JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - UNPB AU - Musenich, R. AU - Farinon, S. ED - Biagini, Maria Enrica ED - Chrin, Jan ED - Giabbai, Manuela ED - Iungo, Massimiliano ED - Schaa, Volker R.W. TI - MgB₂ Conductors for Future Detector Magnets J2 - Proc. of eeFACT2022, Frascati, Italy, 12-16 September 2022 CY - Frascati, Italy T2 - ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders T3 - 65 LA - english AB - Since 1978, when the CELLO magnet was manufactured, superconducting detector magnets have been wound using NbTi based, aluminium stabilised conductors. However, other choices are possible and Magnesium Diboride (MgB₂) could be an attractive alternative. Due to its characteristics, MgB₂ is suitable for low field applications as detector magnets. Magnets wound with MgB₂ conductors can be operated at relatively high temperature, between 10 K and 20 K, therefore increasing the cryogenics efficiency in terms of both refrigerator performance and indirect cooling (higher thermal conductivity of materials). Efficiency is not the only advantage in using MgB₂ instead of NbTi: higher operating temperature and higher temperature margin lead to higher enthalpy margin, with higher stability respect to quench triggering disturbances. In addition, MgB₂ is much cheaper respect to High Temperature Superconductors but more expensive than NbTi. However, cost comparison between Al stabilised NbTi magnets and MgB₂ magnets must be made taking into account the entire fabrication process. R&D is necessary to develop the conductor. Detector magnet design must be rethought based on MgB₂ conductor features. PB - JACoW Publishing CP - Geneva, Switzerland ER -