[16a-318-1~11] 11.3 Critical Current, Superconducting Power Applications

[16a-318-6] Measurement and analysis of spatial variation of in-field critical currents in PLD processed long length REBCO coated conductors

Takahiro Fukuzaki¹, Shohei Noda¹, Kohei Higashikawa¹, Takumi Suzuki¹, Masayoshi Inoue¹, Mitsunori Igarashi², Kazuomi Kakimoto², Yasuhiro Iijima², 〇Takanobu Kiss¹ (1.Kyushu Univ., 2.Fujikura Ltd.)

Keywords:superconductor, critical current, coated conductor

We have succeeded in measuring local critical current (I_c) variation in PLD processed 40-m-long coated conductors (CCs) up to 4 T of external fields at 77 K and sub-cooled LN temperature. These results allow us to clarify the limiting factor of in-field I_c fluctuation in the long length CCs. Influence of process conditions for introducing artificial pinning centers is also discussed from the view point of statistical variation of the I_c distribution.