GB1066043A - Magnet arrangement for travelling wave tubes - Google Patents

Magnet arrangement for travelling wave tubes

Info

Publication number
GB1066043A
GB1066043A GB7253/65A GB725365A GB1066043A GB 1066043 A GB1066043 A GB 1066043A GB 7253/65 A GB7253/65 A GB 7253/65A GB 725365 A GB725365 A GB 725365A GB 1066043 A GB1066043 A GB 1066043A
Authority
GB
United Kingdom
Prior art keywords
field
travelling wave
straighteners
junction
magnet
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
GB7253/65A
Inventor
John Graham Armstrong
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB7253/65A priority Critical patent/GB1066043A/en
Priority to US498451A priority patent/US3373389A/en
Priority to DE19661564118 priority patent/DE1564118A1/en
Priority to FR49984A priority patent/FR1468449A/en
Priority to NL6602173A priority patent/NL6602173A/xx
Priority to BE676672D priority patent/BE676672A/xx
Publication of GB1066043A publication Critical patent/GB1066043A/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
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087—Magnetic focusing arrangements
    • H01J23/0876—Magnetic focusing arrangements with arrangements improving the linearity and homogeniety of the axial field, e.g. field straightener

Abstract

1,066,043. Travelling wave tubes. STANDARD TELEPHONES & CABLES Ltd. Feb. 19, 1965, No. 7253/65. Heading H1D. A magnetic focusing arrangement, e.g. for a travelling wave tube includes two hollow cylindrical longitudinally magnetized permanent magnets arranged in alignment end to end with like poles adjacent each other and field straighteners of ferromagnetic material having retentivity which is small compared to the magnet material positioned coaxially within each of the two magnets on either side of the junction or gap between them, the axial reluctance of the field straightener material being such that the reversal of magnetic field of the junction or gap is made more abrupt. The field straightener offers a low reluctance path to magnetic fields transverse the axis of the magnet. The field straighteners are formed by a wire helix of ferromagnetic material, e.g. iron which may be clad with copper and soldered to a supporting tube of brass.
GB7253/65A 1965-02-19 1965-02-19 Magnet arrangement for travelling wave tubes Expired GB1066043A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB7253/65A GB1066043A (en) 1965-02-19 1965-02-19 Magnet arrangement for travelling wave tubes
US498451A US3373389A (en) 1965-02-19 1965-10-20 Magnetic field straightener
DE19661564118 DE1564118A1 (en) 1965-02-19 1966-02-16 Focusing magnet
FR49984A FR1468449A (en) 1965-02-19 1966-02-17 Progressing wave tubes improvements
NL6602173A NL6602173A (en) 1965-02-19 1966-02-18
BE676672D BE676672A (en) 1965-02-19 1966-02-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7253/65A GB1066043A (en) 1965-02-19 1965-02-19 Magnet arrangement for travelling wave tubes

Publications (1)

Publication Number Publication Date
GB1066043A true GB1066043A (en) 1967-04-19

Family

ID=9829568

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7253/65A Expired GB1066043A (en) 1965-02-19 1965-02-19 Magnet arrangement for travelling wave tubes

Country Status (5)

Country Link
US (1) US3373389A (en)
BE (1) BE676672A (en)
DE (1) DE1564118A1 (en)
GB (1) GB1066043A (en)
NL (1) NL6602173A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924210A (en) * 1974-11-01 1975-12-02 Raytheon Co Field shaping magnet structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL187895B (en) * 1953-06-17 Feldmuehle Ag DEVICE FOR DEININKING FIBER SUSPENSIONS.
US2867745A (en) * 1953-10-07 1959-01-06 Bell Telephone Labor Inc Periodic magnetic focusing system
US2863086A (en) * 1954-02-09 1958-12-02 Bell Telephone Labor Inc Traveling wave tube

Also Published As

Publication number Publication date
DE1564118A1 (en) 1969-08-28
BE676672A (en) 1966-08-18
US3373389A (en) 1968-03-12
NL6602173A (en) 1966-08-22

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