Determination of Pinning Parameters in Flux Creep-Flow Model for E-J characteristics of High Temperature Superconductors by using Differential Evolution

E. S. Otabe, T. Taguchi, Y. Tsuruda, Ryohei Funaki

研究成果: ジャーナルへの寄稿Conference article

抄録

The pinning parameters such as strength of pinning force, temperature dependence of pinning force and so on using in flux creep-flow model to explain electric field vs current density (E-J) characteristics were determined by Differential Evolution (DE). DE is one of the methods in Evolutionary Computation (EC) to find an optimization of a problem. First, a model data of E-J characteristics in which the pinning parameters were given was prepared, and it was confirmed that DE can find the given pinning parameters from the model data. Then, DE and mesh method were used to determine the pinning parameters in experimental E-J characteristics of GdBa2CuO7-δ high temperature superconductor. In mesh method, the all combinations of pinning parameters with constant interval for each parameter are calculated, and best set of pinning parameters is selected. It was found that DE shows better performance than mesh method in terms of calculation time and accuracy for determining pinning parameters.

元の言語英語
記事番号012046
ジャーナルJournal of Physics: Conference Series
871
発行部数1
DOI
出版物ステータス出版済み - 7 26 2017
イベント29th International Symposium on Superconductivity, ISS 2016 - Tokyo, 日本
継続期間: 12 13 201612 15 2016

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high temperature superconductors
mesh
current density
intervals
temperature dependence
optimization
electric fields

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

これを引用

Determination of Pinning Parameters in Flux Creep-Flow Model for E-J characteristics of High Temperature Superconductors by using Differential Evolution. / Otabe, E. S.; Taguchi, T.; Tsuruda, Y.; Funaki, Ryohei.

:: Journal of Physics: Conference Series, 巻 871, 番号 1, 012046, 26.07.2017.

研究成果: ジャーナルへの寄稿Conference article

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abstract = "The pinning parameters such as strength of pinning force, temperature dependence of pinning force and so on using in flux creep-flow model to explain electric field vs current density (E-J) characteristics were determined by Differential Evolution (DE). DE is one of the methods in Evolutionary Computation (EC) to find an optimization of a problem. First, a model data of E-J characteristics in which the pinning parameters were given was prepared, and it was confirmed that DE can find the given pinning parameters from the model data. Then, DE and mesh method were used to determine the pinning parameters in experimental E-J characteristics of GdBa2CuO7-δ high temperature superconductor. In mesh method, the all combinations of pinning parameters with constant interval for each parameter are calculated, and best set of pinning parameters is selected. It was found that DE shows better performance than mesh method in terms of calculation time and accuracy for determining pinning parameters.",
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