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arXiv · 1910.06751

A method for minimizing the magnetic cross-talk in twin-aperture cos-theta superconducting dipoles

Alessandro Maria Ricci·Pasquale Fabbricatore
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Abstract

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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Alessandro Maria Ricci, Pasquale Fabbricatore. 2019-10-15. A method for minimizing the magnetic cross-talk in twin-aperture cos-theta superconducting dipoles. https://doi.org/10.1109/tasc.2020.2986403

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