The change of coupling losses in aluminum-stabilized superconductors due to the Hall effect
The change of coupling losses in aluminum-stabilized superconductors due to the Hall effect is investigated experimentally and numerically. The Hall effect is here taken to be an interaction between the inter-strand coupling current and the external DC magnetic field. The loss measurement of the R&D conductor for the helical coil of the Large Helical Device is carried out under the coexistence of the transverse and the longitudinal magnetic fields. The measured coupling loss of the real conductor induced by the changing transverse magnetic field is increased by the existence of the longitudinal DC field. These loss features are compared with those by numerical analysis, based on the two dimensional finite element method, of a real conductor with complex cross-sectional structure.<<ETX>>