Synchrobetatron-coupling effects in alternating-phase-focusing linacs
Physical Review E 48 巻 6 号
4689-4698 頁
1993-12 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Synchrobetatron-coupling effects in alternating-phase-focusing linacs
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| 作成者 |
Cheng Weh-Hao
Gluckstern Robert L.
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| 収録物名 |
Physical Review E
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| 巻 | 48 |
| 号 | 6 |
| 開始ページ | 4689 |
| 終了ページ | 4698 |
| 抄録 |
Simultaneous longitudinal and transverse focusing can be obtained in a drift tube linac by alternating the sign of the synchronous phase. It is found both theoretically and numerically that, in the alternating-phase-focused (APF) linac with a symmetric synchronous phase sequence, the lowest-order resonance due to the synchrobetatron coupling naturally occurs, causing significant emittance transfer between the longitudinal and transverse motions. Equations for the averaged APF motion are derived to investigate the coupling effect. Two approximate invariants are obtained. Results from computer simulations based on a modified parmila code yield good agreement with the formulas for the invariant and tune shift derived from the theory. We then suggest a way to move the parameters away from the lowest-order resonance. Simulation results for the effect of space charge on the emittance exchange along with the synchrobetatron coupling are briefly discussed.
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| NDC分類 |
物理学 [ 420 ]
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
The American Physical Society
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| 発行日 | 1993-12 |
| 権利情報 |
Copyright (c) 1993 The American Physical Society
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1063-651X
[DOI] 10.1103/PhysRevE.48.4689
[NCID] AA10848730
[DOI] http://dx.doi.org/10.1103/PhysRevE.48.4689
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