COOLING SYSTEM

摘要

The present invention is provided with: a linear conductor (20) that has a cross section formed into a circular shape, has a metal wire having a purity of at least 99.999 mass%, and is formed having an average crystal grain size in a cross section of the metal wire that is at least 1/20 the diameter of the metal wire; a first connection section (21) connected to one end of the linear conductor (20); a second connection section (22) connected to the other end of the linear conductor (20); and a cooling device (30) that is provided between the first connection section (21) and second connection section (22) and that cools the linear conductor (20).