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Direct observation of Hall voltage inside the LHD helical conductor

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9 Author(s)

Experiments with direct measurements of internal voltages inside an aluminum-stabilized superconductor used for the helical coils of the Large Helical Device have been performed with the specially prepared model coil. The experiments demonstrated the presence of a transverse voltage when a normal zone passes through a measured cross-section. We showed that the measured transverse voltages coincide with the calculated Hall voltages. This is the first experimental proof of the existence of Hall voltages during a quench process inside the helical coils superconductor. These data are important to estimate the magnetoresistivity and analyze the cryogenic stability of superconductors with multi-metal stabilizers.

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IEEE Transactions on Applied Superconductivity  (Volume:12 ,  Issue: 1 )