Abstract
The purpose of this study is to reduce a mechanical heat load which is generated inside the on-board superconducting coil (SC-coil) for JR MAGLEV. The mechanical heat generation inside the SC-coil-installed inner vessel was investigated with on the assumption that the mechanical heat is generated by the friction caused by the relative microscopic slips between fasteners and the SC-coil. SC-coil vibration tests and FEM analysis were performed to study the correlation between SC-coil vibration and the mechanical loss. A fretting wear test was performed at liquid-helium-cooled boundaries between structural components of the SC-coil at relative slips of less than 30 microns.
