GB757369A - Improvements in or relating to electron beam focusing systems - Google Patents

Improvements in or relating to electron beam focusing systems

Info

Publication number
GB757369A
GB757369A GB12311/54A GB1231154A GB757369A GB 757369 A GB757369 A GB 757369A GB 12311/54 A GB12311/54 A GB 12311/54A GB 1231154 A GB1231154 A GB 1231154A GB 757369 A GB757369 A GB 757369A
Authority
GB
United Kingdom
Prior art keywords
magnets
field
pole
pieces
april
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
GB12311/54A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB757369A publication Critical patent/GB757369A/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
    • H01J23/0873—Magnetic focusing arrangements with at least one axial-field reversal along the interaction space, e.g. P.P.M. focusing

Landscapes

  • Particle Accelerators (AREA)
  • Microwave Tubes (AREA)
GB12311/54A 1953-04-29 1954-04-28 Improvements in or relating to electron beam focusing systems Expired GB757369A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US351984A US2841739A (en) 1953-04-29 1953-04-29 Electron beam systems

Publications (1)

Publication Number Publication Date
GB757369A true GB757369A (en) 1956-09-19

Family

ID=23383280

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12311/54A Expired GB757369A (en) 1953-04-29 1954-04-28 Improvements in or relating to electron beam focusing systems

Country Status (7)

Country Link
US (2) US2841739A (en:Method)
BE (1) BE528454A (en:Method)
CH (1) CH342662A (en:Method)
DE (2) DE1127498B (en:Method)
FR (1) FR1099234A (en:Method)
GB (1) GB757369A (en:Method)
NL (1) NL95352C (en:Method)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1276217B (de) * 1958-06-25 1968-08-29 Siemens Ag Elektronenstrahlroehre mit Geschwindigkeitsmodulation, insbesondere Lauffeldroehre
GB2152742A (en) * 1980-04-28 1985-08-07 Emi Varian Ltd Microwave amplifiers and oscillators
GB2152741A (en) * 1980-04-28 1985-08-07 Emi Varian Ltd Producing an electron beam

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2925508A (en) * 1955-07-28 1960-02-16 Sperry Rand Corp Electron beam focusing structure
NL99653C (en:Method) * 1956-03-01
US2945153A (en) * 1956-08-31 1960-07-12 Rca Corp Electron beam tube
US2991391A (en) * 1957-07-24 1961-07-04 Varian Associates Electron beam discharge apparatus
US2966609A (en) * 1957-11-22 1960-12-27 Gen Electric Magnetic structures for high frequency energy interchange apparatus
NL100798C (en:Method) * 1958-03-12
US2939995A (en) * 1958-05-19 1960-06-07 Bell Telephone Labor Inc Traveling wave tube
NL277862A (en:Method) * 1961-05-02
US3265925A (en) * 1962-07-03 1966-08-09 Bell Telephone Labor Inc Field perturbing means for preventing beam scalloping in reversed field focusing system
FR2363185A1 (fr) * 1976-08-27 1978-03-24 Thomson Csf Dispositif de couplage pour tube hyperfrequence et tube hyperfrequence comportant un tel dispositif
US5332948A (en) * 1992-05-13 1994-07-26 Litton Systems, Inc. X-z geometry periodic permanent magnet focusing system
JP5835822B1 (ja) * 2014-06-30 2015-12-24 Ｎｅｃネットワーク・センサ株式会社 高周波回路システム
US11961693B2 (en) 2020-11-15 2024-04-16 Elve Inc. Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB504802A (en) * 1937-11-01 1939-05-01 Frederick Hermes Nicoll Improvements in or relating to permanent magnet devices for producing axially symmetrical magnetic fields
GB539422A (en) * 1940-02-06 1941-09-10 Standard Telephones Cables Ltd Improvements in or relating to arrangments for producing concentrated beams of electrons, particularly for electron discharge apparatus of the velocity modulation type
NL62817C (en:Method) * 1940-05-04
USRE22389E (en) * 1940-07-13 1943-11-02 Electron beam concentrating
FR956343A (en:Method) * 1947-10-31 1950-01-31
US2741718A (en) * 1953-03-10 1956-04-10 Sperry Rand Corp High frequency apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1276217B (de) * 1958-06-25 1968-08-29 Siemens Ag Elektronenstrahlroehre mit Geschwindigkeitsmodulation, insbesondere Lauffeldroehre
GB2152742A (en) * 1980-04-28 1985-08-07 Emi Varian Ltd Microwave amplifiers and oscillators
GB2152741A (en) * 1980-04-28 1985-08-07 Emi Varian Ltd Producing an electron beam

Also Published As

Publication number Publication date
NL95352C (en:Method)
BE528454A (en:Method)
FR1099234A (fr) 1955-08-31
USRE25189E (en) 1962-06-19
DE1127498B (de) 1962-04-12
DE1071237B (en:Method)
CH342662A (fr) 1959-11-30
US2841739A (en) 1958-07-01

Similar Documents

Publication Publication Date Title
GB757369A (en) Improvements in or relating to electron beam focusing systems
GB779733A (en) Improvements relating to electron-discharge devices
US2847607A (en) Magnetic focusing system
US2918593A (en) Traveling wave tubes
US4658228A (en) Confinement of longitudinal, axially symmetric, magnetic fields to annular regions with permanent magnets
GB773394A (en) Magnet arrangements for travelling wave tubes
US2867745A (en) Periodic magnetic focusing system
US2797360A (en) Travelling wave amplifiers
US3324339A (en) Periodic permanent magnet electron beam focusing arrangement for traveling-wave tubes having plural interaction cavities in bore of each annular magnet
US2844754A (en) Electron beam focusing system
GB674758A (en) Improvements in or relating to electron discharge devices
US2798183A (en) Traveling-wave tube
US7116051B2 (en) Multibeam klystron
US2936408A (en) Permanent magnets
GB853061A (en) Improvements in or relating to periodic magnetic focusing systems for electron beam tubes
US2959740A (en) Parametric amplifier modulation expander
GB726823A (en) Improvements in or relating to magnetic circuits for travelling wave apparatus
GB945610A (en) Velocity modulated discharge devices with magnetic beam focusing
US3896329A (en) Permanent magnet beam focus structure for linear beam tubes
GB750208A (en) Improvements in or relating to electromagnetic wave devices such as travelling wave tubes
GB1005835A (en) A travelling wave tube
US2822500A (en) Traveling wave electron discharge devices
US3206635A (en) Electron stream focusing
US2882439A (en) Travelling wave tube device
US2825840A (en) Traveling wave electron discharge devices