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| THPOR023 |
The FCC-ee Interaction Region Magnet Design |
3824 |
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- M. Koratzinos, A.P. Blondel
DPNC, Genève, Switzerland
- M. Benedikt, B.J. Holzer, F. Zimmermann, J. van Nugteren
CERN, Geneva, Switzerland
- A.V. Bogomyagkov, S.V. Sinyatkin
BINP SB RAS, Novosibirsk, Russia
- K. Oide
KEK, Ibaraki, Japan
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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 β* 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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