GB785110A - Electron tube magnetic focusing device - Google Patents

Electron tube magnetic focusing device

Info

Publication number
GB785110A
GB785110A GB6113/56A GB611356A GB785110A GB 785110 A GB785110 A GB 785110A GB 6113/56 A GB6113/56 A GB 6113/56A GB 611356 A GB611356 A GB 611356A GB 785110 A GB785110 A GB 785110A
Authority
GB
United Kingdom
Prior art keywords
yokes
magnetic
rings
inner peripheries
magnetic material
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
GB6113/56A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB785110A publication Critical patent/GB785110A/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

  • Microwave Tubes (AREA)

Abstract

785,110. Electron beam focusing apparatus. STANDARD TELEPHONES & CABLES, Ltd. (Nippon Electric Co., Ltd.). Feb. 28, 1956, No. 6113/56. Class 39(1). A magnetic focusing means for an electron beam comprises a plurality of annular magnetic means 2 positioned end-to-end to provide a cylindrical structure, annular yokes 3 of magnetic material positioned intermediate the magnets 2 and extending radially inwardly of the cylinder to produce magnetic effects in close proximity to the beam and means for avoiding unwanted resonance effects by the cavities 5 intermediate the yokes 3 comprising non- magnetic metallic means 4 intermediate adjacent yokes at their inner peripheries bridging the gaps therebetween. As shown the inner peripheries of the yokes are substantially continuous with the envelope 1 for the beam and the non-magnetic pieces 4 are metal rings interfitted between the yokes. In another embodiment there is provided around the envelope a composite cylinder of rings of magnetic and non-magnetic material having an outside diameter equal to the inner diameter of the yokes 3, the rings of magnetic material being axially coincident with the inner peripheries of the yokes.
GB6113/56A 1955-06-28 1956-02-28 Electron tube magnetic focusing device Expired GB785110A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2843775X 1955-06-28

Publications (1)

Publication Number Publication Date
GB785110A true GB785110A (en) 1957-10-23

Family

ID=32983736

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6113/56A Expired GB785110A (en) 1955-06-28 1956-02-28 Electron tube magnetic focusing device

Country Status (2)

Country Link
US (1) US2843775A (en)
GB (1) GB785110A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971113A (en) * 1957-10-17 1961-02-07 High Voltage Engineering Corp Acceleration tube for microwave linear accelerator having an integral magnet structure
NL236247A (en) * 1958-02-25
US2985792A (en) * 1958-10-02 1961-05-23 Hughes Aircraft Co Periodically-focused traveling-wave tube
US3106659A (en) * 1959-03-24 1963-10-08 Kearfott Company Inc Microwave tube construction
US3142008A (en) * 1960-03-18 1964-07-21 Gen Precision Inc Temperature compensation element for a traveling wave tube periodic array
NL271119A (en) * 1961-07-10
US3300678A (en) * 1963-05-15 1967-01-24 Capitol Records Traveling wave tube with plural pole piece assemblies defining a vacuum sealed tube body and particular collector structure
FR1522411A (en) * 1967-03-14 1968-04-26 Csf Compensation for the effects of temperature in magnetic focusers
GB1195805A (en) * 1967-06-29 1970-06-24 Nippon Electric Co Improvements in or relating to Magnetically Focussed Electron Tube Devices
US3755706A (en) * 1972-03-20 1973-08-28 Varian Associates Miniaturized traveling wave tube
US4137482A (en) * 1977-05-12 1979-01-30 Varian Associates, Inc. Periodic permanent magnet focused TWT
DE3015231A1 (en) * 1980-04-21 1981-10-22 Siemens AG, 1000 Berlin und 8000 München HIKING FIELD TUBES WITH PERIODIC-PERMANENT-MAGNETIC FOCUSING SYSTEM
US7230384B2 (en) * 2005-03-17 2007-06-12 Whittaker Corporation Robust RF interface in a TWT
CN114698219B (en) * 2020-12-25 2024-03-12 上海光链电子科技有限公司 Ionization source device for hydrogen atom laser and hydrogen atom laser

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL62817C (en) * 1940-05-04
BE521065A (en) * 1952-07-01
US2741718A (en) * 1953-03-10 1956-04-10 Sperry Rand Corp High frequency apparatus

Also Published As

Publication number Publication date
US2843775A (en) 1958-07-15

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