Since 1978, when the CELLO magnet was manufactured, superconducting detector magnets have been wound using NbTi based, Aluminum stabilized conductors. However, other choices are possible and Magnesium Diboride (MgB2) could be an attractive alternative. Magnets wound with MgB2 can be operated at relatively high temperature (10 to 20 K), therefore increasing the cryogenics efficiency. Efficiency is not the only advantage in using MgB2 instead of NbTi: higher operating temperature and higher temperature margin lead to higher enthalpy margin, which means very stable magnets. In addition, MgB2 is much cheaper respect to High Temperature Superconductors. The cost comparison between Al stabilized NbTi magnets and MgB2 magnets must be made considering the entire fabrication process.
Magnesium Diboride Magnets for Future Particle Detectors
Musenich R.;Bersani A.;Bracco M.;Farinon S.
2024-01-01
Abstract
Since 1978, when the CELLO magnet was manufactured, superconducting detector magnets have been wound using NbTi based, Aluminum stabilized conductors. However, other choices are possible and Magnesium Diboride (MgB2) could be an attractive alternative. Magnets wound with MgB2 can be operated at relatively high temperature (10 to 20 K), therefore increasing the cryogenics efficiency. Efficiency is not the only advantage in using MgB2 instead of NbTi: higher operating temperature and higher temperature margin lead to higher enthalpy margin, which means very stable magnets. In addition, MgB2 is much cheaper respect to High Temperature Superconductors. The cost comparison between Al stabilized NbTi magnets and MgB2 magnets must be made considering the entire fabrication process.
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