GB933637A - Improvements in or relating to periodic magnetic focussing devices - Google Patents

Improvements in or relating to periodic magnetic focussing devices

Info

Publication number
GB933637A
GB933637A GB43208/60A GB4320860A GB933637A GB 933637 A GB933637 A GB 933637A GB 43208/60 A GB43208/60 A GB 43208/60A GB 4320860 A GB4320860 A GB 4320860A GB 933637 A GB933637 A GB 933637A
Authority
GB
United Kingdom
Prior art keywords
plates
blocks
periodic magnetic
travelling
dec
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
GB43208/60A
Inventor
John Nevil Rogers
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.)
Mi O Valve Co Ltd
Original Assignee
Mi O Valve Co 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 Mi O Valve Co Ltd filed Critical Mi O Valve Co Ltd
Priority to GB43208/60A priority Critical patent/GB933637A/en
Publication of GB933637A publication Critical patent/GB933637A/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
    • H01J23/0873—Magnetic focusing arrangements with at least one axial-field reversal along the interaction space, e.g. P.P.M. focusing

Landscapes

  • Surgical Instruments (AREA)

Abstract

933,637. Travelling-wave tubes. M-O VALVE CO. Ltd. Dec. 15, 1961 [Dec. 15, 1960], No. 43208/60. Class 39 (1). The periodic magnetic focusing system of a travelling-wave tube includes blocks 19 of permanently magnetized material disposed between the plates 14 projecting on either side of the rectangular waveguides 11, 18. The plates 14 and the further plates 3 form polepieces for the array of permanent magnets 1. End magnets are shown at 20. The system is mounted on a support tube 5 which has a central portion 6 of fibrous glass and metal end portions 7, 8. The complete assembly is mounted in an aluminium framework 26 which includes end blocks 32, 42 containing recesses into which the relevant magnetized blocks 19 and plates 14 fit. Adjustable holders for the discharge tube are shown at 47 and 53, the holder 47 including spring fingers 52.
GB43208/60A 1960-12-15 1960-12-15 Improvements in or relating to periodic magnetic focussing devices Expired GB933637A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB43208/60A GB933637A (en) 1960-12-15 1960-12-15 Improvements in or relating to periodic magnetic focussing devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB43208/60A GB933637A (en) 1960-12-15 1960-12-15 Improvements in or relating to periodic magnetic focussing devices

Publications (1)

Publication Number Publication Date
GB933637A true GB933637A (en) 1963-08-08

Family

ID=10427755

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43208/60A Expired GB933637A (en) 1960-12-15 1960-12-15 Improvements in or relating to periodic magnetic focussing devices

Country Status (1)

Country Link
GB (1) GB933637A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4036954A3 (en) * 2021-01-28 2022-12-07 Thales Travelling wave tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4036954A3 (en) * 2021-01-28 2022-12-07 Thales Travelling wave tube

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