GB856117A - Improvements in or relating to electrostatic focussing devices for electron beams - Google Patents

Improvements in or relating to electrostatic focussing devices for electron beams

Info

Publication number
GB856117A
GB856117A GB1311958A GB1311958A GB856117A GB 856117 A GB856117 A GB 856117A GB 1311958 A GB1311958 A GB 1311958A GB 1311958 A GB1311958 A GB 1311958A GB 856117 A GB856117 A GB 856117A
Authority
GB
United Kingdom
Prior art keywords
helix
periodic structure
travelling
tubular member
plate
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
GB1311958A
Inventor
Harold Alexander Cecil Hogg
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.)
General Electric Co PLC
Original Assignee
General Electric Co 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
Priority to NL238482D priority Critical patent/NL238482A/xx
Priority to NL101405D priority patent/NL101405C/xx
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB13117/58A priority patent/GB895556A/en
Priority to GB1311958A priority patent/GB856117A/en
Priority to US808206A priority patent/US2973453A/en
Priority to FR793116A priority patent/FR1222296A/en
Priority to FR793119A priority patent/FR1222297A/en
Priority to US830294A priority patent/US3043984A/en
Publication of GB856117A publication Critical patent/GB856117A/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
    • H01J23/083—Electrostatic focusing arrangements

Landscapes

  • Particle Accelerators (AREA)

Abstract

856,117. Travelling-wave tubes. GENERAL ELECTRIC CO. Ltd. April 20, 1959 [April 24, 1958], No. 13119/58. Class 39(1). An electron beam focusing structure particularly for a travelling-wave tube consists of a positive periodic structure 4, Fig. 4 positioned between a pair of negative plates 5, and 6, plate 5 being slightly more negative than plate 6. The strip beam 20 follows the undulatory path shown with one set of peaks being disposed in the slots in the periodic structure. Two series of pins 15, Fig. 2, extending through the slots of the periodic structure may be provided on the plate 5 to prevent lateral dispersion of the beam. The plates 5, 6 form the ridges of a ridged rectangular wave-guide 1. The travelling-wave tube described is of the backwardwave type. The elements of the periodic structure may be the turns of a helix, the teeth of one or more comb-like structures, or the rungs of a ladder. With a helix structure, a rod or tubular member is provided within the helix and a tubular member outside it. The beam is annular and travels in the space between the helix and one of the tubular member.
GB1311958A 1958-04-24 1958-04-24 Improvements in or relating to electrostatic focussing devices for electron beams Expired GB856117A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NL238482D NL238482A (en) 1958-04-24
NL101405D NL101405C (en) 1958-04-24
GB13117/58A GB895556A (en) 1958-04-24 1958-04-24 Improvements in or relating to travelling wave tubes
GB1311958A GB856117A (en) 1958-04-24 1958-04-24 Improvements in or relating to electrostatic focussing devices for electron beams
US808206A US2973453A (en) 1958-04-24 1959-04-22 Travelling wave tubes
FR793116A FR1222296A (en) 1958-04-24 1959-04-24 Electrostatic concentration device
FR793119A FR1222297A (en) 1958-04-24 1959-04-24 Traveling wave tubes
US830294A US3043984A (en) 1958-04-24 1959-07-29 Travelling wave tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1311958A GB856117A (en) 1958-04-24 1958-04-24 Improvements in or relating to electrostatic focussing devices for electron beams

Publications (1)

Publication Number Publication Date
GB856117A true GB856117A (en) 1960-12-14

Family

ID=10017174

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1311958A Expired GB856117A (en) 1958-04-24 1958-04-24 Improvements in or relating to electrostatic focussing devices for electron beams

Country Status (1)

Country Link
GB (1) GB856117A (en)

Similar Documents

Publication Publication Date Title
ES455017A1 (en) Method of manufacturing a color display tube shadow mask
GB856117A (en) Improvements in or relating to electrostatic focussing devices for electron beams
ATE26504T1 (en) FLAT ELECTRON BEAM TUBE USING A GAS DISCHARGE AS SOURCE OF ELECTRONS.
ES436870A1 (en) Cathode ray tube with electrostatic multipole focusing lens
US2231682A (en) Electron multiplier
GB894210A (en) Improvements in or relating to electrostatic electron beam focussing devices
ES473966A1 (en) Electron gun
US3914637A (en) Method and apparatus for focusing an electron beam
US2431507A (en) Electron multiplier
US2235016A (en) Electron discharge device
GB912407A (en) Parametric amplifier
US2912620A (en) Electronic valve amplifiers
JPS5663748A (en) Inline type electron gun electrode structure
US3217203A (en) Beam plate structure having suppressor grid characteristics
GB1536174A (en) Fast triplanar detector
SU428534A1 (en) ELECTRON-SEMICONDUCTOR NON-SYMMETRIC TRIGGER
GB1146546A (en) Improvements in or relating to electrostatically focussed travelling wave tubes
JPS57115752A (en) Ion detector for mass spectrograph
GB820885A (en) Improvements in control electrodes for gas-filled electric discharge devices
JPS6454649A (en) Electron emission element
JPS57163952A (en) Electron gun for braun tube
GB942383A (en) Electron-beam tubes
FRANCOIS et al. A solution to the problem of spontaneous deflection of the beam in twt's with low helix voltage(Tin oxide coating on helix of traveling wave tube for draining off stray charges causing beam deflection)
JPS57208037A (en) Ageing of cathode-ray tube
FR2341940A1 (en) Photoelectric tube with micro canal wafer - includes photocathode on input window and phosphorescent screen on output window