US3240982A - Beam collector electrode for high frequency tubes - Google Patents

Beam collector electrode for high frequency tubes Download PDF

Info

Publication number
US3240982A
US3240982A US218071A US21807162A US3240982A US 3240982 A US3240982 A US 3240982A US 218071 A US218071 A US 218071A US 21807162 A US21807162 A US 21807162A US 3240982 A US3240982 A US 3240982A
Authority
US
United States
Prior art keywords
bucket
collector
high frequency
fluid
collecting
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 - Lifetime
Application number
US218071A
Inventor
Robert S Symons
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
Application granted granted Critical
Publication of US3240982A publication Critical patent/US3240982A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01J19/74—Cooling arrangements
    • 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
    • H01J23/027—Collectors
    • H01J23/033—Collector cooling devices
    • 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
    • H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
    • H01J23/18—Resonators
    • H01J23/20—Cavity resonators; Adjustment or tuning thereof
    • 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
    • H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy
    • H01J23/40—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit
    • H01J23/48—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit for linking interaction circuit with coaxial lines; Devices of the coupled helices type
    • 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
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/08—Dielectric windows

Definitions

  • the present invention is a divisional application of my parent application U.S. Serial No. 832,402, filed August 6, 1959, and now issued as US. Patent No. 3,169,206 on February 9, 1965, and relates in general to high frequency tubes and more particularly to a novel high power, pulsed, UHF, broad band amplifier useful, for example, in applications as navigation and communication systems, as a driver for a linear accelerator, and the like.
  • the present invention encompasses two models of the novel high frequency high power klystron amplifier.
  • the first model comprises a UHF seven cavity variably tuned klystron amplifier having a 45% R.F. efficiency and providing a 3% onehalf power bandwidth tunable over a 12% full power range.
  • This tube is approximately nine feet long and including only the evacuated structure weighs approximately seven hundred pounds. The tube will deliver 8 megawatts peak RF. energy with an average power of approximately 30 kw.
  • T he other tube is a fixed tuned five cavity UHF klystron amplifier having a half power bandwidth of approximately 12% to 14% with an RF. efficiency of 32%.
  • This tube is approximately eleven feet in length and including only the evacuated structure weighs approximate- 1y 700 pounds. The tube will deliver a UHF frequency 8 to megawatts peak RF. power with an average RF. power of kw.
  • the principal object of the present invention is to provide an improved high frequency ldystron amplifier tube apparatus which is relatively simple of construction, relatively easy to handle, and which will have long operating life while delivering high peak and high average RF. power.
  • One feature of the present invention is the provision of an extremely lightweight high thermal capacity beam collector having high velocity coolant flow therethrough to enhance heat transfer therein.
  • FIG. 1 is a longitudinal view, partly in section, showing the multicavity klystron amplifier apparatus of the present invention
  • FIG. 2 is an enlarged foreshortened view of a portion of the structure of FIG. 1 delineated by line 22,
  • FIG. 2a is an enlarged cross section view of a portion of the structure of FIG. 2 delineated by line 2a2a,
  • FIG. 2b is an enlarged cross sectional view of a portion of the structure of FIG. 2 delineated by line 2b2b,
  • FIG. 3 is a detail persective view of a portion of the structure of FIG. 2, delineated by line 3-3.
  • the tube comprises an elongated tubular metallic envelope 1 having an electron gun assembly 2 at one end thereof for producing and directing the beam of electrons axially through the elongated vacuum envelope 1 to an electron collector assembly 3 mounted at the other end of the elongated amass? Patented Mar. 15, 1966 "ice envelope 1.
  • a plurality of cavity resonators 4 are provided between the cathode assembly 2 and the collector assembly 3 for successive electromagnetic interaction with the beam of electrons passable therethrough.
  • a beam focusing solenoid 5 envelopes the central portion of the tubes envelope for focusing the electron beam throughout the length of the tube apparatus.
  • the free end portion of the cathode assembly 2 is inserted within an oil tank 6 and sealed therewithin via suitable mating flanges provided on the tube envelope 1 and the oil tank 6.
  • the oil in the oil tank serves to prevent electrical breakdown across the high voltage anode to cathode insulator of the cathode assembly 2.
  • Electromagnetic energy which it is desired to have amplified by the tube is fed to the first cavity 4 of the tube via coaxial line 7 and input loop 8.
  • This RF. cr1- ergy serves to velocity modulate the beam, such velocity modulation being transformed into current density modulation as the beam travels down the length of the tube.
  • the current density modulation is further enhanced by successive cavities 4.
  • the current density modulation serves to excite the last or output cavity 4.
  • the greatly amplified RF. output energy is extracted from the output cavity 4 via a suitable coupling iris 10 and hollow waveguide 9.
  • the waveguide 9 is wrapped around the collector assembly 3.
  • the output RF. energy is extracted from. the waveguide 9 via a coaxial line 11 and thence fed via a doorknob transition 12, having a cylindrical wave permeable window 13 vacuum sealed therein, to an output rectangular waveguide 14.
  • a relatively thin wall hollow cylindrical collector bucket 91 is closed off at the far end thereof via a relatively thin transverse wall 92.
  • the collector bucket 91 is adapted to receive the beam therein over the interior side walls thereof for dissipating the kinetic energies of the electrons.
  • the collector bucket 91 including the end wall 92 is made of a good thermal conducting material as, for example, copper.
  • the exterior of the collector bucket is provided with a plurality of relatively shallow channels 93 as of .100" deep milled therein (see FIG. 3).
  • the channels 93 are arranged such that there is a ct of four parallel directed channels extending around the collector bucket 91 as indicated by the arrows. More specifically, four parallel channels pass longitudinally along one side of the bucket from the closed end thereof substantially to the open end thereof, thence circumferentially through approximately of arc, thence passing longitudinally back to the closed end and diametrically across the closed end of the bucket and back longitudinally along the side of the bucket substantially to the open end thereof, thence circumferentially through approximately 90 of arc and thence longitudinally along side of the bucket to the closed end thereof.
  • a plurality of parallel channels are employed to minimize turbulence in the flow of coolant.
  • the outside periphery of the channeled bucket 91 (see FIG. 2) is surrounded by a tightly fitting collector sleeve 94 thereby defining the coolant channels 93 between the milled out portions of the collector bucket 91 and the collector sleeve 94.
  • the milled end wall 92 of the collector 91 is covered over by a cover plate 95 (see FIG. 2) having diametrically opposed slots cut in the outside periphery thereof for allowing coolant to communicate with the set of four parallel channels directed longitudinally of the collector bucket 91.
  • a centrally bored cylindrical block 96 is provided at the open end thereof with an outwardly directed flange 97 for sealing about its periphery to the end of the collector sleeve 94 (see FIG. 2b).
  • the central bore of the cylin- 3 drical block 96 is provided with a longitudinally directed septum 98 sealed at one end to cover plate 95 thereby defining a coolant input manifold 99 and output manifold 101.
  • Manifolds 99 and 101 connect to suitable coolant tubes via openings 102 and 103 in the metallic block 96.
  • the configuration and arrangement of coolant channels 93 on the collector bucket 91 facilitates easy manifolding of the collector as the input and output channels are closely spaced at the same end of the collector.
  • maximum heat transfer to the flow of the coolant fluid is assured due to the high velocity flow of the coolant as of, for example, water.
  • the pattern of channel arrangement allows the close fiat end of the collector bucket 91 to be cooled without introducing excessive turbulence in the flow of coolant.
  • the particular channel pattern shown includes only 4 longitudinal passes along the collector bucket, the number of such longitudinal passes N may be increased in steps of two While increasing the number of transverse end passes N in steps of one, the transverse end passes falling on paral lel chords of the circular end wall 92.
  • N 2N +2.
  • the circumferal are between adjacent parallel channels sets is approximately 3 60/ N degrees.
  • the collector bucket 91 is supported from the tube body at the beam entrance thereto via the intermediary of an annular insulator 105 as of, for example, alumina ceramic (see FIG. 2a).
  • the insulator 105 is, in turn, secured within an annular metallic channel 106- as of, for example, copper which is brazed to an annular header 107.
  • the annular head 107 forms one pole piece of the solenoid and is made of a highly magnetic permeable material as of, for example, iron.
  • the iron pole piece 107 is copper plated as it also forms one Wall of the output cavity 4.
  • the other end of the collector bucket 91 (see FIG. 2b) is supported from a coaxially disposed collector support cylinder 108 as of, for example, stainless steel through the intermediaries of annular frame members 109 and annular insulator 111.
  • the other end of the collector support cylinder 108 is fixedly secured to the pole piece 107 as by, for example, welding. Insulators 105 and 111 serve to insulate the collector bucket 91 from the tube body such that the beam interception current on the tube body may be monitored as desired.
  • a high frequency tube apparatus including, means for producing and directing a beam of charged particles over a predetermined path longitudinally of the tube, means for collecting the beam at the terminating end of the beam path, means disposed along said beam path for producing successive electromagnetic interaction with the beam and for extracting high frequency Wave energy from said beam, a vacuum tight envelope enclosing the beam path, said beam collecting means including, a hollow beam collecting bucket closed at one end for receiving the charged particles of the beam along the interior wall surfaces thereof, said bucket having a shallow fluid coolant channel array on the outside surf-ace thereof, said channel passing array serving to pass fluid in a direction longitudinally along one side of said bucket from a first end substantially to a second end thereof N times, said channel array passing fluid across the closed end of said bucket N, times, and the pattern of said coolant channel array on said collector bucket satisfying the relationship N 2N +2, and means for confining the flow of fluid coolant to said channels whereby efficient cooling of said collector means is obtained in use.
  • a high frequency tube apparatus including, means for producing and directing a beam of charged particles over a predetermined path longitudinally of the tube, means for collecting the beam at the terminating end of the beam path, means disposed along said beam path for producing successive electromagnetic interaction with the beam and for extracting high frequency wave energy from said beam, a vacuum tight envelope enclosing the beam path, said beam collecting means including, a hollow beam collecting bucket closed at one end for receiving the charged particles of the beam along the interior wall surfaces thereof, said bucket having a shallow fluid coolant channel array 011 the outside surface thereof, said channel array comprising a subdivided main channel serving to pass coolant fluid in a direction longitudinally along one side of said bucket, said channel passing fluid in the reverse direction longitudinally along the side of said bucket in peripheral quadrature with the first channel, said channel also passing fluid across the closed end of said bucket to the opposite side of said bucket and thence down that side of the bucket longitudinally thereof, and thence back along the side of said bucket in a position which is in peripheral quadrature with the second and third longitudinal passes

Landscapes

  • Particle Accelerators (AREA)
  • Microwave Tubes (AREA)
  • Microwave Amplifiers (AREA)
  • Electron Beam Exposure (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Radiation-Therapy Devices (AREA)
  • Amplifiers (AREA)

Description

BEAM COLLECTOR ELECTRODE FOR HIGH FREQUENCY TUBES Original Filed Aug. 6, 1959 2 Sheets-Sheet 1 INVENTOR ROBERT S. SYMONS ATTORNEY March 15, 1966 SYMQNS 3,240,982
BEAM COLLECTOR ELECTRODE FOR HIGH FREQUENCY TUBES Original Filed Aug. 6, 1959 2 Sheets-Sheet z iii 1 W02 i 3.
IN VENTOR F 3 ROBERT s. SYMONS ATTORNEY United States Patent 3,240,982 BAM (ISL-HECTOR ELECTRSDE FUR HTGH FREQUENQY TUBES Robert d. Symons, Los Altos, Califi, assignor to Varian Associates, Palo Alto, Calif., a corporation of California riginal application Aug. 6, 1959, Ser. No. 832,403, now Patent No. 3,169,206, dated Feb. 9, 1965. Divided and this application Aug. 20, 1962, Ser. No. 218,071
2 Qiaims. (Ci. 315-538) The present invention is a divisional application of my parent application U.S. Serial No. 832,402, filed August 6, 1959, and now issued as US. Patent No. 3,169,206 on February 9, 1965, and relates in general to high frequency tubes and more particularly to a novel high power, pulsed, UHF, broad band amplifier useful, for example, in applications as navigation and communication systems, as a driver for a linear accelerator, and the like.
The present invention encompasses two models of the novel high frequency high power klystron amplifier. The first model comprises a UHF seven cavity variably tuned klystron amplifier having a 45% R.F. efficiency and providing a 3% onehalf power bandwidth tunable over a 12% full power range. This tube is approximately nine feet long and including only the evacuated structure weighs approximately seven hundred pounds. The tube will deliver 8 megawatts peak RF. energy with an average power of approximately 30 kw.
T he other tube is a fixed tuned five cavity UHF klystron amplifier having a half power bandwidth of approximately 12% to 14% with an RF. efficiency of 32%. This tube is approximately eleven feet in length and including only the evacuated structure weighs approximate- 1y 700 pounds. The tube will deliver a UHF frequency 8 to megawatts peak RF. power with an average RF. power of kw.
The principal object of the present invention is to provide an improved high frequency ldystron amplifier tube apparatus which is relatively simple of construction, relatively easy to handle, and which will have long operating life while delivering high peak and high average RF. power.
One feature of the present invention is the provision of an extremely lightweight high thermal capacity beam collector having high velocity coolant flow therethrough to enhance heat transfer therein.
Other features and advantages of the present invention will become apparent upon a perusal of the following specification taken in connection with the accompanying drawings wherein,
FIG. 1 is a longitudinal view, partly in section, showing the multicavity klystron amplifier apparatus of the present invention,
FIG. 2 is an enlarged foreshortened view of a portion of the structure of FIG. 1 delineated by line 22,
FIG. 2a is an enlarged cross section view of a portion of the structure of FIG. 2 delineated by line 2a2a,
FIG. 2b is an enlarged cross sectional view of a portion of the structure of FIG. 2 delineated by line 2b2b,
FIG. 3 is a detail persective view of a portion of the structure of FIG. 2, delineated by line 3-3.
Referring now to FIG. '1 there is shown a longitudinal partly cross sectional view of a high frequency high power multicavity klystron tube apparatus utilizing features of the present invention. More specifically, the tube comprises an elongated tubular metallic envelope 1 having an electron gun assembly 2 at one end thereof for producing and directing the beam of electrons axially through the elongated vacuum envelope 1 to an electron collector assembly 3 mounted at the other end of the elongated amass? Patented Mar. 15, 1966 "ice envelope 1. A plurality of cavity resonators 4 are provided between the cathode assembly 2 and the collector assembly 3 for successive electromagnetic interaction with the beam of electrons passable therethrough.
A beam focusing solenoid 5 envelopes the central portion of the tubes envelope for focusing the electron beam throughout the length of the tube apparatus. The free end portion of the cathode assembly 2 is inserted within an oil tank 6 and sealed therewithin via suitable mating flanges provided on the tube envelope 1 and the oil tank 6. The oil in the oil tank serves to prevent electrical breakdown across the high voltage anode to cathode insulator of the cathode assembly 2.
Electromagnetic energy which it is desired to have amplified by the tube is fed to the first cavity 4 of the tube via coaxial line 7 and input loop 8. This RF. cr1- ergy serves to velocity modulate the beam, such velocity modulation being transformed into current density modulation as the beam travels down the length of the tube. The current density modulation is further enhanced by successive cavities 4. The current density modulation serves to excite the last or output cavity 4. The greatly amplified RF. output energy is extracted from the output cavity 4 via a suitable coupling iris 10 and hollow waveguide 9. The waveguide 9 is wrapped around the collector assembly 3. The output RF. energy is extracted from. the waveguide 9 via a coaxial line 11 and thence fed via a doorknob transition 12, having a cylindrical wave permeable window 13 vacuum sealed therein, to an output rectangular waveguide 14.
Referring now to FIGS. 1, 2 and 3 there is shown the lightweight high thermal capacity collector feature of the present invention. More specifically, a relatively thin wall hollow cylindrical collector bucket 91 is closed off at the far end thereof via a relatively thin transverse wall 92. The collector bucket 91 is adapted to receive the beam therein over the interior side walls thereof for dissipating the kinetic energies of the electrons. The collector bucket 91 including the end wall 92 is made of a good thermal conducting material as, for example, copper. The exterior of the collector bucket is provided with a plurality of relatively shallow channels 93 as of .100" deep milled therein (see FIG. 3).
The channels 93 are arranged such that there is a ct of four parallel directed channels extending around the collector bucket 91 as indicated by the arrows. More specifically, four parallel channels pass longitudinally along one side of the bucket from the closed end thereof substantially to the open end thereof, thence circumferentially through approximately of arc, thence passing longitudinally back to the closed end and diametrically across the closed end of the bucket and back longitudinally along the side of the bucket substantially to the open end thereof, thence circumferentially through approximately 90 of arc and thence longitudinally along side of the bucket to the closed end thereof. A plurality of parallel channels are employed to minimize turbulence in the flow of coolant.
The outside periphery of the channeled bucket 91 (see FIG. 2) is surrounded by a tightly fitting collector sleeve 94 thereby defining the coolant channels 93 between the milled out portions of the collector bucket 91 and the collector sleeve 94. The milled end wall 92 of the collector 91 is covered over by a cover plate 95 (see FIG. 2) having diametrically opposed slots cut in the outside periphery thereof for allowing coolant to communicate with the set of four parallel channels directed longitudinally of the collector bucket 91.
A centrally bored cylindrical block 96 is provided at the open end thereof with an outwardly directed flange 97 for sealing about its periphery to the end of the collector sleeve 94 (see FIG. 2b). The central bore of the cylin- 3 drical block 96 is provided with a longitudinally directed septum 98 sealed at one end to cover plate 95 thereby defining a coolant input manifold 99 and output manifold 101. Manifolds 99 and 101 connect to suitable coolant tubes via openings 102 and 103 in the metallic block 96.
The configuration and arrangement of coolant channels 93 on the collector bucket 91 facilitates easy manifolding of the collector as the input and output channels are closely spaced at the same end of the collector. In addition, maximum heat transfer to the flow of the coolant fluid is assured due to the high velocity flow of the coolant as of, for example, water. Moreover, the pattern of channel arrangement allows the close fiat end of the collector bucket 91 to be cooled without introducing excessive turbulence in the flow of coolant. Although the particular channel pattern shown includes only 4 longitudinal passes along the collector bucket, the number of such longitudinal passes N may be increased in steps of two While increasing the number of transverse end passes N in steps of one, the transverse end passes falling on paral lel chords of the circular end wall 92. Thus the pattern is defined by the following relationship: N =2N +2. The circumferal are between adjacent parallel channels sets is approximately 3 60/ N degrees.
The collector bucket 91 is supported from the tube body at the beam entrance thereto via the intermediary of an annular insulator 105 as of, for example, alumina ceramic (see FIG. 2a). The insulator 105 is, in turn, secured within an annular metallic channel 106- as of, for example, copper which is brazed to an annular header 107. The annular head 107 forms one pole piece of the solenoid and is made of a highly magnetic permeable material as of, for example, iron. The iron pole piece 107 is copper plated as it also forms one Wall of the output cavity 4.
The other end of the collector bucket 91 (see FIG. 2b) is supported from a coaxially disposed collector support cylinder 108 as of, for example, stainless steel through the intermediaries of annular frame members 109 and annular insulator 111. The other end of the collector support cylinder 108 is fixedly secured to the pole piece 107 as by, for example, welding. Insulators 105 and 111 serve to insulate the collector bucket 91 from the tube body such that the beam interception current on the tube body may be monitored as desired.
Since many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
What is claimed is:
1. A high frequency tube apparatus including, means for producing and directing a beam of charged particles over a predetermined path longitudinally of the tube, means for collecting the beam at the terminating end of the beam path, means disposed along said beam path for producing successive electromagnetic interaction with the beam and for extracting high frequency Wave energy from said beam, a vacuum tight envelope enclosing the beam path, said beam collecting means including, a hollow beam collecting bucket closed at one end for receiving the charged particles of the beam along the interior wall surfaces thereof, said bucket having a shallow fluid coolant channel array on the outside surf-ace thereof, said channel passing array serving to pass fluid in a direction longitudinally along one side of said bucket from a first end substantially to a second end thereof N times, said channel array passing fluid across the closed end of said bucket N, times, and the pattern of said coolant channel array on said collector bucket satisfying the relationship N 2N +2, and means for confining the flow of fluid coolant to said channels whereby efficient cooling of said collector means is obtained in use.
2. A high frequency tube apparatus including, means for producing and directing a beam of charged particles over a predetermined path longitudinally of the tube, means for collecting the beam at the terminating end of the beam path, means disposed along said beam path for producing successive electromagnetic interaction with the beam and for extracting high frequency wave energy from said beam, a vacuum tight envelope enclosing the beam path, said beam collecting means including, a hollow beam collecting bucket closed at one end for receiving the charged particles of the beam along the interior wall surfaces thereof, said bucket having a shallow fluid coolant channel array 011 the outside surface thereof, said channel array comprising a subdivided main channel serving to pass coolant fluid in a direction longitudinally along one side of said bucket, said channel passing fluid in the reverse direction longitudinally along the side of said bucket in peripheral quadrature with the first channel, said channel also passing fluid across the closed end of said bucket to the opposite side of said bucket and thence down that side of the bucket longitudinally thereof, and thence back along the side of said bucket in a position which is in peripheral quadrature with the second and third longitudinal passes of said channel along said bucket, and means for confining the flow of fluid coolant to said channels whereby efiicient cooling of said collecting means is obtained in use.
References Cited by the Examiner UNITED STATES PATENTS 2,312,920 3/1943 Litton 3l336 X 2,440,245 4/ 1948 Chevigny 31321l X 2,843,795 7/1958 Bondley et al. 3l5-5.49 2,994,009 7/1961 Schmidt et al -3l312 X 3,104,338 9/1963 Symons 313-24 GEORGE N. WESTBY, Primary Examiner.
ROBERT SEGAL, Examiner.

Claims (1)

1. A HIGH FREQUENCY TUBE APPARATUS INCLUDING, MEANS FOR PRODUCING AND DIRECTING A BEAM OF CHARGED PARTICLES OVER A PREDETERMINED PATH LONGITUDINALLY OF THE TUBE, MEANS FOR COLLECTING THE BEAM AT THE TERMINATING END OF THE BEAM PATH, MEANS DISPOSED ALONG SAID BEAM PATH FOR PRODUCING SUCCESSIVE ELECTROMAGNETIC INTERACTION WITH THE BEAM AND FOR EXTRACTING HIGH FREQUENCY WAVE ENERGY FROM SAID BEAM, A VACUUM TIGHT ENVELOPE ENCLOSING THE BEAM PATH, SAID BEAM COLLECTING MEANS INCLUDING, A HOLLOW BEAM COLLECTING BUCKET CLOSED AT ONE END FOR RECEIVING THE CHARGED PARTICLES OF THE BEAM ALONG THE INTERIOR WALL SURFACES THEREOF, SAID BUCKET HAVING A SHALLOW FLUID COOLANT CHANNEL ARRAY ON THE OUTSIDE SURFACE THEREOF, SAID CHANNEL PASSING ARRAY SERVING TO PASS FLUID IN A DIRECTION LONGITUDINALLY ALONG ONE SIDE OF SAID BUCKET FROM A FIRST END SUBSTANTIALLY TO A SECOND END THEREOF N1 TIMES, SAID CHANNEL ARRAY PASSING FLUID ACROSS THE CLOSED END OF SAID BUCKET NT TIMES, AND THE PATTERN OF SAID COOLANT CHANNEL ARRAY ON SAID COLLECTOR BUCKET SATISFYING THE RELATIONSHIP N1=2NT+2, AND MEANS FOR CONFINING THE FLOW OF FLUID COOLANT TO SAID CHANNELS WHEREBY EFFICIENT COOLING OF SAID COLLECTOR MEANS TO OBTAINED IN USE.
US218071A 1959-08-06 1962-08-20 Beam collector electrode for high frequency tubes Expired - Lifetime US3240982A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US832402A US3169206A (en) 1959-08-06 1959-08-06 High frequency tube method and apparatus

Publications (1)

Publication Number Publication Date
US3240982A true US3240982A (en) 1966-03-15

Family

ID=25261536

Family Applications (5)

Application Number Title Priority Date Filing Date
US832402A Expired - Lifetime US3169206A (en) 1959-08-06 1959-08-06 High frequency tube method and apparatus
US218071A Expired - Lifetime US3240982A (en) 1959-08-06 1962-08-20 Beam collector electrode for high frequency tubes
US220327A Expired - Lifetime US3207943A (en) 1959-08-06 1962-08-29 High frequency tube method and apparatus
US220325A Expired - Lifetime US3310704A (en) 1959-08-06 1962-08-29 Output coupling circuit for microwave tube apparatus
US220326A Expired - Lifetime US3249794A (en) 1959-08-06 1962-08-29 High frequency tube method and apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US832402A Expired - Lifetime US3169206A (en) 1959-08-06 1959-08-06 High frequency tube method and apparatus

Family Applications After (3)

Application Number Title Priority Date Filing Date
US220327A Expired - Lifetime US3207943A (en) 1959-08-06 1962-08-29 High frequency tube method and apparatus
US220325A Expired - Lifetime US3310704A (en) 1959-08-06 1962-08-29 Output coupling circuit for microwave tube apparatus
US220326A Expired - Lifetime US3249794A (en) 1959-08-06 1962-08-29 High frequency tube method and apparatus

Country Status (3)

Country Link
US (5) US3169206A (en)
FR (1) FR1488952A (en)
GB (4) GB961964A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2224122A1 (en) * 1971-05-18 1972-11-30 Thomson Csf High frequency tube
WO2003049133A3 (en) * 2001-12-04 2004-02-19 E2V Tech Uk Ltd Electron collector

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3394283A (en) * 1959-12-16 1968-07-23 Varian Associates High frequency electron discharge device
US3305802A (en) * 1963-05-27 1967-02-21 Varian Associates Electron tube with resonator tuning by deformation of an internal tubular member
GB1077846A (en) * 1964-12-07 1967-08-02 English Electric Valve Co Ltd Improvements in or relating to travelling wave amplifier tubes
US3414757A (en) * 1965-10-07 1968-12-03 Varian Associates High power beam tube having improved beam collector and method of fabricating same
US3527976A (en) * 1966-09-29 1970-09-08 Gen Electric Log periodic electron discharge device
US3725721A (en) * 1971-05-17 1973-04-03 Varian Associates Apparatus for loading cavity resonators of tunable velocity modulation tubes
FR2153585A5 (en) * 1971-09-16 1973-05-04 Thomson Csf
JPS535110B2 (en) * 1972-10-25 1978-02-23
US4200820A (en) * 1978-06-30 1980-04-29 Varian Associates, Inc. High power electron beam gyro device
DE3014404C2 (en) * 1979-04-11 1985-04-18 Nippon Electric Co., Ltd., Tokio/Tokyo Lauffeldtube
US4333038A (en) * 1980-04-07 1982-06-01 Nippon Electric Co., Ltd. Traveling wave tube devices
US4800322A (en) * 1984-10-23 1989-01-24 Litton Systems, Inc. Broadband klystron cavity arrangement
US5521551A (en) * 1994-11-21 1996-05-28 Ferguson; Patrick E. Method for suppressing second and higher harmonic power generation in klystrons
JP2022138558A (en) * 2021-03-10 2022-09-26 キヤノン電子管デバイス株式会社 High frequency input coupler and waveguide
US11985756B2 (en) * 2021-10-20 2024-05-14 Applied Materials, Inc. Linear accelerator coil including multiple fluid channels

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2312920A (en) * 1942-02-07 1943-03-02 Int Standard Electric Corp Anode cooling jacket
US2440245A (en) * 1944-03-13 1948-04-27 Standard Telephones Cables Ltd Cooling of high-temperature bodies
US2843795A (en) * 1954-06-09 1958-07-15 Gen Electric Shielded waveguide window
US2994009A (en) * 1958-07-17 1961-07-25 Varian Associates High frequency tube apparatus
US3104338A (en) * 1960-06-27 1963-09-17 Varian Associates Ribbed collector for cooling klystrons

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735033A (en) * 1956-02-14 Traveling wave tube
US2899598A (en) * 1959-08-11 ginzton
US1905770A (en) * 1929-07-03 1933-04-25 Walker & Pratt Mfg Co Electric heating unit and method of manufacturing same
BE428065A (en) * 1937-05-13
US2291406A (en) * 1938-11-03 1942-07-28 Fernseh Ag Cathode ray tube with X-ray absorbing coating
US2433011A (en) * 1943-04-08 1947-12-23 Sperry Gyroscope Co Inc Ultra high frequency energy coupling
US2591910A (en) * 1945-09-10 1952-04-08 Emi Ltd Electron discharge amplifier device employing hollow resonator
US2774006A (en) * 1950-10-14 1956-12-11 Univ Leland Stanford Junior Travelling wave tube apparatus
US2797353A (en) * 1951-06-15 1957-06-25 Bell Telephone Labor Inc Traveling wave type electron discharge devices
US2701321A (en) * 1951-07-16 1955-02-01 Sperry Corp Adjustable magnetic focusing system for beam tubes
GB761702A (en) * 1953-06-12 1956-11-21 Philips Electrical Ind Ltd Improvements in or relating to x-ray tube windows
US2867746A (en) * 1953-12-14 1959-01-06 Eitel Mccullough Inc Electron tube apparatus
US2786981A (en) * 1954-05-18 1957-03-26 Gen Precision Lab Inc Broadband coaxial line to waveguide transition
GB804463A (en) * 1954-11-30 1958-11-19 Vickers Electrical Co Ltd Improvements relating to velocity modulated electron discharge devices
US2815467A (en) * 1954-12-23 1957-12-03 Varian Associates High frequency tube
US2853642A (en) * 1955-02-23 1958-09-23 Hughes Aircraft Co Traveling-wave tube
NL201813A (en) * 1955-03-18
US2944187A (en) * 1955-06-14 1960-07-05 Varian Associates Electron tube apparatus
NL214550A (en) * 1956-02-27
NL215519A (en) * 1956-03-30
US2892958A (en) * 1956-07-13 1959-06-30 High Voltage Engineering Corp Corrugated waveguide
US2955229A (en) * 1956-11-14 1960-10-04 Gen Electric Secondary emission suppression in electron beam tubes
NL233762A (en) * 1957-06-12
US2939995A (en) * 1958-05-19 1960-06-07 Bell Telephone Labor Inc Traveling wave tube
US2985791A (en) * 1958-10-02 1961-05-23 Hughes Aircraft Co Periodically focused severed traveling-wave tube
NL246406A (en) * 1958-12-29
US2994800A (en) * 1960-02-29 1961-08-01 Eitel Mccullough Inc High-power, high-frequency amplifier klystron tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2312920A (en) * 1942-02-07 1943-03-02 Int Standard Electric Corp Anode cooling jacket
US2440245A (en) * 1944-03-13 1948-04-27 Standard Telephones Cables Ltd Cooling of high-temperature bodies
US2843795A (en) * 1954-06-09 1958-07-15 Gen Electric Shielded waveguide window
US2994009A (en) * 1958-07-17 1961-07-25 Varian Associates High frequency tube apparatus
US3104338A (en) * 1960-06-27 1963-09-17 Varian Associates Ribbed collector for cooling klystrons

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2224122A1 (en) * 1971-05-18 1972-11-30 Thomson Csf High frequency tube
WO2003049133A3 (en) * 2001-12-04 2004-02-19 E2V Tech Uk Ltd Electron collector
US20050062381A1 (en) * 2001-12-04 2005-03-24 E 2V Technologies Limited Electron collector

Also Published As

Publication number Publication date
GB961964A (en) 1964-06-24
US3249794A (en) 1966-05-03
US3310704A (en) 1967-03-21
US3169206A (en) 1965-02-09
US3207943A (en) 1965-09-21
GB961961A (en) 1964-06-24
DE1541095B2 (en) 1972-11-23
GB961962A (en) 1964-06-24
FR1488952A (en) 1967-07-21
DE1541095A1 (en) 1970-07-30
GB961963A (en) 1964-06-24

Similar Documents

Publication Publication Date Title
US3240982A (en) Beam collector electrode for high frequency tubes
US2725499A (en) High frequency amplifying device
US2985791A (en) Periodically focused severed traveling-wave tube
US3755706A (en) Miniaturized traveling wave tube
US2680209A (en) High-frequency apparatus
US6486605B1 (en) Multibeam electronic tube with magnetic field for correcting beam trajectory
US3876901A (en) Microwave beam tube having an improved fluid cooled main body
US3317780A (en) Traveling wave tube apparatus
US4137482A (en) Periodic permanent magnet focused TWT
US3305742A (en) High frequency electron discharge device and cooling means therefor
US3227915A (en) Fluid cooling of hollow tuner and radio frequency probe in klystron
US3866085A (en) Collector pole piece for a microwave linear beam tube
US3070725A (en) Travelling wave amplifier
US3471739A (en) High frequency electron discharge device having an improved depressed collector
US3748513A (en) High frequency beam tube having an r.f. shielded and insulated collector
US3320471A (en) High power amplifier having a cooling fluid manifold attached to the slowwave structure
US3376463A (en) Crossed field microwave tube having toroidal helical slow wave structure formed by a plurality of spaced slots
US3582707A (en) Air cooled coaxial magnetron having an improved arrangement of cooling fins
US3436588A (en) Electrostatically focused klystron having cavities with common wall structures and reentrant focusing lens housings
US3374523A (en) High power electron tube apparatus
US3297906A (en) High frequency electron discharge device of the traveling wave type having an interconnected cell slow wave circuit with improved slot coupling
US2454031A (en) Electric discharge device of the magnetron type
US3240984A (en) High frequency apparatus
US3054925A (en) High power klystron tube apparatus
US3374390A (en) Traveling-wave tube having a slow-wave structure of the cloverleaf type wherein the height of the cloverleaf sections are tapered