FR2453497A1 - Dispositif de focalisation a aimants permanents pour tube electronique, et tube electronique muni d'un tel dispositif - Google Patents

Dispositif de focalisation a aimants permanents pour tube electronique, et tube electronique muni d'un tel dispositif

Info

Publication number
FR2453497A1
FR2453497A1 FR7908371A FR7908371A FR2453497A1 FR 2453497 A1 FR2453497 A1 FR 2453497A1 FR 7908371 A FR7908371 A FR 7908371A FR 7908371 A FR7908371 A FR 7908371A FR 2453497 A1 FR2453497 A1 FR 2453497A1
Authority
FR
France
Prior art keywords
electronic tube
permanent magnet
magnet focusing
focusing device
casing
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
FR7908371A
Other languages
English (en)
Other versions
FR2453497B1 (fr
Inventor
Jean Pontvianne
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7908371A priority Critical patent/FR2453497A1/fr
Priority to US06/134,567 priority patent/US4337413A/en
Priority to GB8010819A priority patent/GB2046011B/en
Priority to CA000348935A priority patent/CA1153113A/fr
Priority to JP4206580A priority patent/JPS55133734A/ja
Priority to DE19803012893 priority patent/DE3012893A1/de
Publication of FR2453497A1 publication Critical patent/FR2453497A1/fr
Application granted granted Critical
Publication of FR2453497B1 publication Critical patent/FR2453497B1/fr
Granted legal-status Critical Current

Links

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
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087—Magnetic focusing arrangements
    • 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
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087—Magnetic focusing arrangements
    • H01J23/0873—Magnetic focusing arrangements with at least one axial-field reversal along the interaction space, e.g. P.P.M. focusing

Landscapes

  • Microwave Tubes (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Particle Accelerators (AREA)

Abstract

L'invention concerne un dispositif de focalisation pour tube électronique. Le dispositif 27 est constitué d'aimants 1 et de pièces polaires 24 alternés en forme de rondelles, serrées les unes contre les autres de façon à former un cylindre entourant l'enveloppe 29 du tube 30 et de même axe XX' que ce dernier, axe le long duquel se propage le faisceau d'électrons 22. Les rondelles aimantées 1, percées en leur centre en 2, comportent une ouverture 3 permettant leur mise en place entre les pièces polaires 28 préalablement fixées sur l'enveloppe 29. Application à la focalisation des tubes à onde progressive du type ordinaire.
FR7908371A 1979-04-03 1979-04-03 Dispositif de focalisation a aimants permanents pour tube electronique, et tube electronique muni d'un tel dispositif Granted FR2453497A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR7908371A FR2453497A1 (fr) 1979-04-03 1979-04-03 Dispositif de focalisation a aimants permanents pour tube electronique, et tube electronique muni d'un tel dispositif
US06/134,567 US4337413A (en) 1979-04-03 1980-03-27 Focusing device with permanent magnets for electron tube and electron tube equipped with such a device
GB8010819A GB2046011B (en) 1979-04-03 1980-03-31 Periodic permanent magnet focussing systems
CA000348935A CA1153113A (fr) 1979-04-03 1980-04-01 Dispositif de focalisation a aimants permanents pour tube electronique et tube electronique dote d'un tel dispositif
JP4206580A JPS55133734A (en) 1979-04-03 1980-04-02 Focusing unit for electron tube
DE19803012893 DE3012893A1 (de) 1979-04-03 1980-04-02 Permanentmagnet-fokussiervorrichtung fuer elektronenroehren und mit solcher vorrichtung ausgeruestete elektronenroehren

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7908371A FR2453497A1 (fr) 1979-04-03 1979-04-03 Dispositif de focalisation a aimants permanents pour tube electronique, et tube electronique muni d'un tel dispositif

Publications (2)

Publication Number Publication Date
FR2453497A1 true FR2453497A1 (fr) 1980-10-31
FR2453497B1 FR2453497B1 (fr) 1981-11-27

Family

ID=9223891

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7908371A Granted FR2453497A1 (fr) 1979-04-03 1979-04-03 Dispositif de focalisation a aimants permanents pour tube electronique, et tube electronique muni d'un tel dispositif

Country Status (6)

Country Link
US (1) US4337413A (fr)
JP (1) JPS55133734A (fr)
CA (1) CA1153113A (fr)
DE (1) DE3012893A1 (fr)
FR (1) FR2453497A1 (fr)
GB (1) GB2046011B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506229A (en) * 1982-01-26 1985-03-19 The United States Of America As Represented By The Department Of Energy Free electron laser designs for laser amplification
US4511850A (en) * 1982-01-26 1985-04-16 The United States Of America As Represented By The United States Department Of Energy Short pulse free electron laser amplifier
US4500843A (en) * 1982-01-26 1985-02-19 The United States Of America As Represented By The United States Department Of Energy Multifrequency, single pass free electron laser
JPS59203424A (ja) * 1983-04-28 1984-11-17 ヤンマーディーゼル株式会社 リヤデイスチヤ−ジモ−アの回転ブレ−ド
EP0624893A3 (fr) * 1993-05-12 1995-10-11 Eev Ltd Dispositifs magnétiques.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1471876A (fr) * 1965-03-25 1967-03-03 Siemens Ag Tube à faisceau électronique, en particulier tube à ondes progressives
FR2011445A1 (fr) * 1968-06-21 1970-02-27 Matsushita Electronics Corp
DE2652020A1 (de) * 1975-12-15 1978-05-24 Siemens Ag Herstellungsverfahren fuer eine lauffeldroehre mit einer zylinderfoermigen vakuumhuelle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2812470A (en) * 1954-10-22 1957-11-05 Bell Telephone Labor Inc Periodic focusing in traveling wave tubes
US2947907A (en) * 1958-12-31 1960-08-02 Bell Telephone Labor Inc Traveling wave tube
DE1491453A1 (de) * 1965-03-25 1969-07-03 Siemens Ag Laufzeitroehre,insbesondere Wanderfeldroehre,mit einem Magnetsystem zur gebuendelten Fuehrung des Elektronenstrahls mittels eines homogenen Magnetfeldes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1471876A (fr) * 1965-03-25 1967-03-03 Siemens Ag Tube à faisceau électronique, en particulier tube à ondes progressives
FR2011445A1 (fr) * 1968-06-21 1970-02-27 Matsushita Electronics Corp
DE2652020A1 (de) * 1975-12-15 1978-05-24 Siemens Ag Herstellungsverfahren fuer eine lauffeldroehre mit einer zylinderfoermigen vakuumhuelle

Also Published As

Publication number Publication date
US4337413A (en) 1982-06-29
JPS55133734A (en) 1980-10-17
GB2046011A (en) 1980-11-05
CA1153113A (fr) 1983-08-30
DE3012893A1 (de) 1980-10-09
FR2453497B1 (fr) 1981-11-27
GB2046011B (en) 1983-01-26

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Legal Events

Date Code Title Description
ST Notification of lapse