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The various effects of temperature on the Ginzburg-Landau parameter, thermodynamic and upper critical field of the [Nb.sub.3]Sn strands are being discussed. The results show that the surface barrier is responsible for the asymmetry shown in the magnetic relaxation rate for flux entry and exit.

The Heating surge and temperature oscillation is analyzed in the poloidal field (PF) and toroidal field (TF) coils of Korean Superconducting Tokamak Advanced Research (KSTAR). The experimental results show that the maximum temperatures in TF and PF are about 5.7 K and 5.9 K respectively.

The Korean Superconducting Tokamak Advanced Research (KSTAR) device is a tokamak with a fully superconducting magnet system, which enables an advanced quasisteady-state operation. The effect of three-dimensional heat conduction and the eddy current loss in the vacuum chamber of KSTAR is described.

The relationship between the current density and magnetic flux density is studied by using Turner's target field approach for spherical conductors. The results show that by using this method, uniform or gradient magnetic field that vary linearly along the x or y direction can be generated.

Properties of ferromagnetic materials are measured at liquid nitrogen temperature.

The effects of transformer geometry on magnetic field leakage are examined and reported.

Research involving simulations of dynamic stress in PF (Polodial Field) superconducting magnets for the KSTAR ( Korea Superconducting Tokamak Advanced Reactor) is described and discussed.

A relation between travel of the bending roller and spring back radius is described. The relation was obtained by means of virtual manufacturing with a 3-roll bending process.

MFEM1D, a numerical method based on the finite-element method, is described. It is used to investigate the helium expansion and quench propagation in cable-in-conduit conductors (CICC).

Effects of inlet pressure and mass flow rate on the temperature margin and heat-removal characteristics of the Samsung Superconducting Test Facility (SSTF) are examined and discussed.

Thermal analysis of the Korea Superconducting Tokamak Advanced Research (KSTAR) device's poloidal field (PF) was accomplished using the code SAITOKPF

The development of conductors with an aluminum super-stabilizer was proposed for some applications of accelerator detector magnets for high-energy physics and superconducting magnet storage energy devices. The conductors are designed with the cryogenics stabilization by using a large amount of low resistance aluminum stabilizer. However, it has induced to some new problems. One of these is the effect of the current redistribution between superconducting strands and stabilizer on the quench propagation and stability. In this study, we assume a superconducting magnet to be immersed in liquid helium. A quasi-three-dimensional model is proposed to study thermal diffusion in superconducting magnet and current diffusion is based on the solution of Maxwell's equation. The uniform temperature distribution in the cross-sectional area of conductor is taken into account due to the high thermal conduction of stabilizer and small size compared with the length. An adaptive mesh scheme COLSYS is employed to capture the solution of temperature and current in the front of normal position. The computational model includes nonlinear thermal and electrical characteristics in superconducting strands and aluminum stabilizer and heat transfer of helium. The influence of current re-distribution between stabilizer and superconducting strands on the quench is studied. Index Terms--Adaptive mesh, current diffusion, normal zone of finite length propagation, quasi-three-dimensional numerical model, quench, stability, superconducting magnet.

The background magnet system on the Samsung Superconductor Test Facility for Korea Superconducting Tokamak Advanced Research is discussed.

Research describing the quench characteristics of a superconducting magnet consisting of several pancake shaped coils is presented. The application of the moving mesh finite volume method to a simulated quasi-three-dimensional model for quench processes is investigated.

Research is presented describing the design of a 50 kA superconducting transformer that charges a cable-in-conduit conductor (CICC) short sample for one sescond. The transformer is part of the Samsung Superconductor Test Facility, that is being designed for Korea Superconducting Tokamak Advanced Research.

The stability margin of NB3Sn cable-in-conduit-conductor was assessed using a numerical model, based on the finite volume technique.