一种最小化双孔径cos-theta超导偶极子中磁串扰的方法
A method for minimizing the magnetic cross-talk in twin-aperture cos-theta superconducting dipoles
AI总结：
本文提出一种扩展单孔径扇区线圈模型的解析方法，用于最小化双孔径cos-theta超导偶极子的磁串扰，并成功应用于高亮度LHC的D2和FCC的16 T偶极子，找到替代线圈设计。
摘要：
我们提出了一种解析方法，用于最小化双孔径cos-theta偶极子中的磁串扰。在单孔径cos-theta布局中，线圈设计可以通过基于扇区线圈近似的解析方法完成。该方法允许快速评估场谐波，并针对由不同扇区数量构成的线圈布局，对扇区的位置和尺寸进行几乎穷尽的扫描。这提高了找到最符合规格的线圈形状的概率。在双孔径布置中，磁串扰可能不可忽略，为了对不需要的多极子进行解析最小化，需要对单孔径扇区模型进行扩展。高亮度LHC的复合偶极子D2和未来环形对撞机（FCC）的16 T弯曲偶极子就是这种情况。该解析方法已被用于为这两种偶极子寻找替代线圈设计。
英文摘要：
We present an analytic method to minimize the magnetic cross-talk in twin-aperture cos-theta dipoles. In the single-aperture cos-theta layout, the coil design can be performed with an analytic approach, based on a sector coil approximation. This method allows a fast evaluation of the field harmonics and an almost exhaustive scan on the positions and dimensions of the sectors, for coil layouts made of a different number of sectors. This increases the probabilities to find the coil shape which best fits the specifications. In a twin-aperture arrangement, the magnetic cross-talk can be not negligible and, to the aim of an analytic minimization of the unwanted multipoles, an extension of the single-aperture sector model is required. This is the case of the recombination dipole D2 for the High Luminosity LHC and of the 16-T bending dipole for the Future Circular Collider (FCC). This analytical method has been used to find alternative coil designs for both dipoles.
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