Speaker
Description
Superconducting Magnet Division, Brookhaven National Laboratory is designing the final focusing quadrupoles, corrector magnets and compensation solenoids (anti-solenoid and screening solenoids)for FCC-ee Interaction region. This talk discusses MDI challenges from consideration of these magnets and general cryogenic cryostat design. Lack of magnetic septum between nearby beam lines needs self-consistent crosstalk compensation. The lattice requires variety of superconducting magnets in a very confined available radial space. BNL Magnet Division invented Direct Wind Superconducting magnet technology is a natural choice for accommodating final focusing quadrupoles and corrector magnets which out circles the main focusing quadrupole magnets. In the non-local compensation scheme, the screening solenoid remains inside the IR while the compensation solenoid will move out of the IR which is expected to simplify the overall challenges of the MDI. This talk will describe the comprehensive electromagnetic, cryogenic and interface design of the final focusing quadrupoles, corrector quadrupole, corrector dipole magnets and screening and compensation solenoid for FCCee IR with non-local compensation scheme which is recently downselected as the prefered option. Concept of hybrid direct winds magnets is developed to optimize the performance of final focusing quadrupoles for FCC-ee.
