GB1060264A - High frequency electron discharge device - Google Patents

High frequency electron discharge device

Info

Publication number
GB1060264A
GB1060264A GB3304164A GB3304164A GB1060264A GB 1060264 A GB1060264 A GB 1060264A GB 3304164 A GB3304164 A GB 3304164A GB 3304164 A GB3304164 A GB 3304164A GB 1060264 A GB1060264 A GB 1060264A
Authority
GB
United Kingdom
Prior art keywords
bore
helices
pair
fixedly attached
focusing structure
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
GB3304164A
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates 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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB1060264A publication Critical patent/GB1060264A/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
    • H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J25/36—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field
    • H01J25/40—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field the backward travelling wave being utilised
    • 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)

Abstract

1,060,264. Travelling wave tubes. VARIAN ASSOCIATES. Aug. 13, 1964 [Aug. 26, 1963], No. 33041/64. Addition to 1,054,462. Heading H1D. A permanent magnet periodically focused travelling wave tube has part of its envelope formed by the focusing structure 10 and a slow wave structure assembly 9 fixedly attached to a bore in the focusing structure. The focusing structure comprises adjacent polepieces 31 and spacer members 30 disposed therebetween, each pair of adjacent polepieces defining a hollow recess within which a pair of semi-cylindrical magnets 32, 33 are disposed to form a ring-shaped magnet, the opposing surfaces of the magnets being spaced so as to form a gap, e.g. of between 0À015-0À030 inch. The slow-wave circuit assembly is fixedly attached by being shrunk-fit within the bore. The bore is defined by the array of non-magnetic spacer members and the magnetic pole-pieces, the surface of the bore having a finish of substantially rms 16 micro inch. The travelling wavetube has a plurality of helices each fixedly attached to spaced support rods which extend along the length of the helices, each pair of adjacent helices being separated by a circuit sever.
GB3304164A 1963-08-26 1964-08-13 High frequency electron discharge device Expired GB1060264A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US30445763A 1963-08-26 1963-08-26

Publications (1)

Publication Number Publication Date
GB1060264A true GB1060264A (en) 1967-03-01

Family

ID=23176598

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3304164A Expired GB1060264A (en) 1963-08-26 1964-08-13 High frequency electron discharge device

Country Status (3)

Country Link
GB (1) GB1060264A (en)
NL (1) NL6409472A (en)
SE (1) SE343982B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2545645A1 (en) * 1983-05-03 1984-11-09 Thomson Csf Method of manufacturing a sheath segment said to have incorporated pole pieces for microwave tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2545645A1 (en) * 1983-05-03 1984-11-09 Thomson Csf Method of manufacturing a sheath segment said to have incorporated pole pieces for microwave tubes

Also Published As

Publication number Publication date
SE343982B (en) 1972-03-20
NL6409472A (en) 1965-03-01

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