GB1145072A - Improvements in and relating to magnetic focussng systems - Google Patents
Improvements in and relating to magnetic focussng systemsInfo
- Publication number
- GB1145072A GB1145072A GB1275966A GB1275966A GB1145072A GB 1145072 A GB1145072 A GB 1145072A GB 1275966 A GB1275966 A GB 1275966A GB 1275966 A GB1275966 A GB 1275966A GB 1145072 A GB1145072 A GB 1145072A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnets
- axis
- magnetic
- adjacent
- march
- 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
Landscapes
- Microwave Tubes (AREA)
Abstract
1,145,072. Discharge tubes. SIEMENS A.G. 23 March. 1966 [24 March, 1965], No. 12759/66. Heading H1D. A magnetic focusing system for focusing an electron beam along an axis, e.g. for a travelling wave tube, includes two sets of opposed rectangular permanent magnets arranged one either side of the axis with like poles adjacent the axis, the height of the magnets successively decreasing such that their distance from the axis increases steadily from one end of the system, except for one pair of magnets which are shortened to provide a recess 4 for the introduction of a coupling waveguide in a perpendicular direction, magnetic compensation being provided by further opposed magnets 5, having the same pole as the two sets adjacent the axis, and mounted both in line with the magnets bounding the recess, and also lying in the perpendicular direction; the outer poles of all the magnets are linked by a magnetically soft screening member 2 which extends beyond the shortest mag - net either, as shown, to an iris plate extending across the axis, or to a similar system having its magnets of the other polarity adjacent the axis, i.e. in the arrangement shown, the iris plate may be omitted. Temperature compensation may be provided by arranging highly temperature sensitive magnets in parallel with the compensating magnets.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES0096143 | 1965-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1145072A true GB1145072A (en) | 1969-03-12 |
Family
ID=7519849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1275966A Expired GB1145072A (en) | 1965-03-24 | 1966-03-23 | Improvements in and relating to magnetic focussng systems |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1491452B2 (en) |
| GB (1) | GB1145072A (en) |
| NL (1) | NL6602528A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100197677B1 (en) * | 1995-01-28 | 1999-06-15 | 윤종용 | Multibeam klystron |
-
1965
- 1965-03-24 DE DE19651491452 patent/DE1491452B2/en active Pending
-
1966
- 1966-02-25 NL NL6602528A patent/NL6602528A/xx unknown
- 1966-03-23 GB GB1275966A patent/GB1145072A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1491452B2 (en) | 1971-04-29 |
| NL6602528A (en) | 1966-09-26 |
| DE1491452A1 (en) | 1969-06-12 |
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