Conceptual design of LEBT and RFQ for the HIAF linac
Conceptual design of LEBT and RFQ for the HIAF linac
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DOI：
10.1016/j.nima.2013.06.019
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发表时间：
2013-11
影响因子：
1.4
通讯作者：
Chao Li;Liepeng Sun;Yuan He;Lei Yang;X. Qi;Zhi-jun Wang
中科院分区：
文献类型：
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作者：
Chao Li;Liepeng Sun;Yuan He;Lei Yang;X. Qi;Zhi-jun Wang
本文介绍了中国科学院近代物理研究所重离子加速器（HIAF）工程中直线加速器段低能束流输运（LEBT）和射频四极子（RFD）的概念设计和束流动力学分析。提出了一种利用多谐波聚束器（MHB）将连续光束在激光器上游进行聚束的新方案。ADC的调制和同步相位不是从1.0和−90°开始，而是从1.05和−45°开始。结果表明，它是可能的，以保持横向发射度的增长在容许范围内，而纵向发射度是远远小于设计没有外部聚束器。
In this paper, we present conceptual design and beam dynamics analysis of the Low Energy Beam Transport (LEBT) and Radio Frequency Quadrupole (RFQ) for the linac section of a heavy ion accelerator facility, high intensity Heavy Ion Accelerator Facility (HIAF) project, which is promoted by the Institution of Modern Physics (IMP) of the Chinese Academy of Sciences (CAS). A novel scheme is prompted that a Multi-Harmonic-Buncher (MHB) is used for bunching the continuous beam up-stream of the RFQ. The modulationmand synchronous phaseψof the RFQ do not start from 1.0 and −90° but 1.05 and −45° instead. The results indicate that it is possible to keep transverse emittance growth within tolerable limits while the longitudinal emittiance is much smaller than the design without an external buncher.