Speaker
Description
The baseline design of the FCC-ee main ring relies
on thousands of separate resistive quadrupoles and sextupoles, ar-
ranged in different combinations along its 90.7 km arc. However,
this choice implies a substantial electrical power consumption
due to the aggregate ohmic dissipation of normal conducting
magnets. This paper presents an alternative design of a combined-
function superferric magnet that aims to integrate quadrupole,
sextupole, and dipolar fields within the same structure. The
baseline design is based on a dodecapolar iron yoke, excited
by High-Temperature Superconducting (HTS) racetrack coils
operating at 30 K without liquid helium. We show that a three-
power supply configuration is able to control and generate all the
possible combinations of quadrupole and sextupole, at constant
dipole. The design has been optimized on the configurations with
maximum values maintaining at least 10K temperature margin
on the HTS conductor. The quench-protection strategy at 30 K,
the field-quality evaluation, and the mechanical design of a first
prototype coil are also discussed. This work demonstrates that
an HTS superferric combined magnet is a viable, power-efficient
alternative to the resistive baseline for FCC-ee.
| Participation in Early Career Resarcher Award | Yes |
|---|---|
| I am an Early Career Researcher according to the ECFA definition | Yes |
| Indicate the TRL level 1 to 9 of the contents provided in the contribution | TRL 2 - TRL 3 |
| This research has not been previously published and is not under review elsewhere | Yes |
| This work is genuinely our own | Yes |
| Indicate the topical domain of your submission | Technologies |