JPS6427199A - Deflection magnet and exciter thereof - Google Patents
Deflection magnet and exciter thereofInfo
- Publication number
- JPS6427199A JPS6427199A JP18100287A JP18100287A JPS6427199A JP S6427199 A JPS6427199 A JP S6427199A JP 18100287 A JP18100287 A JP 18100287A JP 18100287 A JP18100287 A JP 18100287A JP S6427199 A JPS6427199 A JP S6427199A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- charged particle
- particle beam
- correction coils
- deflection
- 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.)
- Granted
Links
Landscapes
- Particle Accelerators (AREA)
Abstract
PURPOSE:To keep a deflection magnetic field uniform below a specified value and extend the storage life of a charged particle beam by arranging magnetic field correction coils on magnetic pole surfaces of iron cores located opposite to each other in a manner that the correction coils are located on both sides of a vacuum chamber. CONSTITUTION:Magnetic field correction coils 1 are placed on both sides of a vacuum chamber 3 for storing a charged particle beam 6 in a gap between magnetic poles 10a, 10b arranged inside an iron core 8 of a sectorial or semicircular shape. The upper and lower magnetic field correction coils 1a, 1b of the coil 1 are formed to have cross-sectional shapes symmetrical with respect to the orbit surface of the charged particle beam 6. With this constitution, a magnetic field is produced to offset nonuniform magnetic field of deflection magnetic field caused with a particle accelerating deflection magnet to keep the deflection magnetic field uniform below a specified value, reduce instability of the charged particle beam at the time of storing the charged particle beam and extend the storage life of the charged particle beam.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18100287A JP2511990B2 (en) | 1987-07-22 | 1987-07-22 | Deflection magnet and its excitation device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18100287A JP2511990B2 (en) | 1987-07-22 | 1987-07-22 | Deflection magnet and its excitation device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6427199A true JPS6427199A (en) | 1989-01-30 |
JP2511990B2 JP2511990B2 (en) | 1996-07-03 |
Family
ID=16093016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18100287A Expired - Lifetime JP2511990B2 (en) | 1987-07-22 | 1987-07-22 | Deflection magnet and its excitation device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2511990B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03220500A (en) * | 1990-01-24 | 1991-09-27 | Mitsubishi Electric Corp | Coil for electromagnet for deflection of charged particle |
JP2012119101A (en) * | 2010-11-30 | 2012-06-21 | Hitachi Ltd | Magnetic field controller and deflection electromagnet device |
JP5112571B1 (en) * | 2012-02-13 | 2013-01-09 | 三菱電機株式会社 | Septum electromagnet and particle beam therapy system |
-
1987
- 1987-07-22 JP JP18100287A patent/JP2511990B2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03220500A (en) * | 1990-01-24 | 1991-09-27 | Mitsubishi Electric Corp | Coil for electromagnet for deflection of charged particle |
JP2012119101A (en) * | 2010-11-30 | 2012-06-21 | Hitachi Ltd | Magnetic field controller and deflection electromagnet device |
JP5112571B1 (en) * | 2012-02-13 | 2013-01-09 | 三菱電機株式会社 | Septum electromagnet and particle beam therapy system |
Also Published As
Publication number | Publication date |
---|---|
JP2511990B2 (en) | 1996-07-03 |
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