| Title |
Beam Dynamics in Superconducting Proton Linac |
| Authors |
- X.M. Wan, Z. Li, W.L. Liao, P.T. Lin, X.B. Luo, X.J. Pu, Z.Q. Ren, Y.F. Yang
SCU, Chengdu, People’s Republic of China
|
| Abstract |
Beam loss control is a crucial research direction in high-current superconducting linear accelerators (SCL). The research findings include firstly, for continuous beams, when tune depression eta > 0.7, zero current periodic phase advance (σ0t) can partially exceed 90° during transport in solenoid and quadrupole doublet periodic focusing channels. Different results occur when eta < 0.7. Secondly, in the solenoid system, σ0t can partially exceed 90° without significant impact on beam quality. In the quadrupole doublet focusing system, the partial breakdown of 90° affects beam quality. Thirdly, Similar conclusions hold for acceleration effects. Fourthly, numerical analysis shows that double-period structures have more stringent design criteria than fully period structures. The double-period structure can cause envelope instability even if σ0t < 90°. Fifthly, the primary factor causing halo is the 2:1 resonance. Additionally, when eta is small, higher-order resonances can also cause halo.
|
| Funding |
This work was supported by the National Natural Science Foundation of China (Grant Nos. 11375122 and 11875197). |
| Paper |
download TUPB019.PDF [0.926 MB / 3 pages] |
| Cite |
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| Conference |
SAP2023 |
| Series |
Symposium on Accelerator Physics (14th) |
| Location |
Xichang, China |
| Date |
10-12 July 2023 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Volker RW Schaa (GSI, Darmstadt, Germany); Wenhui Huang (TUB, Beijing, China); Xueqing Yan (PKU, Beijing, China); Chuanxiang Tang (TUB, Beijing, China); Lu Li (IMP, Lanzhou, China) |
| Online ISBN |
978-3-95450-265-3 |
| Received |
09 July 2023 |
| Revised |
11 July 2023 |
| Accepted |
12 July 2023 |
| Issued |
08 April 2024 |
| DOI |
doi:10.18429/JACoW-SAP2023-TUPB019 |
| Pages |
126-128 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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