GB865725A - Improvements in or relating to magnetic focusing systems for travelling-wave tubes - Google Patents

Improvements in or relating to magnetic focusing systems for travelling-wave tubes

Info

Publication number
GB865725A
GB865725A GB22033/58A GB2203358A GB865725A GB 865725 A GB865725 A GB 865725A GB 22033/58 A GB22033/58 A GB 22033/58A GB 2203358 A GB2203358 A GB 2203358A GB 865725 A GB865725 A GB 865725A
Authority
GB
United Kingdom
Prior art keywords
rods
main
soft iron
travelling wave
field
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.)
Expired
Application number
GB22033/58A
Other languages
English (en)
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB865725A publication Critical patent/GB865725A/en
Expired 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
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microwave Tubes (AREA)
  • Particle Accelerators (AREA)
GB22033/58A 1957-07-11 1958-07-09 Improvements in or relating to magnetic focusing systems for travelling-wave tubes Expired GB865725A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL218874 1957-07-11

Publications (1)

Publication Number Publication Date
GB865725A true GB865725A (en) 1961-04-19

Family

ID=19750926

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22033/58A Expired GB865725A (en) 1957-07-11 1958-07-09 Improvements in or relating to magnetic focusing systems for travelling-wave tubes

Country Status (6)

Country Link
US (1) US2956193A (forum.php)
CH (1) CH362758A (forum.php)
DE (1) DE1112790B (forum.php)
FR (1) FR1211420A (forum.php)
GB (1) GB865725A (forum.php)
NL (2) NL218874A (forum.php)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183398A (en) * 1960-08-04 1965-05-11 Raytheon Co Beam focusing magnet
US3164742A (en) * 1960-12-27 1965-01-05 Gen Electric High frequency energy interchange device
NL277862A (forum.php) * 1961-05-02
NL133615C (forum.php) * 1962-10-04
US3283200A (en) * 1963-12-12 1966-11-01 Varian Associates High frequency electron discharge device having improved permanent magnetic focusing
DE1491426A1 (de) * 1964-08-12 1969-05-22 Siemens Ag Permanentmagnetsystem zur gebuendelten Fuehrung eines Elektrodenstrahls ueber eine lengere Wegstrecke,insbesondere fuer Wanderfeldroehren
DE1491444B2 (de) * 1965-01-26 1972-04-06 Siemens AG, 1000 Berlin u 8000 München Permanentmagnetsystem zur erzeugung eines im wesentlichen homogenen magnetfeldes fuer die gebuendelte fuehrung eines elektronenstrahls ueber eine laengere wegstrecke, insbesondere fuer wanderfeldroehren
US3349354A (en) * 1965-06-02 1967-10-24 Miyata Saburo Means for imposing electric and magnetic fields on flowing fluids
US3896329A (en) * 1972-09-21 1975-07-22 Varian Associates Permanent magnet beam focus structure for linear beam tubes
US5744910A (en) * 1993-04-02 1998-04-28 Litton Systems, Inc. Periodic permanent magnet focusing system for electron beam

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825840A (en) * 1953-01-29 1958-03-04 Itt Traveling wave electron discharge devices
GB748946A (en) * 1953-03-26 1956-05-16 Standard Telephones Cables Ltd Improvements in or relating to travelling wave apparatus
US2844754A (en) * 1953-04-29 1958-07-22 Bell Telephone Labor Inc Electron beam focusing system
DE1098625B (de) * 1953-11-13 1961-02-02 Siemens Ag Magnetisches Buendelungssystem zur gebuendelten Fuehrung einer (mehrerer) Elektronenstroemung (en) mittels eines homogenen Magnetfeldes laengs einer groesseren Wegstrecke, insbesondere fuer Wanderfeldroehren
NL200488A (forum.php) * 1954-09-22
NL99653C (forum.php) * 1956-03-01

Also Published As

Publication number Publication date
NL107303C (forum.php)
NL218874A (forum.php)
DE1112790B (de) 1961-08-17
CH362758A (de) 1962-06-30
FR1211420A (fr) 1960-03-16
US2956193A (en) 1960-10-11

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