Speaker
Description
Powerful superconducting (SC) magnets are the workhorses of energy-frontier colliders. The magnetic field strengths required to achieve necessary beam acceleration and cooling at a 10 TeV Muon Collider are projected to reach 20-30T, between 2 to 4 times the strength of the SC electromagnets currently in operation at the Large Hadron Collider (LHC) [1]. In addition to high field strength, these magnets will also need to be capable of operating in a high-radiation environment, which can cause low-temperature SCs (LTS) to heat and quench (transition to normal conducting regime), often resulting in permanent material degradation. Adequately shielding LTS from radiation poses a significant challenge with respect to both power consumption and structural design. Taking these requirements into account, the natural solution is a high-temperature SC (HTS) material, capable of generating the strong fields demanded by the Muon Collider and able to operate at significantly higher temperatures. This poster will report on REBCOs (Rare Earth Barium Copper Oxides), a class of superconducting materials with critical temperature in the liquid nitrogen regime (~77K). We will summarize the challenges inherent to REBCO magnet design, give a brief overview of the studies currently underway at Fermilab under the US Magnet Development Program, and discuss the outlook for REBCO HTS in the context of a Muon Collider.
[1] L. Bottura et al., "Magnets for a Muon Collider—Needs and Plans," in IEEE Transactions on Applied Superconductivity, vol. 34, no. 5, pp. 1-8, Aug. 2024, Art no. 4005708, doi: 10.1109/TASC.2024.3382069.
