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arXiv · 1607.05446

The FCC-ee Interaction Region Magnet Design

M. Koratzinos·A. Blondel·A. Bogomyagkov·S. Sinyatkin·M. Benedikt·B. Holzer·J. van Nugteren·F. Zimmermann·K. Oide
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Abstract

The design of the region close to the interaction point of the FCC-ee experiments is especially challenging. The beams collide at an angle (+-15 mrad) in the high-field region of the detector solenoid. Moreover, the very low vertical beta_y* of the machine necessitates that the final focusing quadrupoles have a distance from the IP (L*) of around 2 m and therefore are inside the main detector solenoid. The beams should be screened from the effect of the detector magnetic field, and the emittance blow-up due to vertical dispersion in the interaction region should be minimized, while leaving enough space for detector components. Crosstalk between the two final focus quadrupoles, only about 6 cm apart at the tip, should also be minimized.

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M. Koratzinos, A. Blondel, A. Bogomyagkov, S. Sinyatkin, M. Benedikt, B. Holzer, J. van Nugteren, F. Zimmermann, K. Oide. 2016-07-19. The FCC-ee Interaction Region Magnet Design. https://arxiv.org/abs/1607.05446

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