MT26 Abstracts, Timetable and Presentations

Session

Mon-Mo-Or3 - Quench and Normal Zone Behavior I

Mon-Mo-Or3

23 Sept 2019, 11:15

Regency EF

Conveners

Mon-Mo-Or3 - Quench and Normal Zone Behavior I

• Haigun Lee (Korea University)
• Fedor Gömöry (Institute of Electrical Engineering, Slovak Academy)

1598. Mon-Mo-Or3-01: Methods for performance diagnostics for Nb3Sn accelerator magnets in the CERN superconducting magnet test facility

Gerard Willering (CERN)

23/09/2019, 11:15

Contributed Oral Presentation

Superconducting Nb3Sn accelerator magnet technology start to reach maturity and the 11 T dipole magnets based on that technology are prepared to be installed in the LHC. Performing detailed diagnostics on Nb3Sn model magnets has been vital for giving feedback on the design and fabrication of the magnets and for the conductor performance in that particular configuration. In the last few years,...

896. Mon-Mo-Or3-02: Overall critical current in tapes and devices made from superconductors with critical current fluctuating along the wire length

Fedor Gömöry (Institute of Electrical Engineering, Slovak Academy of Sciences)

23/09/2019, 11:30

Contributed Oral Presentation

Fluctuation of critical current along the length of conductor is commonly observed in the 2nd generation of high-temperature superconductor tapes. In difference to low-temperature wires it seems that an elimination of this adverse feature is not a simple task. Then it would be sensible to incorporate its description in the standard tape characterization. We report on our effort to develop the...

1307. Mon-Mo-Or3-03: Use of Silicon Carbide Varistors For Quench Protection of Superconducting Magnets in Cryogenic Environments

Andrew Twin (Oxford Instruments)

23/09/2019, 11:45

Contributed Oral Presentation

The use of silicon carbide varistors for quench protection of superconducting magnets has previously been reported [1], where the varistor unit is external to the magnet in a room temperature environment. Here it has been demonstrated that, in comparison to similar linear resistors, the varistor has beneficial effects in both limiting the magnitude of clamping voltages as well as limiting the...

1669. Mon-Mo-Or3-04: Cable Quench Simulations and Current Sharing in REBCO Conductors Wound on Round Cores (CORC) for High Field Accelerator Magnet

Honghai Song (Brookhaven National Laboratory)

23/09/2019, 12:00

Contributed Oral Presentation

Winding REBCO conductors on round cores (CORC) has innovatively transformed REBCO thin tapes to round cables which allow high temperature superconductor to meet low-inductance requirement and offer symmetrical electromagnetic and mechanical properties for large-scale high field accelerator magnets. HTS conductors, however, are known for slow quench propagation and large minimum quench energy,...

1551. Mon-Mo-Or3-05: Quench Behaviour of Multi-Layer High Temperature Superconducting CORC Cables used in Hybrid Electric Aircraft

Zixuan Zhu

23/09/2019, 12:15

Contributed Oral Presentation

Hybrid electric aircraft requires high power density for power transmission, which makes the ReBCO conductor-on-round-core (CORC) cable a powerful candidate for the transmission line used in the hybrid-electric aircraft. However, quenching remains one of the biggest challenges in the development of CORC cable, for it can significantly influence the thermal stability and safety of the CORC...

1493. Mon-Mo-Or3-06: Calibration, validation and application of a novel 1D thermal-hydraulic/electric model for the quench analysis of the Al-slotted core HTS conductor for fusion applications

Andrea Zappatore (Politecnico di Torino)

23/09/2019, 12:30

Contributed Oral Presentation

Numerous high current conductor designs based on High Temperature Superconducting (HTS) materials for fusion magnets have been recently proposed worldwide.
One of the most promising is the Twisted-Slotted-Core Cable-in-Conduit-Conductor comprised of an aluminum core with twisted slots in which REBCO tapes are stacked and with an external metal jacket. The coolant flows in a central hole and...