GB875979A - Improvements in or relating to means for positioning electron beams in electron discharge devices - Google Patents
Improvements in or relating to means for positioning electron beams in electron discharge devicesInfo
- Publication number
- GB875979A GB875979A GB20635/60A GB2063560A GB875979A GB 875979 A GB875979 A GB 875979A GB 20635/60 A GB20635/60 A GB 20635/60A GB 2063560 A GB2063560 A GB 2063560A GB 875979 A GB875979 A GB 875979A
- Authority
- GB
- United Kingdom
- Prior art keywords
- parts
- helix
- tube
- surrounding
- travelling wave
- 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
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/54—Arrangements for centring ray or beam
Landscapes
- Microwave Tubes (AREA)
Abstract
875,979. Travelling wave tubes. TELEFUNKEN G.m.b.H. June 13, 1960 [June 11, 1959], No. 20635/60. Class 39(1). An electron beam is positioned in a travelling wave or other electron beam tube -by a permanently magnetised or magnetisable member disposed in the vicinity of means for producing a magnetic focusing field the member surrounding the tube envelope and being formed in a plurality of parts the boundaries between the parts being in the axial direction of the beam the parts being relatively movable axially and are movable together around the periphery of the envelope. As shown the positioning means comprises two semi-cylinders 5, 6, Fig. 2 surrounding the gun of the travelling wave tube which has a helix slow wave structure. The semicylinders are magnetised by the fringe field of the focusing coil surrounding the helix and centre the beam on the axis of the helix. The ferromagnetic member may be in more than two parts.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET16803A DE1090777B (en) | 1959-06-11 | 1959-06-11 | Magnetic correction device for electron beam tubes, especially traveling wave tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB875979A true GB875979A (en) | 1961-08-30 |
Family
ID=7548357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20635/60A Expired GB875979A (en) | 1959-06-11 | 1960-06-13 | Improvements in or relating to means for positioning electron beams in electron discharge devices |
Country Status (3)
Country | Link |
---|---|
US (1) | US3052808A (en) |
DE (1) | DE1090777B (en) |
GB (1) | GB875979A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114005720A (en) * | 2021-11-09 | 2022-02-01 | 北京航空航天大学 | Terahertz traveling wave tube slow wave focusing integrated structure and manufacturing method thereof |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1277450B (en) * | 1962-09-22 | 1968-09-12 | Telefunken Patent | Permanent magnetic focusing system for the bundled guidance of the electron beam of a traveling wave tube |
US3331984A (en) * | 1963-01-22 | 1967-07-18 | Varian Associates | Magnetic field shaping cylinder for confined flow electron guns |
US3497745A (en) * | 1967-02-20 | 1970-02-24 | Zenith Radio Corp | Alignment magnet for cathode-ray tube |
US3887830A (en) * | 1973-09-07 | 1975-06-03 | Raytheon Co | Cathode ray tube with magnetic beam alignment means |
JPS5868846A (en) * | 1981-10-07 | 1983-04-23 | バリアン・アソシエイツ・インコ−ポレイテツド | Linear beam microwave tube focused by permanent magnet |
FR2641899A1 (en) * | 1989-01-17 | 1990-07-20 | Thomson Tubes Electroniques | ELECTRON GUN WITH AN ACTIVE DEVICE PRODUCING A MAGNETIC FIELD IN THE VICINITY OF THE CATHODE |
EP4071782A4 (en) * | 2019-12-03 | 2023-12-13 | Nec Network And Sensor Systems, Ltd. | Microwave tube and method for controlling same |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2188579A (en) * | 1933-05-27 | 1940-01-30 | Loewe Radio Inc | Cathode ray tube, more particularly for television purposes |
US2442975A (en) * | 1943-08-31 | 1948-06-08 | Rca Corp | Focusing system |
US2431077A (en) * | 1943-08-31 | 1947-11-18 | Rca Corp | Cathode-ray tube with revolving magnets and adjustable sleeve |
NL182200B (en) * | 1952-10-25 | Rustenburg Platinum Mines Ltd | PROCESS FOR THE PREPARATION OF A MEDICINAL PRODUCT FOR THE TREATMENT OF CANCER BASED ON A PLATINACO INATION COMPOUND AND PROCEDURE FOR PREPARING THE ACTIVE COMPOUND. |
-
1959
- 1959-06-11 DE DET16803A patent/DE1090777B/en active Pending
-
1960
- 1960-05-25 US US31751A patent/US3052808A/en not_active Expired - Lifetime
- 1960-06-13 GB GB20635/60A patent/GB875979A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114005720A (en) * | 2021-11-09 | 2022-02-01 | 北京航空航天大学 | Terahertz traveling wave tube slow wave focusing integrated structure and manufacturing method thereof |
Also Published As
Publication number | Publication date |
---|---|
US3052808A (en) | 1962-09-04 |
DE1090777B (en) | 1960-10-13 |
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