| Autor: |
Ferracin, P., Ambrosio, G., Anerella, M., Arbelaez, D., Brouwer, L., Barzi, E., Cooley, L. D., Cozzolino, J., Garcia Fajardo, L., Gupta, R., Juchno, M., Kashikhin, V. V., Kurian, F., Marinozzi, V., Novitski, I., Rochepault, E., Stern, J., Vallone, G., Yahia, B., Zlobin, A.V. |
| Zdroj: |
IEEE Transactions on Applied Superconductivity; August 2023, Vol. 33 Issue: 5 p1-7, 7p |
| Abstrakt: |
Hybrid magnets are currently under consideration as an economically viable option towards 20 T dipole magnets for next generation of particle accelerators. In these magnets, High Temperature Superconducting (HTS) materials are used in the high field part of the coil with so-called “insert coils”, and Low Temperature Superconductors (LTS) like Nb3Sn and Nb-Ti superconductors are used in the lower field region with so-called “outsert coils”. The attractiveness of the hybrid option lays on the fact that, on the one hand, the 20 T field level is beyond the Nb3Sn practical limits of 15-16 T for accelerator magnets and can be achieved only via HTS materials; on the other hand, the high cost of HTS superconductors compared to LTS superconductors makes it advantageous exploring a hybrid approach, where the HTS portion of the coil is minimized. We present in this paper an overview of different design options aimed at generating 20 T field in a 50 mm clear aperture. The coil layouts investigated include the Cos-theta design (CT), with its variations to reduce the conductor peak stress, namely the Canted Cos-theta design (CCT) and the Stress Management Cos-theta design (SMCT), and, in addition, the Block-type design (BL) including a form of stress management and the Common-Coil design (CC). Results from a magnetic and mechanical analysis are discussed, with particular focus on the comparison between the different options regarding quantity of superconducting material, field quality, conductor peak stress, and quench protection. |
| Databáze: |
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