| Title |
Research on Beam Dynamics of a 2 GeV 6 MW Isochronous FFA |
| Authors |
- T.J. Zhang, T.J. Bian, Z.C. Chu, W. Fu, H. Le, J.Y. Liu, S. Pei, C. Wang, Z.G. Yin, S.P. Zhang, H. Zhou, X.F. Zhu
CIAE, Beijing, People’s Republic of China
- Z.Y. Yin
FRIB, East Lansing, Michigan, USA
|
| Abstract |
CIAE has proposed an innovative design for a 2 GeV/6 MW isochronous FFA in 2019. This study aims to present the results of beam dynamics research, demonstrating the feasibility to accelerate the intense proton beam with the energy beyond 1 GeV limitation of isochronous cyclotrons. By introducing 1st - 3rd radial gradient of peak magnetic field to simulate the quadrupole to octupole component of the isochronous machine, three different lattice designs are obtained. Adjusting the radial gradient of the peak field allows an option to avoid or cross integer resonances. Various inherent and coupled resonances are investigated subsequently, with a focus on the destructive effects of the Vr=3 on the transverse phase space. Based on PIC method, we simulate the vortex motion caused by space charge in a large-scale alternating gradient field. Results indicated that the radial size of beam is ~ 10 mm, which is expected to be improved after considering the effects of neighboring bunches. Additionally, high-Q RF cavities and precession extraction further enlarge the turn separation to 30 mm, ensuring efficient beam extraction in the extraction region.
|
| Funding |
This work was supported in part by the National Natural Science Foun-dation of China under Grant 12135020. |
| Paper |
download MOIBA01.PDF [1.267 MB / 5 pages] |
| Cite |
download ※ BibTeX
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※ EndNote |
| 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 |
30 June 2023 |
| Revised |
08 July 2023 |
| Accepted |
11 July 2023 |
| Issued |
02 October 2023 |
| DOI |
doi:10.18429/JACoW-SAP2023-MOIBA01 |
| Pages |
4-8 |
| 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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