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Report No.

Analysis program for magnetic field, inductance of air-core coils; COIL

Yoshida, Kiyoshi; Isono, Takaaki; Sugimoto, Makoto; Okuno, Kiyoshi

In case of designing a superconducting coil (SC), one must calculate a magnetic field (B) and its inductance (L) many times in order to arrange proper design parameters of SC because there are many design parameters to evaluate. SC cannot be designed by the optimum condition if a B and L can't be computed easily. When SC is energized, measurement values of B and L are very well agreed with calculated values. The B and L of the coil that doesn't contain a ferromagnetic material can be calculated by the numerical integration. The analytic method were developed and established in 1970's. This paper shows the calculation program COIL that has been developed by applying this analytic method in JAERI. COIL is qualified by the comparison between measured and calculated values in case of several real SC. COIL is specified to analyze SC of tokamak device. Even for a complicated tokamak device, B and L can be calculated in several minutes by the high performance of the recent personal computer. COIL contributes to design SC for ITER and others.



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