PEP-II相互作用区的格点和补偿方案
Lattice and Compensation Schemes for the PEP-II Interaction Region
摘要:
PEP-II相互作用区域被设计为适应不对称的光束能量、正面碰撞、小聚束间距,并提供低β * 以获得高亮度。实施本地校正方案以补偿来自IP双峰的非线性色度以及来自6 Tm非对称探测器螺线管的耦合、轨道和聚焦效应。介绍了其主要红外光学特性和局部校正方案。MAD代码用于光学计算。
英文摘要:
The PEP-II interaction region is designed to accommodate asymmetric beam energies, head-on collisions, small bunch spacing and provide low beta* for high luminosity. Local correction schemes are implemented to compensate non-linear chromaticity from the IP doublets as well as coupling, orbit and focusing effects from the 6 Tm asymmetric detector solenoid. The main IR optics features and local correction schemes are presented. MAD code is used for the optics calculations.
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