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ID 20752
本文ファイル
著者
Cheng, Weh-Hao
Gluckstern, Robert L.
NDC
物理学
抄録(英)
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.
掲載誌名
Physical Review E
48巻
6号
開始ページ
4689
終了ページ
4698
出版年月日
1993-12
出版者
The American Physical Society
ISSN
1063-651X
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 1993 The American Physical Society
関連情報URL
部局名
先端物質科学研究科