publication Number Publication Date
EP0239466A1 true EP0239466A1 (de) 1987-09-30
EP0239466B1 EP0239466B1 (de) 1990-01-17

Family

ID=9333310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400565A Expired - Lifetime EP0239466B1 (de) 1986-03-19 1987-03-13 Klystronausgangskopplungsvorrichtung und Klystron mit derselben

Country Status (5)

Country Link
US (1) US4827192A (de)
EP (1) EP0239466B1 (de)
JP (1) JPH07118271B2 (de)
DE (1) DE3761464D1 (de)
FR (1) FR2596199B1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625836B1 (fr) * 1988-01-13 1996-01-26 Thomson Csf Collecteur d'electrons pour tube electronique
FR2737340B1 (fr) * 1995-07-28 1997-08-22 Thomson Tubes Electroniques Tube electronique multifaisceau a couplage cavite/faisceau ameliore
US5811943A (en) * 1996-09-23 1998-09-22 Schonberg Research Corporation Hollow-beam microwave linear accelerator
FR2756970B1 (fr) * 1996-12-10 2003-03-07 Thomson Tubes Electroniques Tube hyperfrequence a interaction longitudinale a cavite a sortie au dela du collecteur
FR2764730B1 (fr) * 1997-06-13 1999-09-17 Thomson Tubes Electroniques Canon electronique pour tube electronique multifaisceau et tube electronique multifaisceau equipe de ce canon
FR2780809B1 (fr) 1998-07-03 2003-11-07 Thomson Tubes Electroniques Tube electronique multifaisceau avec champ magnetique de correction de trajectoire des faisceaux
CN1110876C (zh) * 1999-09-24 2003-06-04 中国科学院上海光学精密机械研究所 径向波激光器
FR2803454B1 (fr) * 1999-12-30 2003-05-16 Thomson Tubes Electroniques Generateur d'impulsions hyperfrequences integrant un compresseur d'impulsions
EP1702346B1 (de) * 2003-12-19 2008-05-07 European Organization for Nuclear Research Klystron-verstärker
JP4653649B2 (ja) * 2005-11-30 2011-03-16 株式会社東芝 マルチビームクライストロン装置
JP4991266B2 (ja) * 2006-12-11 2012-08-01 株式会社東芝 マルチビームクライストロン
CN100536061C (zh) * 2007-03-29 2009-09-02 汕头大学 高次模多注速调管输出电路
US8847489B2 (en) * 2009-10-21 2014-09-30 Omega P-Inc. Low-voltage, multi-beam klystron
RU2483386C2 (ru) * 2011-08-29 2013-05-27 Открытое акционерное общество "Научно-производственное предприятие "Контакт" Мощный широкополосный клистрон
CN103632907B (zh) * 2012-08-23 2015-09-30 中国科学院电子学研究所 带状注速调管多间隙腔输出装置
US20150137513A1 (en) * 2013-11-21 2015-05-21 Swagelok Company Keyed fitting

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2381320A (en) * 1940-11-28 1945-08-07 Westinghouse Electric Corp Electromagnetic apparatus
FR1173546A (fr) * 1957-04-09 1959-02-26 Thomson Houston Comp Francaise Perfectionnement du magnétron multicavités à circuit de stabilisation oscillant sur un mode à champ électrique circulaire
US2901660A (en) * 1953-04-10 1959-08-25 Emi Ltd Electron discharge devices employing cavity resonators
GB826788A (en) * 1957-04-03 1960-01-20 Cole E K Ltd Improvements in or relating to wave-guides
US2963663A (en) * 1957-12-31 1960-12-06 Bell Telephone Labor Inc Waveguide transducer
FR1572746A (de) * 1967-07-03 1969-06-27
FR2336788A1 (fr) * 1975-12-23 1977-07-22 Thomson Csf Nouveau tube electronique oscillateur, amplificateur

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843795A (en) * 1954-06-09 1958-07-15 Gen Electric Shielded waveguide window
US3278795A (en) * 1962-12-03 1966-10-11 Gen Electric Multiple-beam klystron apparatus with waveguide periodically loaded with resonant elements
WO1981001628A1 (en) * 1979-11-28 1981-06-11 V Pasmannik Klystron

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2381320A (en) * 1940-11-28 1945-08-07 Westinghouse Electric Corp Electromagnetic apparatus
US2901660A (en) * 1953-04-10 1959-08-25 Emi Ltd Electron discharge devices employing cavity resonators
GB826788A (en) * 1957-04-03 1960-01-20 Cole E K Ltd Improvements in or relating to wave-guides
FR1173546A (fr) * 1957-04-09 1959-02-26 Thomson Houston Comp Francaise Perfectionnement du magnétron multicavités à circuit de stabilisation oscillant sur un mode à champ électrique circulaire
US2963663A (en) * 1957-12-31 1960-12-06 Bell Telephone Labor Inc Waveguide transducer
FR1572746A (de) * 1967-07-03 1969-06-27
FR2336788A1 (fr) * 1975-12-23 1977-07-22 Thomson Csf Nouveau tube electronique oscillateur, amplificateur

Also Published As

Publication number Publication date
DE3761464D1 (de) 1990-02-22
FR2596199B1 (fr) 1994-03-18
JPH07118271B2 (ja) 1995-12-18
EP0239466B1 (de) 1990-01-17
JPS62229735A (ja) 1987-10-08
US4827192A (en) 1989-05-02
FR2596199A1 (fr) 1987-09-25

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