Final cooling for a high-energy high-luminosity lepton collider
Final cooling for a high-energy high-luminosity lepton collider
复制标题
高能高光度轻子对撞机的最终冷却
DOI：
10.1088/1748-0221/12/07/t07003
复制
发表时间：
2016
影响因子：
1.3
通讯作者：
D. Summers
中科院分区：
文献类型：
--
作者：
D. Neuffer;H. Sayed;T. Hart;D. Summers
高能μ子对撞机需要一个“最终冷却”系统，使横向发射度降低100倍，同时允许纵向发射度增加。基线方法具有低能量的横向冷却内的高场超导体，与强烈的纵向加热。这种方法和它最近的模拟进行了讨论。替代方法，其中更明确地包括发射交换。圆到平束变换、横向切片和纵向聚束聚结是替代方法的可能组成部分。基于楔的发射度交换可以提供大部分所需的横向冷却和纵向加热。Li透镜和四极聚焦系统也可以提供大部分所需的最终冷却。
A high-energy muon collider requires a "final cooling" system that reduces transverse emittance by a factor of ∼ 10, while allowing the longitudinal emittance to increase. The baseline approach has low-energy transverse cooling within high-field solenoids, with strong longitudinal heating. This approach and its recent simulation are discussed. Alternative approaches, which more explicitly include emittance exchange are also presented. Round-to-flat beam transform, transverse slicing, and longitudinal bunch coalescence are possible components of an alternative approach. Wedge-based emittance exchange could provide much of the required transverse cooling with longitudinal heating. Li-lens and quadrupole focusing systems could also provide much of the required final cooling.