电磁线圈
螺线管
材料科学
涡流
补偿(心理学)
磁铁
核磁共振
信号(编程语言)
磁化
机械
超导电性
磁场
声学
凝聚态物理
物理
计算机科学
精神分析
量子力学
程序设计语言
心理学
标识
DOI:10.1088/0953-2048/16/1/304
摘要
AC losses measurements have been performed on a coil wound NbTi CICC magnet in pulsed regimes by the pick-up magnetic method. Owing to the complex set of mutually inducting coils and to the very high field variation rates which are needed to simulate plasma disruption conditions, the simple compensation by two concentric pick-up coils normally adopted for solenoid magnetization measurements cannot be used. In fact, appreciable eddy currents are induced in the metallic parts of the system and a huge 'empty coil effect' is observed. Thus, an extra-compensation procedure is applied by subtracting from the compensated pick-up signal the corresponding one measured in 'warm' conditions, i.e., at a temperature slightly over the superconductor Tc. Experimental evidence is presented for the effectiveness of the adopted procedure for data elaboration.
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