I. Introduction
The Development of conduction-cooled superconducting magnet technology allows high field superconducting magnets to be operated without use of liquid helium and nitrogen. Early in 1983, Hoenig demonstrated a thermal design of the conduction-cooled superconducting magnet combined with GM cryocooler [1]. The most prominent value of this technology lies in the operation convenience, low operating costs and ease of use of superconducting magnet system. Many research areas have benefited from the magnetic application of high field superconducting magnets. Especially, magnetic field effects have recently been observed for material, chemical and biological systems [2], [3].