EP0624893A3 - Magnet arrangements. - Google Patents
Magnet arrangements. Download PDFInfo
- Publication number
- EP0624893A3 EP0624893A3 EP94302505A EP94302505A EP0624893A3 EP 0624893 A3 EP0624893 A3 EP 0624893A3 EP 94302505 A EP94302505 A EP 94302505A EP 94302505 A EP94302505 A EP 94302505A EP 0624893 A3 EP0624893 A3 EP 0624893A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnet arrangements
- arrangements
- 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.)
- Withdrawn
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0273—Magnetic circuits with PM for magnetic field generation
- H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2223/00—Details of transit-time tubes of the types covered by group H01J2225/00
- H01J2223/02—Electrodes; Magnetic control means; Screens
- H01J2223/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
- H01J2223/087—Magnetic focusing arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2225/00—Transit-time tubes, e.g. Klystrons, travelling-wave tubes, magnetrons
- H01J2225/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
- H01J2225/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2225/00—Transit-time tubes, e.g. Klystrons, travelling-wave tubes, magnetrons
- H01J2225/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9309738 | 1993-05-12 | ||
GB939309738A GB9309738D0 (en) | 1993-05-12 | 1993-05-12 | Magnet arrangements |
GB9317434 | 1993-08-03 | ||
GB9317434A GB2278231A (en) | 1993-05-12 | 1993-08-03 | Magnet arrangements |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0624893A2 EP0624893A2 (en) | 1994-11-17 |
EP0624893A3 true EP0624893A3 (en) | 1995-10-11 |
Family
ID=26302885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94302505A Withdrawn EP0624893A3 (en) | 1993-05-12 | 1994-04-08 | Magnet arrangements. |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0624893A3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113471037B (en) * | 2021-06-30 | 2022-05-13 | 电子科技大学 | Focusing system is annotated to integration banding |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3013173A (en) * | 1959-02-16 | 1961-12-12 | Varian Associates | Magnetic beam focusing method and apparatus |
GB2046011A (en) * | 1979-04-03 | 1980-11-05 | Thomson Csf | Periodic permanent magnet focussing systems |
US5014028A (en) * | 1990-04-25 | 1991-05-07 | The United States Of America As Represented By The Secretary Of The Army | Triangular section permanent magnetic structure |
USRE33736E (en) * | 1987-08-24 | 1991-11-05 | The United States Of America As Represented By The Secretary Of The Army | Periodic permanent magnet structure with increased useful field |
-
1994
- 1994-04-08 EP EP94302505A patent/EP0624893A3/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3013173A (en) * | 1959-02-16 | 1961-12-12 | Varian Associates | Magnetic beam focusing method and apparatus |
GB2046011A (en) * | 1979-04-03 | 1980-11-05 | Thomson Csf | Periodic permanent magnet focussing systems |
USRE33736E (en) * | 1987-08-24 | 1991-11-05 | The United States Of America As Represented By The Secretary Of The Army | Periodic permanent magnet structure with increased useful field |
US5014028A (en) * | 1990-04-25 | 1991-05-07 | The United States Of America As Represented By The Secretary Of The Army | Triangular section permanent magnetic structure |
Non-Patent Citations (2)
Title |
---|
J. P. CLARKE AND H. A. LEUPOLD: "Field enhancement in travelling wave tubes with tapered pole pieces", JOURNAL OF APPLIED PHYSICS, vol. 63, no. 8, Part IIB, 15 April 1988 (1988-04-15), WOODBURY, NY, USA, pages 3991 - 3992 * |
R. J. PARKER: "Advances in permanent magnetism", WILEY &SONS, NEW YORK, USA * |
Also Published As
Publication number | Publication date |
---|---|
EP0624893A2 (en) | 1994-11-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR IT |
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PUAL | Search report despatched |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19960412 |