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 Icmeasurement 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. Icand measurement conditions were reported. In parallel, intrinsic Icnonuniformity of the superconductors were evaluated by reel-to-reel scanning Hall-probe microscopy for 10-m conductors. Statistical analyses of Icprovided 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.
International Round Robin Test for Critical Current Measurement of RE-Ba-Cu-O Superconducting Tapes / Nishijima, Gen*; Osamura, Kozo; Nagaishi, Tatsuoki; Fukushima, Toru; Iijima, Yasuhiro; Koizumi, Tsutomu; Zhang, Yifei; Breschi, Marco; Chaud, Xavier; Shin, Hyung-Seop; Kiss, Takanobu. - In: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY. - ISSN 1051-8223. - STAMPA. - 28:4(2018), pp. 8279566.1-8279566.5. [10.1109/TASC.2018.2801329]
International Round Robin Test for Critical Current Measurement of RE-Ba-Cu-O Superconducting Tapes
Breschi, Marco;
2018
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 Icmeasurement 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. Icand measurement conditions were reported. In parallel, intrinsic Icnonuniformity of the superconductors were evaluated by reel-to-reel scanning Hall-probe microscopy for 10-m conductors. Statistical analyses of Icprovided 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
