Cryogenic system for the 43 T Hybrid Magnet at LNCMI Grenoble: from the needs to the commissioning

Ronayette, L.; Crispel, S.; Berriaud, Christophe; Berthier, R.; Caplanne, G.; Górski, M.; Graffin, P.; Hanoux, Pierre; Hergat, T.; Hervieu, B.; Juster, F. P.; Pfister, Rolf; Pissard, M.; Pugnat, P.; Vincent, Benjamin

doi:10.1088/1757-899x/171/1/012107

Cited by 6 publications

(3 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The design of the cryogenic infrastructure and cryostat has been already reported in [6], [7] and will only be briefly recalled here. The pressurized superfluid He at 1.8 K, 1200 hPa used to cool the superconducting magnet in its He vessel is obtained from a Claudet bath [8] located inside a cryogenic satellite, which is deported center to center to about 8 m from the magnet cryostat via a 5.5 m long cryogenic line (figure 1) in a reduced stray magnetic field region of 10 mT at maximum.…”

Section: Overview Of the Cryogenicsmentioning

confidence: 99%

“…Among main differences, the LNCMI cryogenic satellite contains a 1.5 m 3 cold buffer maintained at 10 K large enough to recover about 60 % of the 1100 liters of pressurized liquid helium contained in the helium vessel in case of a magnet quench. The cryogenic satellite is fed with LHe at 4.5 K and 1.3 bar from a 4500 l Dewar connected to a fully dedicated cryoplant including the He liquefier of 150 l/h production designed and manufactured by Air Liquide [7].…”

Section: Overview Of the Cryogenicsmentioning

confidence: 99%

“…The 7500/8000 A current leads are installed inside the cryogenic satellite with the superconducting cold extremities made of 2 short bus bars passing through the λ-plate [7]. The choice made for the current lead design was first to focus on safe operation preventing any damages even in case of fully degraded cooling conditions and second on the optimization of the liquid He consumption.…”

Section: Design Of the Current Leadsmentioning

confidence: 99%

See 2 more Smart Citations

43+T Grenoble hybrid magnet: Commissioning tests of the current leads and cryogenic satellite producing the pressurized superfluid He at 1.8 K

Pugnat

Barbier

Berriaud

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

The Grenoble Hybrid magnet is a modular platform using resistive and superconducting technologies to produce various continuous high magnetic field and flux configurations for the scientific community. They range from 43 T in 34 mm diameter with 24 MW electrical power to 9 T in 800 mm diameter when the superconducting coil is used alone. Thanks to the ongoing upgrade of the electrical power installation of LNCMI-Grenoble up to 30 MW and possibly to 36 MW, the possibility to increase the total field up to 45-46 T in the near future is foresee and deeply studied. The key design parameters will be briefly recalled including the specifically developed Nb-Ti/Cu conductor, the large bore outsert superconducting coil, the magnet cryostat with its structure including the eddy-current shield, the cryogenic line for the interconnection with the cryogenic satellite and the fully dedicated 150 l/h He liquefaction plant. All components of the hybrid magnet platform have been built, tested and delivered to LNCMI-Grenoble, where integration and assembly are ongoing. The status of the project will be given with focus to the recent commissioning tests of the cryogenic satellite producing the pressurized superfluid He at 1.8 K as well as to the successful powering tests of the specially developed current leads at ultimate current and under fully degraded cooling conditions simulating the worst-case accidental scenario.

show abstract

Section: Overview Of the Cryogenicsmentioning

confidence: 99%

Section: Overview Of the Cryogenicsmentioning

confidence: 99%

Section: Design Of the Current Leadsmentioning

confidence: 99%

See 1 more Smart Citation