GB783603A - Improvements in or relating to magnet arrangements - Google Patents
Improvements in or relating to magnet arrangementsInfo
- Publication number
- GB783603A GB783603A GB1402853A GB1402853A GB783603A GB 783603 A GB783603 A GB 783603A GB 1402853 A GB1402853 A GB 1402853A GB 1402853 A GB1402853 A GB 1402853A GB 783603 A GB783603 A GB 783603A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnets
- arrangement
- axial
- magnet
- centre
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Prostheses (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
783,603. Magnets; magnetic structures. MULLARD RADIO VALVE CO., Ltd. Feb. 22, 1954 [May 19, 1953], No. 14028/53. Classes 35 and 38 (2). [Also in Group XL (a)] A magnet arrangement suitable for use with an electron-discharge tube using orthogonal scanning such as a television camera consists of a plurality of annular permanent magnets 10 arranged coaxially and axially spaced from one another by non-magnetic spacing means 11, each magnet being magnetized parallel to its axis and all magnets being disposed with like poles facing the same direction to produce a unidirectional generally axial regular field over a length large compared with the axial dimension of any magnet. By regular is meant a field whose value either changes linearly with axial distance between the ends of the arrangement, or is uniform in the axial direction; the latter may be provided as shown by having all the magnets of similar dimensions but disposed axially closer to each other at the centre than at the ends of the arrangement, or, not shown, by using axially equispaced magnets whose axial lengths and/or external diameters are greater at the centre than at the ends. The arrangement also provides within limits a uniform radial field, and the magnets may be of the material described in Specification 708,127. Specification 576,369 also is referred to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1402853A GB783603A (en) | 1953-05-19 | 1953-05-19 | Improvements in or relating to magnet arrangements |
| FR1100721D FR1100721A (en) | 1953-05-19 | 1954-05-17 | Device for generating a magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1402853A GB783603A (en) | 1953-05-19 | 1953-05-19 | Improvements in or relating to magnet arrangements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB783603A true GB783603A (en) | 1957-09-25 |
Family
ID=26250199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1402853A Expired GB783603A (en) | 1953-05-19 | 1953-05-19 | Improvements in or relating to magnet arrangements |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1100721A (en) |
| GB (1) | GB783603A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2687840A1 (en) * | 1992-02-21 | 1993-08-27 | Thomson Tubes Electroniques | HYPERFREQUENCY TUBE WITH ALLEGE FOCUS. |
| CN109964288A (en) * | 2016-10-05 | 2019-07-02 | 斯伦贝谢技术有限公司 | Magnet design |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2949603B1 (en) * | 2009-08-28 | 2017-02-03 | Commissariat A L'energie Atomique | MAGNIFICENT AXISYMETRIC STRUCTURE INDUCING A LONGITUDINAL HOMOGENEOUS FIELD IN ITS CENTER |
-
1953
- 1953-05-19 GB GB1402853A patent/GB783603A/en not_active Expired
-
1954
- 1954-05-17 FR FR1100721D patent/FR1100721A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2687840A1 (en) * | 1992-02-21 | 1993-08-27 | Thomson Tubes Electroniques | HYPERFREQUENCY TUBE WITH ALLEGE FOCUS. |
| CN109964288A (en) * | 2016-10-05 | 2019-07-02 | 斯伦贝谢技术有限公司 | Magnet design |
| US11501901B2 (en) | 2016-10-05 | 2022-11-15 | Schlumberger Technology Corporation | Magnet design |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1100721A (en) | 1955-09-23 |
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