GB1048440A - Method and means for controlling the temperature of an electron beam tube - Google Patents

Method and means for controlling the temperature of an electron beam tube

Info

Publication number
GB1048440A
GB1048440A GB1538364A GB1538364A GB1048440A GB 1048440 A GB1048440 A GB 1048440A GB 1538364 A GB1538364 A GB 1538364A GB 1538364 A GB1538364 A GB 1538364A GB 1048440 A GB1048440 A GB 1048440A
Authority
GB
United Kingdom
Prior art keywords
section
temperature
tube
frequency
radio
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
GB1538364A
Inventor
Oskar Heil
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 GB1048440A publication Critical patent/GB1048440A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B9/00—Generation of oscillations using transit-time effects
    • H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
    • H03B9/04—Generation of oscillations using transit-time effects using discharge tubes using a klystron
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/32—Anodes
    • H01J19/36—Cooling of anodes
    • 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
    • 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
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0027—Mitigation of temperature effects

Landscapes

  • Microwave Tubes (AREA)

Abstract

1,048,440. Automatic temperature control. VARIAN ASSOCIATES. April 14, 1964, No. 15383/64. Heading G3R. [Also in Division H1] In an electron beam tube in which a radio frequency is determined by a section of the tube interacting with the beam, the beam is automatically deflected in dependence on the temperature of the section so as to vary the heating of the section and thereby maintain its temperature constant. In Fig. 1 (not shown), a floating drift tube klystron oscillator comprises an electron gun section 2, a radiofrequency section 3, and a collector section 4 united to form a unit which is evacuated. The electron gun section comprises an anode 8, a focussing electrode 9, and a cathode 12 insulated from each other and connected by leads (not shown) to conductors 21. Cathode 12 and its heating coil 16 are replaceable by separating welded sealing rings 23, 24 and removing a cap 22 of insulating-material. The radio frequency section comprises a resonant cavity 29 in which a drift tube 33 is located by vibrationless temperature-compensating spokes 34, and an output cavity 37 in which is located an output coupling loop 41. A metallic shell 42 of low heat conductivity couples the radio-frequency section to the collector section. To maintain the temperature of the radio-frequency section constant the output of a thermocouple associated with this section controls, through an amplifier 54, the electrostatic potential of an electrode 56 which varies the deflection of the electron beam to correct the temperature by altering the amount of the beam impinging on wall 38. Modifications are described in which deflection of the beam is electromagnetic instead of electrostatic, the electromagnet being either to one side of, or within, the path of the beam. Metallic shell 42 may be replaced by a metallised insulated member or a ceramic tube having metallised ends. In the latter case temperature is corrected by an electrostatic potential applied to collector 4 which is then insulated from the radiofrequency section. Temperature variations may alternatively be detected by the frequency variations they produce.
GB1538364A 1964-04-17 1964-04-14 Method and means for controlling the temperature of an electron beam tube Expired GB1048440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6404179A NL6404179A (en) 1964-04-17 1964-04-17

Publications (1)

Publication Number Publication Date
GB1048440A true GB1048440A (en) 1966-11-16

Family

ID=19789853

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1538364A Expired GB1048440A (en) 1964-04-17 1964-04-14 Method and means for controlling the temperature of an electron beam tube

Country Status (2)

Country Link
GB (1) GB1048440A (en)
NL (1) NL6404179A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5332947A (en) * 1992-05-13 1994-07-26 Litton Systems, Inc. Integral polepiece RF amplification tube for millimeter wave frequencies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5332947A (en) * 1992-05-13 1994-07-26 Litton Systems, Inc. Integral polepiece RF amplification tube for millimeter wave frequencies
US5534750A (en) * 1992-05-13 1996-07-09 Litton Systems, Inc. Integral polepiece magnetic focusing system having enhanced gain and transmission

Also Published As

Publication number Publication date
NL6404179A (en) 1965-10-18

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