Performance Tests of Prototype High-Field HTS Coils in Grenoble

Longitudinal and transverse quench propagation tests were performed at the Laboratoire National des Champs Magnetiques Intenses (LNCMI) high-field test facility on instrumented double pancake coils fabricated by CEA-Saclay using co-wound high-temperature superconductor (HTS) tapes. Energy deposited...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2015-06, Vol.25 (3), p.1-5
Main Authors: Miyoshi, Yasuyuki, Badel, Arnaud, Chaud, Xavier, Benkel, Tara, Vincent, Benjamin, Tixador, Pascal, Marpaud, Julien, Debray, Francois, Lecrevisse, Thibault, Devaux, Melanie, Fazilleau, Philippe, Rey, Jean-Michel
Format: Article
Language:English
Subjects:
Accelerators
Coils
Conductors
Conductors (devices)
Current measurement
Deposition
Heaters
Heating
High current
High-field magnet
High-temperature superconductors
High-temperature superconductors (HTS)
HTS coils
HTS quench propagation
Magnetic fields
Nuclear Experiment
Pancake coils
Physics
Superconducting tapes
Superconductivity
Windings
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Summary:Longitudinal and transverse quench propagation tests were performed at the Laboratoire National des Champs Magnetiques Intenses (LNCMI) high-field test facility on instrumented double pancake coils fabricated by CEA-Saclay using co-wound high-temperature superconductor (HTS) tapes. Energy deposited on an embedded heater initiated a quench and its subsequent propagations. Following the resulting thermomechanical analysis, a conductor design with stacked HTS tapes co-wound with stabilizers was conceived. A ten-turn demonstrator racetrack coil has been fabricated from the stacked HTS conductor with an aim to investigate the operation margin of an HTS coil in a background magnetic field misaligned from the coil axis as expected for the operating condition of an accelerator magnet insert. A test setup with a high current capacity up to 3 kA and angular variability that utilizes a room-temperature 376-mm-bore 10-T resistive magnet at LNCMI in Grenoble has been built. The performances and operation margin of the racetrack coil were investigated.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2014.2363883