[Table of Contents]

Plasma and Fusion Research

Volume 5, S2113 (2010)

Regular Articles

Numerical Simulation of Contactless Methods for Measuring jC Distribution of High Temperature Superconducting Thin Film
Teruou TAKAYAMA, Atsushi KAMITANI and Hiroaki NAKAMURA1)
Yamagata University, Yamagata 992-8510, Japan
National Institute for Fusion Science, Gifu 509-5292, Japan
(Received 8 December 2010 / Accepted 22 February 2010 / Published 10 December 2010)


The inductive method and the permanent magnet method for measuring the critical current density in a high-temperature superconducting (HTS) thin film have been investigated numerically. For this purpose, a numerical code has been developed for analyzing the time evolution of the shielding current density in a HTS sample. The results of computations show that, in the inductive method, the critical current density near the film edge cannot be accurately evaluated. On the other hand, it is found that, in the permanent magnet method, even if the magnet is placed near the film edge, the maximum repulsive force is roughly proportional to the critical current density. This means that the critical current density near the film edge can be estimated from the resulting proportionality constants.


current distribution, current measurement, high-temperature superconductor, simulation, thin film

DOI: 10.1585/pfr.5.S2113


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This paper may be cited as follows:

Teruou TAKAYAMA, Atsushi KAMITANI and Hiroaki NAKAMURA, Plasma Fusion Res. 5, S2113 (2010).