Study and Development of the Superconducting Conductor for the Grenoble Hybrid Magnet

Pugnat, P.; Berriaud, Christophe; Fazilleau, P.; Hervieu, B.; Joss, W.; Oberli, L.; Pfister, Rolf; Ronayette, L.; Xiao, Han

doi:10.1109/tasc.2011.2180882

Cited by 19 publications

(3 citation statements)

References 10 publications

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“…The maximum hoop stress for the inner coil turn of 1100 mm diameter is equal to 140 MPa. The new superconducting outsert coil of the Grenoble hybrid magnet is based on an innovative conductor development [4], [5]. A Nb-Ti/Cu Rutherford cable of rectangular cross section is soldered on a Cu-Ag stabilizer to form the so-called Rutherford Cable On Conduit Conductor (RCOCC).…”

Section: Superconducting Outsert Coil and Rcoccmentioning

confidence: 99%

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Final Design of the New Grenoble Hybrid Magnet

Fazilleau

Berriaud

Berthier

et al. 2012

IEEE Trans. Appl. Supercond.

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A CEA-CNRS French collaboration is currently developing a new hybrid magnet; this magnet combines a resistive insert composed of Bitter and polyhelix coils and a new large bore superconductor outsert to create an overall continuous magnetic field of 42+ T in a 34 mm warm aperture. The design of the superconducting coil outsert has been completed after thorough studies and successful experimental validation phases. Based on the novel development of a Nb-Ti/Cu Rutherford Cable On Conduit Conductor (RCOCC) cooled down to 1.8 K by the mean of a bath of superfluid helium at atmospheric pressure, the superconducting coil aims to produce a continuous magnetic field of 8.5 T in a 1.1 m cold bore diameter. The main results of the final design studies of the superconducting coil are presented including the 2D and 3D mechanical stress analysis, the conductor and coil specifications, the coil protection system as well as the required cryogenics infrastructure. The final design of the resistive insert coils is also described.

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Section: Superconducting Outsert Coil and Rcoccmentioning

confidence: 99%

“…Results concerning the studies and the developments of the RCOCC are reported in [5] together with a summary of the technical specification.…”

Section: Superconducting Outsert Coil and Rcoccmentioning

confidence: 99%

Final Design of the New Grenoble Hybrid Magnet

Fazilleau

Berriaud

Berthier

et al. 2012

IEEE Trans. Appl. Supercond.

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“…Several sites are at disposal for applied superconductivity: two 50 mm diameter room temperature bores, one providing 25 T with 10 MW and the other 30 T with 20 MW, and a 160 mm diameter room temperature bore providing 20 T with 20 MW (27 T in a hybrid upgrade available in 2015 [6], [7]). Because of a high demand, access to 10 MW is easier than to 20 MW.…”

Section: Experimental Set-upmentioning

confidence: 99%

Characterization of YBCO Coated Conductors Under High Magnetic Field at LNCMI

Chaud¹,

Debray²,

Ronayette³

et al. 2012

IEEE Trans. Appl. Supercond.

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The second generation (2G) HTS conductors, the YBaCuO Coated Conductors, show very exciting performances in terms of critical currents under very high fields whereas their mechanical properties, the key issues for very high field magnets, are outstanding for the IBAD (Ion Beam Assisted Deposition) route. Preliminary measurements have shown critical currents Ic above 500 A at 15 T and 4 K on commercial YBCO coated conductors. They are now available in reasonable length and manufacturing focus to provide reliable, consistent performance conductors. With these high critical current and tensile strength above 600 MPa, these conductors are very promising for making HTS superconducting coils able to generate very high field. But very few characterizations exist above 20 T. LNCMI is one of the few facilities in the world where such measurement can be performed.

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Superconducting magnet technology for the outer coils of resistive-superconducting hybrid magnets

Bird

2024

Supercond. Sci. Technol.

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The world’s highest-field dc magnets have, for more than fifty years, consisted of a combination of resistive and superconducting coils that we refer to as a “hybrid”. These magnets use superconducting technology for the outer coils, where the magnetic field is moderate, and resistive-magnet technology for the inner coils, where the field is highest. In such a configuration, higher fields have been attained than was possible with purely superconducting magnet technology, and lower lifecycle costs are attained than with a purely resistive magnet. The peak field available has been 45 T for over 20 years in Tallahassee, Florida, USA. There is presently a “revolution” underway in hybrid magnet development. A second 45 T hybrid was completed in 2022 in Hefei, China that might be upgraded to 48 T in a few years. The high field lab in Grenoble, France is also testing a hybrid magnet intended to reach 43.5 T but which also might be upgraded to 46 T in a few years. In addition, the lab in Nijmegen, The Netherlands is presently assembling a hybrid magnet intended to operate at 46 T. Papers have been presented and published with conceptual designs of hybrid magnets with fields up to 60 T. Given the developments underway, this is an appropriate time to review the history of such systems, with a particular focus on the larger, more expensive part of the magnets: the superconducting outsert coils. The demands placed on the superconducting coils of these magnet systems are unique due to their coupling with resistive coils that are operated at very high stress and wear out regularly, resulting in large field transients and fault forces. The evolution of the technology used for the superconducting coils of these hybrid systems is presented, evolving from ventilated windings to cable-in-conduit to cryogen-free.

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Study and Development of the Superconducting Conductor for the Grenoble Hybrid Magnet

Cited by 19 publications

References 10 publications

Final Design of the New Grenoble Hybrid Magnet

Final Design of the New Grenoble Hybrid Magnet

Characterization of YBCO Coated Conductors Under High Magnetic Field at LNCMI

Superconducting magnet technology for the outer coils of resistive-superconducting hybrid magnets

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