超電導多芯線の大振幅パルス磁界における損失
1983 年 18 巻 3 号 p. 132-139
詳細
1983 年 18 巻 3 号 p. 132-139
A theoretical study is made on the ac loss in multifilamentary superconducting wires subjected to magnetic-field pulses with large amplitudes. The loss is calculated taking account of the electromagnetic properties of the wires at high magnetic-fields, e.g., the effects of the magnetoresistance of Cu matrices and the degradation of the critical current of NbTi filaments. It is shown for a slow sweep-rate that these effects make the saturation condition shift to the side of smaller amplitude of the applied field, so that the saturation condition approaches to a usual operation condition of pulse magnets. General features of the ac loss are shown on the contour maps, including the dependences of the wire parameters.
