GB953268A - Improvements in multi-cavity klystrons - Google Patents

Improvements in multi-cavity klystrons

Info

Publication number
GB953268A
GB953268A GB21910/62A GB2191062A GB953268A GB 953268 A GB953268 A GB 953268A GB 21910/62 A GB21910/62 A GB 21910/62A GB 2191062 A GB2191062 A GB 2191062A GB 953268 A GB953268 A GB 953268A
Authority
GB
United Kingdom
Prior art keywords
magnetic
cavity resonators
parts
members
permanent
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
GB21910/62A
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 GB953268A publication Critical patent/GB953268A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
    • H01J25/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
    • H01J25/12—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator with pencil-like electron stream in the axis of the resonators
    • 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)

Abstract

953,268. Velocity-modulated beam tubes. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 6, 1962 [June 9, 1961], No. 21910/62. Heading H1D. A klystron, having more than two cavity resonators and having a magnetic focusing system arranged to provide a magnetic field the direction of which is repeatedly reversed along the electron beam, has drift tubes which comprise a plurality of short tubular parts 11 having cooling members 19 on their outer surfaces and spaced apart along the axis of the beam by cavity resonators 17, the focusing system comprising a plurality of permanent - magnet members 29 disposed outside the cooling members and connected by magnetic yokes 27 to polepieces 25 spaced along the outside of the drift tube, the spacing of the polepieces being such as to produce magnetic fields Ba within the parts of the drift tubes and to produce magnetic fields Bb of similar intensity but opposite direction within the portions of the cavity resonators which are between successive parts of the drift tubes. The magnetic members 29 each comprises two permanent-magnet discs secured to the yoke parts having arranged between them a movable permanent-magnet disc, the intensity of the magnetic field within the tube thus being controllable. The beam has a maximum diameter in the region of the cavity resonators.
GB21910/62A 1961-06-09 1962-06-06 Improvements in multi-cavity klystrons Expired GB953268A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP27312A DE1158183B (en) 1961-06-09 1961-06-09 Permanent magnetic focusing arrangement for a high-performance multi-chamber klystron

Publications (1)

Publication Number Publication Date
GB953268A true GB953268A (en) 1964-03-25

Family

ID=7370781

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21910/62A Expired GB953268A (en) 1961-06-09 1962-06-06 Improvements in multi-cavity klystrons

Country Status (5)

Country Link
US (1) US3172008A (en)
CH (1) CH403093A (en)
DE (1) DE1158183B (en)
GB (1) GB953268A (en)
NL (1) NL279385A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366904A (en) * 1965-12-14 1968-01-30 Philips Corp High-power multi-stage klystron with adjustable periodic magnetic focussing

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274430A (en) * 1963-08-01 1966-09-20 Massachusetts Inst Technology Biased-gap klystron
GB1164268A (en) * 1966-12-13 1969-09-17 Air Reduction Improvements in or relating to Electron Beam Apparatus.
DE3050257C1 (en) * 1980-01-28 1984-10-04 Sergej Sergeevič Drozdov Alternating periodic magnetic focusing system
US5378988A (en) * 1993-01-22 1995-01-03 Pulyer; Yuly M. MRI system having high field strength open access magnet
DE4328232A1 (en) * 1993-08-21 1995-02-23 Licentia Gmbh Electron-beam tube (cathode-ray tube), in particular travelling-wave tube

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2940000A (en) * 1954-07-26 1960-06-07 Applied Radiation Corp Linear electron accelerators
NL221236A (en) * 1956-10-01
US2993141A (en) * 1958-02-10 1961-07-18 Richard F Post Producing bunched electron beams

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366904A (en) * 1965-12-14 1968-01-30 Philips Corp High-power multi-stage klystron with adjustable periodic magnetic focussing

Also Published As

Publication number Publication date
DE1158183B (en) 1963-11-28
US3172008A (en) 1965-03-02
NL279385A (en)
CH403093A (en) 1965-11-30

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