CEPC partial double ring scheme and crab-waist parameters
CEPC partial double ring scheme and crab-waist parameters
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DOI：
10.1142/s0217751x16440164
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发表时间：
2016-09
影响因子：
1.6
通讯作者：
Dou Wang;Jie Gao;F. Su;M. Xiao;Y. Zhang;Yiwei Wang;Bai Sha;H. Geng;J. Zhai;T. Bian-
中科院分区：
文献类型：
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作者：
Dou Wang;Jie Gao;F. Su;M. Xiao;Y. Zhang;Yiwei Wang;Bai Sha;H. Geng;J. Zhai;T. Bian-
为了避免椒盐轨道，CEPC被提出在CDR中使用部分双环方案。本文给出了一种从给定的IP垂直β、束流功率等技术限制条件出发，利用最大束流调谐漂移和束流寿命的解析表达式，对蟹腰CEPC的机械参数进行一致性设计的一般方法。将开发具有蟹六极的FFS，并重新设计弧形晶格，以获得蟹腰方案的较低发射度。
In order to avoid the pretzel orbit, CEPC is proposed to use partial double ring scheme in CDR. In this paper, a general method of how to make an consistent machine parameter design of CEPC with crab-waist by using analytical expression of maximum beam–beam tune shift and beamstrahlung beam lifetime started from given IP vertical beta, beam power and other technical limitations were developed. FFS with crab sextupoles will be developed and the arc lattice will be redesigned to acheive the lower emittance for crab-waist scheme.