Measurements of Magnetic Field Harmonics in Superconductor Coil Wound by Surface Winding Technology
Measurements of Magnetic Field Harmonics in Superconductor Coil Wound by Surface Winding Technology
复制标题
表面绕制技术绕制超导线圈的磁场谐波测量
DOI：
10.1109/tasc.2011.2180295
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发表时间：
2012
影响因子：
1.8
通讯作者：
K. Noda
中科院分区：
文献类型：
--
作者：
N. Amemiya;S. Mizuta;Taketsune Nakamura;T. Ogitsu;T. Orikasa;T. Kurusu;T. Obana;K. Noda
采用表面绕线技术（直接绕线技术）测量了用NbTi圆线缠绕的偶极磁体在24层线圈中的磁场谐波（磁场的多极分量）。将线圈逐层缠绕，在线圈缠绕4层、10层、16层、20层、24层时，采用旋转拾取线圈系统进行磁场测量。实测磁场谐波与理论值进行了比较。当在线圈中心测量时，其误差即实测值与理论值之差并不随绕线层数的增加而显著增加。在线圈末端附近测量的较大误差应该是由电线的位置误差引起的，这是目测到的。
Magnetic field harmonics (multi-pole component of magnetic field) were measured in a 24-layer coil for a dipole magnet wound with NbTi round wires by using the surface winding technology (direct winding technology). The coil was wound layer by layer, and the magnetic field measurements were carried out by using rotating pick-up coil system, when the 4 layers, 10 layers, 16 layers, 20 layers, and 24 layers of the coil were wound. The measured magnetic field harmonics were compared with theoretical values. The error, which is the difference between the measured value and theoretical one, does not increase substantially with increasing number of wound layers when measured at the center of the coil. Larger errors measured near the coil end should have been caused by the position errors of wires, which was observed visually.