Design and use of pole face correction coils
Correction coils set on pole faces of a magnet can modify the first (α coils) or second (β coils) field indices. Thus α coils give an adjustment of the beam waist position while β coils keep aberrations to a minimum. Expressions of index variations are given as well as practical formulas for the cal...
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| Veröffentlicht in: | Nuclear instruments and methods in physics research 1981-01, Vol.186 (1), p.445-452 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Correction coils set on pole faces of a magnet can modify the first (α coils) or second (β coils) field indices. Thus α coils give an adjustment of the beam waist position while β coils keep aberrations to a minimum. Expressions of index variations are given as well as practical formulas for the calculation of conductor width. The wiring of these coils is illustrated. Applications are described separately. |
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| ISSN: | 0167-5087 1872-9606 |
| DOI: | 10.1016/0029-554X(81)90938-1 |