SE317749B - - Google Patents

Info

Publication number
SE317749B
SE317749B SE1582065A SE1582065A SE317749B SE 317749 B SE317749 B SE 317749B SE 1582065 A SE1582065 A SE 1582065A SE 1582065 A SE1582065 A SE 1582065A SE 317749 B SE317749 B SE 317749B
Authority
SE
Sweden
Prior art keywords
magnets
klystron
pair
shunts
adjustable
Prior art date
Application number
SE1582065A
Inventor
W Schmidt
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of SE317749B publication Critical patent/SE317749B/xx

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

  • Particle Accelerators (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

1,103,888. Klystrons. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 8 Dec., 1965 [10 Dec., 1964], No. 52052/65. Heading H1D. The periodic permanent magnet focusing system of a multistage klystron includes soft magnetic shunts each of which has both a first and a second portion, the first portion being adjustable only in discrete steps, whereby to predetermine the range of variation of the second, continuously adjustable portion. Interposed between each pair of adjacent klystron cavities 6, Fig. 1, are unidirectional magnetic systems 4 each formed by four axially directed cylindrical permanent magnets 8 symmetrically disposed between a pair of apertured polepieces 10, to which they are connected by soft magnetic yokes 9. The coarse adjustment is provided by four strips of magnetically soft material, each bolted at its ends to the two polepieces, and each shunting one of the magnets 8 from which it is separated by a strip of aluminium, choice of the cross-section of the shunts and their separation from their corresponding magnets permitting adjustment to the voltage range of the klystron. Fine adjustment within the latter is provided by a pair of shunts in the form of plates 13, each mounted in a non-magnetic housing 17 between an adjacent pair of the magnets, and adjustable towards or away from the latter by rotation of corresponding screw spindles 14. A system of radially directed magnets 5 immediately precedes the collector 7 of the klystron.
SE1582065A 1964-12-10 1965-12-07 SE317749B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964P0035651 DE1491388B1 (en) 1964-12-10 1964-12-10 Klystron, preferably high-performance multi-chamber klystron, with at least one permanent magnet system with adjustable magnetic auxiliary connections

Publications (1)

Publication Number Publication Date
SE317749B true SE317749B (en) 1969-11-24

Family

ID=7374322

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1582065A SE317749B (en) 1964-12-10 1965-12-07

Country Status (4)

Country Link
DE (1) DE1491388B1 (en)
FR (1) FR1457174A (en)
GB (1) GB1103888A (en)
SE (1) SE317749B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681421A (en) * 1952-03-04 1954-06-15 Gen Electric Magnetic focusing structure for electron beams
DE1114595B (en) * 1959-12-11 1961-10-05 Mikrowellen Ges M B H Deutsche Permanent magnet system with oxide ceramic magnets for magnetron tubes

Also Published As

Publication number Publication date
DE1491388B1 (en) 1970-01-15
FR1457174A (en) 1966-10-28
GB1103888A (en) 1968-02-21

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