Conceptual design of 20 T hybrid accelerator dipole magnets

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...

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Veröffentlicht in:IEEE transactions on applied superconductivity Jg. 33; H. 5; S. 1 - 7
Hauptverfasser: Ferracin, P., Ambrosio, G., Anerella, M., Arbelaez, D., Brouwer, L., Barzi, E., Cooley, L., Cozzolino, J., Fajardo, L. Garcia, Gupta, R., Juchno, M., Kashikhin, V.V., Kurian, F., Marinozzi, V., Novitski, I., Rochepault, E., Stern, J., Vallone, G., Yahia, B., Zlobin, A.V.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York IEEE 01.08.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Coils
Conceptual design
Conductors
dipole magnets
Dipoles
High temperature
High-temperature superconductors
HTS
hybrid magnet
hybrid magnets
Low temperature
Magnetic analysis
Magnetic tunneling
Magnetomechanical effects
Magnets
Mechanical analysis
Nb3Sn magnets
Nb<sub xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">3 Sn magnets
PARTICLE ACCELERATORS
Stress
Superconducting magnets
Superconductivity
Superconductors
ISSN:1051-8223, 1558-2515
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Zusammenfassung: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 Nb 3 Sn 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 Nb 3 Sn 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.
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FERMILAB-PUB-22-856-TD; arXiv:2302.04940
AC02-07CH11359; SC0012704; AC02-05CH11231
USDOE Office of Science (SC), High Energy Physics (HEP)
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2023.3250382