An oxide superconductor with superconduction properties being improved by effectively introducing a pinning center thereinto and its fabrication method are disclosed. The device further comprises a light source, as well as a diffuser which is disposed on a side of the object space that is averted from the light source. A system for carrying out the method is also provided. Each section includes a housing having rollers or other support surfaces adjacent the ends of the housing, with at least one of the rollers being driven by an electric motor to rotate the cylinder at predetermined times when the cylinder is supported on the rollers. The distance between the outer circumference of the coil and the inner circumference of the heat sink is 70\u2013100 \u03bcm. The number of composite structures is configured to increase a capacity of the composite elongate member to withstand forces that pull the composite elongate member away from the structure.