Longitudinal instability caused by long drifts in the C-ADS injector- I
文献类型：期刊论文
| 作者 | Li ZH(李智慧); Tang JY(唐靖宇) ; Yan F(闫芳); Li, ZH; Tang, JY; Yang, F; Geng, HP; Meng, C; Sun, B; Cheng, P
|
| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2013 |
| 卷号 | 37期号:3页码:37005 |
| 关键词 | parametric resonance instability phase advance low energy superconducting linac |
| 英文摘要 | The period length is usually much larger than the cavity effective length in a low energy superconducting linac. The long drifts between cavities will not only decrease the acceptance of the linac, but also lead to possible instability. The linac will be more sensitive to mismatch and other perturbations. From the longitudinal motion equation, the function which describes the parametric resonance is deduced and the relation between the instability region and the cavity filling factor is discussed. It indicates that if the zero current phase advance per period is kept below 90 degrees, instability driven by parametric resonance will never occur. The space charge effect will enhance the instability, so that a stricter limitation on the phase advance per cell is required. From the numerical simulation results for two different schemes of Injector-I of the C-ADS driver linac, one can find that even with just three cells in the unstable region, significant emittance growth can be observed. Further investigations show that it is apt to produce halo particles under resonance, and the machine becomes more sensitive to errors and mismatches. Therefore, it is important to keep all cells in the stable region throughout the linac of very high beam power to minimize beam losses. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000320597000017 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224754]  |
| 专题 | 高能物理研究所_加速器中心 |
| 推荐引用方式 GB/T 7714 | Li ZH,Tang JY,Yan F,et al. Longitudinal instability caused by long drifts in the C-ADS injector- I[J]. CHINESE PHYSICS C,2013,37(3):37005. |
| APA | 李智慧.,唐靖宇.,闫芳.,Li, ZH.,Tang, JY.,...&孙纪磊.(2013).Longitudinal instability caused by long drifts in the C-ADS injector- I.CHINESE PHYSICS C,37(3),37005. |
| MLA | 李智慧,et al."Longitudinal instability caused by long drifts in the C-ADS injector- I".CHINESE PHYSICS C 37.3(2013):37005. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。