International Round Robin Test for Critical Current Measurement of RE-Ba-Cu-O Superconducting Tapes

Gen Nishijima; Kozo Osamura; Tatsuoki Nagaishi; Toru Fukushima; Yasuhiro Iijima; Tsutomu Koizumi; Yifei Zhang; Marco Breschi; Xavier Chaud; Hyung Seop Shin; Takanobu Kiss

doi:10.1109/TASC.2018.2801329

International Round Robin Test for Critical Current Measurement of RE-Ba-Cu-O Superconducting Tapes

Gen Nishijima, Kozo Osamura, Tatsuoki Nagaishi, Toru Fukushima, Yasuhiro Iijima, Tsutomu Koizumi, Yifei Zhang, Marco Breschi, Xavier Chaud, Hyung Seop Shin, Takanobu Kiss

Section of Measurement and Control Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

VAMAS TWA 16 promoted an international round robin test (RRT) on critical current (I_c) measurement of RE-Ba-Cu-O (REBCO; RE = rare earth) superconductors to establish the transport I _c measurement method in liquid nitrogen bath without an external magnetic field. Ten laboratories from five countries participated in the RRT and tested commercially available REBCO superconductors. I_c and measurement conditions were reported. In parallel, intrinsic I_c nonuniformity of the superconductors were evaluated by reel-to-reel scanning Hall-probe microscopy for 10-m conductors. Statistical analyses of I_c provided uncertainty of the measurement method. Combined standard uncertainty was analyzed considering the intrinsic nonuniformity of I_c. The analysis indicated that the intrinsic nonuniformity has the largest contribution to the uncertainty of I_c.

Original language	English
Article number	8279566
Journal	IEEE Transactions on Applied Superconductivity
Volume	28
Issue number	4
DOIs	https://doi.org/10.1109/TASC.2018.2801329
Publication status	Published - Jun 2018

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TASC.2018.2801329

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title = "International Round Robin Test for Critical Current Measurement of RE-Ba-Cu-O Superconducting Tapes",

abstract = "VAMAS TWA 16 promoted an international round robin test (RRT) on critical current (Ic) measurement of RE-Ba-Cu-O (REBCO; RE = rare earth) superconductors to establish the transport I c measurement method in liquid nitrogen bath without an external magnetic field. Ten laboratories from five countries participated in the RRT and tested commercially available REBCO superconductors. Ic and measurement conditions were reported. In parallel, intrinsic Ic nonuniformity of the superconductors were evaluated by reel-to-reel scanning Hall-probe microscopy for 10-m conductors. Statistical analyses of Ic provided uncertainty of the measurement method. Combined standard uncertainty was analyzed considering the intrinsic nonuniformity of Ic. The analysis indicated that the intrinsic nonuniformity has the largest contribution to the uncertainty of Ic.",

author = "Gen Nishijima and Kozo Osamura and Tatsuoki Nagaishi and Toru Fukushima and Yasuhiro Iijima and Tsutomu Koizumi and Yifei Zhang and Marco Breschi and Xavier Chaud and Shin, {Hyung Seop} and Takanobu Kiss",

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AU - Nishijima, Gen

AU - Osamura, Kozo

AU - Nagaishi, Tatsuoki

AU - Fukushima, Toru

AU - Iijima, Yasuhiro

AU - Koizumi, Tsutomu

AU - Zhang, Yifei

AU - Breschi, Marco

AU - Chaud, Xavier

AU - Shin, Hyung Seop

AU - Kiss, Takanobu

PY - 2018/6

Y1 - 2018/6

N2 - VAMAS TWA 16 promoted an international round robin test (RRT) on critical current (Ic) measurement of RE-Ba-Cu-O (REBCO; RE = rare earth) superconductors to establish the transport I c measurement method in liquid nitrogen bath without an external magnetic field. Ten laboratories from five countries participated in the RRT and tested commercially available REBCO superconductors. Ic and measurement conditions were reported. In parallel, intrinsic Ic nonuniformity of the superconductors were evaluated by reel-to-reel scanning Hall-probe microscopy for 10-m conductors. Statistical analyses of Ic provided uncertainty of the measurement method. Combined standard uncertainty was analyzed considering the intrinsic nonuniformity of Ic. The analysis indicated that the intrinsic nonuniformity has the largest contribution to the uncertainty of Ic.

AB - VAMAS TWA 16 promoted an international round robin test (RRT) on critical current (Ic) measurement of RE-Ba-Cu-O (REBCO; RE = rare earth) superconductors to establish the transport I c measurement method in liquid nitrogen bath without an external magnetic field. Ten laboratories from five countries participated in the RRT and tested commercially available REBCO superconductors. Ic and measurement conditions were reported. In parallel, intrinsic Ic nonuniformity of the superconductors were evaluated by reel-to-reel scanning Hall-probe microscopy for 10-m conductors. Statistical analyses of Ic provided uncertainty of the measurement method. Combined standard uncertainty was analyzed considering the intrinsic nonuniformity of Ic. The analysis indicated that the intrinsic nonuniformity has the largest contribution to the uncertainty of Ic.

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International Round Robin Test for Critical Current Measurement of RE-Ba-Cu-O Superconducting Tapes

Abstract

All Science Journal Classification (ASJC) codes

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