GB922532A - Magnetic focusing systems for travelling-wave tubes - Google Patents

Magnetic focusing systems for travelling-wave tubes

Info

Publication number
GB922532A
GB922532A GB975659A GB975659A GB922532A GB 922532 A GB922532 A GB 922532A GB 975659 A GB975659 A GB 975659A GB 975659 A GB975659 A GB 975659A GB 922532 A GB922532 A GB 922532A
Authority
GB
United Kingdom
Prior art keywords
coils
coil
pair
field
auxiliary
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
GB975659A
Inventor
John Morland Winwood
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.)
Philips Components Ltd
Original Assignee
Mullard Ltd
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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB975659A priority Critical patent/GB922532A/en
Priority to DEN18032A priority patent/DE1115840B/en
Priority to FR821766A priority patent/FR1251700A/en
Publication of GB922532A publication Critical patent/GB922532A/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
    • 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

Landscapes

  • Particle Accelerators (AREA)

Abstract

922,532. Travelling wave tubes. MULLARD Ltd. Feb. 8, 1960 [March 20, 1959], No. 9756/59. Class 39 (1). A travelling wave tube has a magnetic focusing system comprising a main solenoid 1, Fig. 2, or permanent magnet to produce a longitudinal magnetic field and an auxiliary coil or coils 2A, 2B, 3A, 3B, providing an auxiliary focusing field substantially perpendicular to the main field so that the resulting field can be coaxially aligned with the travelling wave tube. There may be a single pair of coils intersecting the axis or two pairs of coils 2A, 2B, 3A, 3B arranged around the axis perpendicularly to one another. One coil of the pair or one coil of one pair can be omitted; in these cases the remaining coil or coil of the pair can be rotated as one of the adjustments. The other adjustment is separate variation of the current in each coil or each pair of coils by variable resistances in series with the coils. The auxiliary coils may be inside the solenoid. If a permanent magnet is used the magnetic yokes have a shielding effect with respect to the correcting field so the auxiliary coils are located within the yoke and magnet system.
GB975659A 1959-03-20 1959-03-20 Magnetic focusing systems for travelling-wave tubes Expired GB922532A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB975659A GB922532A (en) 1959-03-20 1959-03-20 Magnetic focusing systems for travelling-wave tubes
DEN18032A DE1115840B (en) 1959-03-20 1960-03-16 Magnetic focusing system for generating an at least approximately homogeneous magnetic field
FR821766A FR1251700A (en) 1959-03-20 1960-03-18 Magnetic focusing system for an elongated electron tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB975659A GB922532A (en) 1959-03-20 1959-03-20 Magnetic focusing systems for travelling-wave tubes

Publications (1)

Publication Number Publication Date
GB922532A true GB922532A (en) 1963-04-03

Family

ID=9878178

Family Applications (1)

Application Number Title Priority Date Filing Date
GB975659A Expired GB922532A (en) 1959-03-20 1959-03-20 Magnetic focusing systems for travelling-wave tubes

Country Status (2)

Country Link
DE (1) DE1115840B (en)
GB (1) GB922532A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637122A1 (en) * 1988-09-23 1990-03-30 Thomson Csf PATH CORRECTING DEVICE FOR ELECTRONIC TUBE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637122A1 (en) * 1988-09-23 1990-03-30 Thomson Csf PATH CORRECTING DEVICE FOR ELECTRONIC TUBE
EP0362021A1 (en) * 1988-09-23 1990-04-04 Thomson-Csf Fly-path correction device in an electron tube
US5032763A (en) * 1988-09-23 1991-07-16 Thomson-Csf Trajectory correcting device for electron tubes

Also Published As

Publication number Publication date
DE1115840B (en) 1961-10-26

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