The beam mismatches in the RFQ dynamics design
The beam mismatches in the RFQ dynamics design
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DOI：
10.1016/j.nima.2005.08.067
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发表时间：
2005-12
影响因子：
1.4
通讯作者：
Xueqing Yan;J. Fang;Zhiyu Guo;C. E. Chen
中科院分区：
文献类型：
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作者：
Xueqing Yan;J. Fang;Zhiyu Guo;C. E. Chen
LANL对强流四极直线加速器的动力学设计进行了广泛的研究，并提出了一种通用的设计方法，但在这种动力学设计方法中，对束流失配的考虑还不够。由于束流包络失配是强流直线加速器中束晕形成和束流发射度增长的主要原因，本文在此基础上进行了扩展，分析了束流包络失配的原因，提出了一种新的动力学方法，以减小束晕发射度增长和束流损失。通过一个动力学算例验证了该设计方法的有效性。
The dynamics design of radio frequency quadruple (RFQ) Linacs for high intensity beams had been extensively studied by LANL and generalized method had been proposed, however, the beam mismatches are still not paid enough attentions in this dynamics design method. As the beam envelope mismatch is the major source of formation of halo and related emittance growth in high intensity linac, so some extensions based on the generalized method are developed, where the causes of beam mismatch in RFQ are analyzed and a new dynamics method is proposed to minimize the emittance growth and the related beam loss. A dynamics example is given to prove this design method.