TUYAS0103
INFN Genova, Genova, Italy
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TUYAS0103 |
MgB2 Conductors for Future Detector Magnets | |
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| 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. | ||
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Slides TUYAS0103 [2.362 MB] | |
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