GB1019743A - An electron beam tube - Google Patents

An electron beam tube

Info

Publication number
GB1019743A
GB1019743A GB33165/62A GB3316562A GB1019743A GB 1019743 A GB1019743 A GB 1019743A GB 33165/62 A GB33165/62 A GB 33165/62A GB 3316562 A GB3316562 A GB 3316562A GB 1019743 A GB1019743 A GB 1019743A
Authority
GB
United Kingdom
Prior art keywords
polepiece
tube
cathode
posts
grooves
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
GB33165/62A
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.)
Varian Medical Systems Inc
Original Assignee
Eitel Mccullough 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 Eitel Mccullough Inc filed Critical Eitel Mccullough Inc
Publication of GB1019743A publication Critical patent/GB1019743A/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
    • H01J23/06—Electron or ion guns
    • H01J23/065—Electron or ion guns producing a solid cylindrical beam
    • 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
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/029—Schematic arrangements for beam forming

Landscapes

  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Microwave Tubes (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

1,019,743. Velocity-modulated tubes. EITEL-McCULLOUGH Inc. Aug. 29, 1962 [Aug. 31 1961], No. 33165/62. Heading H1D. In an electron beam tube in which a magnetic field is established between first and second polepieces adjacent the electron gun and beam collector electrode, respectively, the magnetic flux leakage in the gun cathode region is controlled by the provision of an auxiliary polepiece 81 which produces lines of magnetic force threading the cathode 63 and conforming to the desired trajectories 44 of emitted electrons. As shown, a klystron amplifier includes a polepiece 18 provided with a brass insert 27 which centres the tube neck 29. Polepiece 18 has a transversely movable extension 42 which may be adjusted into a desired correlation with auxiliary polepiece 81 to control the passage of the beam into drift tube 29. Polepiece 81 is secured to detachably mounted cathode support 53, and is heat-shielded from cathode heater 67. Focusing electrode 73 is mounted on a support 71 apertured to constitute a heat dam. Modulating anode 51 is adjustably mounted on a plate 48 sealed between dielectric envelope portions 47, 52. The first and second polepieces adjacent the ends of the tube are connected by posts providing low reluctance paths for the magnetic flux generated by coils mounted on the posts. The magnetic frame is completed by doors, pivotally-mounted on the posts to allow access to the interior, and also providing low reluctance paths, Figs. 1 and 2 (not shown). The beam collector electrode 86, Fig. 4, has spiral grooves 87 in its outer surface closed by an inner shell 88 which is surrounded by a spaced outer shell 102. Both shells 88, 102 are detachably mounted to permit cleaning of grooves 87, and 0-ring seals 97, 101 are provided to guide coolant fluid from inlet 109 via aperture 92, grooves 87 and the annular space between shells 88, 102, to outlet 112.
GB33165/62A 1961-08-31 1962-08-29 An electron beam tube Expired GB1019743A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US135323A US3259790A (en) 1961-08-31 1961-08-31 Beam tube and magnetic circuit therefor

Publications (1)

Publication Number Publication Date
GB1019743A true GB1019743A (en) 1966-02-09

Family

ID=22467579

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33165/62A Expired GB1019743A (en) 1961-08-31 1962-08-29 An electron beam tube

Country Status (5)

Country Link
US (1) US3259790A (en)
CH (1) CH427051A (en)
DE (1) DE1294567B (en)
GB (1) GB1019743A (en)
NL (1) NL282676A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3331984A (en) * 1963-01-22 1967-07-18 Varian Associates Magnetic field shaping cylinder for confined flow electron guns
US3626230A (en) * 1969-10-02 1971-12-07 Varian Associates Thermally conductive electrical insulator for electron beam collectors
US3679929A (en) * 1970-12-02 1972-07-25 Litton Systems Inc Ceramic ball insulated depressed collector for a microwave tube
DE2154485C3 (en) * 1971-11-02 1974-04-11 Siemens Ag, 1000 Berlin U. 8000 Muenchen High performance disc tube for maximum frequencies
US3866085A (en) * 1973-12-03 1975-02-11 Varian Associates Collector pole piece for a microwave linear beam tube
US3886384A (en) * 1974-02-04 1975-05-27 Raytheon Co Collector electrode
GB1538430A (en) * 1975-04-03 1979-01-17 English Electric Valve Co Ltd Travelling wave tubes
US4555646A (en) * 1981-10-07 1985-11-26 Varian Associates, Inc. Adjustable beam permanent-magnet-focused linear-beam microwave tube
CA2071099C (en) * 1991-06-14 1998-09-15 Masaki Tsuneoka Gyrotron apparatus having vibration absorbing means
GB2423186B (en) * 2005-02-11 2009-06-03 E2V Tech Magnetic assembly for a linear beam tube
US8872057B2 (en) * 2006-03-15 2014-10-28 Communications & Power Industries Llc Liquid cooling system for linear beam device electrodes
FR3128353A1 (en) 2021-10-14 2023-04-21 Thales Electronic system equipped with a coolant circuit

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE442068A (en) * 1940-07-03
USRE25070E (en) * 1949-08-12 1961-10-31 Electron discharge devices
US2687490A (en) * 1949-09-22 1954-08-24 Sperry Corp High-frequency beam tube device
NL89376C (en) * 1950-06-17
DE893990C (en) * 1951-10-02 1953-10-22 Telefunken Gmbh Focuser for running field tubes
US2879440A (en) * 1953-07-27 1959-03-24 Varian Associates High frequency tube
US2928972A (en) * 1954-04-09 1960-03-15 Varian Associates Electron tube apparatus
US2936394A (en) * 1955-07-18 1960-05-10 Hughes Aircraft Co Electron gun
GB853668A (en) * 1956-03-06 1960-11-09 Eitel Mccullough Inc Electron tube apparatus
US2991391A (en) * 1957-07-24 1961-07-04 Varian Associates Electron beam discharge apparatus
US2909691A (en) * 1958-10-17 1959-10-20 Heil Oskar Electron guns with magnetic focusing
US3104338A (en) * 1960-06-27 1963-09-17 Varian Associates Ribbed collector for cooling klystrons
US3155866A (en) * 1961-03-14 1964-11-03 Bell Telephone Labor Inc Magnetic focusing structure for traveling wave tubes

Also Published As

Publication number Publication date
US3259790A (en) 1966-07-05
NL282676A (en)
CH427051A (en) 1966-12-31
DE1294567B (en) 1969-05-08

Similar Documents

Publication Publication Date Title
US2687490A (en) High-frequency beam tube device
GB1019743A (en) An electron beam tube
GB779733A (en) Improvements relating to electron-discharge devices
GB843648A (en) Ion source
GB891983A (en) Linear particle accelerator apparatus
GB936137A (en) Ion source with space charge neutralization
GB1395201A (en) Magnetic lenses
GB1101293A (en) High output duoplasmatron-type ion source
US3025429A (en) Ion magnetron
US4387323A (en) Permanent magnet structure for linear-beam electron tubes
GB1467487A (en) X-ray tubes
US2936394A (en) Electron gun
US3344306A (en) Klystron having temperature modifying means for the electrodes therein and the focusing magnetic circuit
GB1247501A (en) Ion-getter vacuum pump
US3706002A (en) Electron gun
US3388281A (en) Electron beam tube having a collector electrode insulatively supported by a cooling chamber
US3408526A (en) Ion source having an annular permanent magnet
GB1012040A (en) Apparatus for producing a narrow high-intensity beam of charged particles
US3843904A (en) Magnetic field geometry for crossed-field devices
ES8306305A1 (en) Neutron accelerator tube having improved ionization section
US3522469A (en) Magnetic beam focusing structure for a traveling wave tube employing magnetic shunts between the pole pieces and the emitter
GB1184532A (en) Improvements in and relating to High Vacuum Electronic Valves.
GB790405A (en) Velocity-modulated electron tube apparatus
GB748945A (en) Improvements in or relating to electron discharge tubes
GB1383128A (en) Ion source