螺线管放电过程中CMS磁轭中Eddy Current分布的分析
Analysis of Eddy Current Distributions in the CMS Magnet Yoke During the Solenoid Discharge
摘要：
通量环已被安装在选定的部分磁通量返回轭的4 T超导线圈的紧凑型μ子螺线管（CMS）的检测器正在建设中的欧洲核子研究中心。螺线管放电期间回路中感应的电压将在整个放电过程中在线采样，并离线积分，以提供最大磁场下钢中初始磁通量密度的测量，精度为百分之几。尽管螺线管的放电相当慢（190 s时间常数），但应估计轭元件中感应的涡流的影响。涡流的计算是用矢量场的程序ELEKTRA进行的。报告了计算结果。
英文摘要：
Flux loops have been installed on selected segments of the magnetic flux return yoke of the 4 T superconducting coil of the Compact Muon Solenoid (CMS) detector under construction at CERN. Voltages induced in the loops during discharge of the solenoid will be sampled online during the entire discharge and integrated offline to provide a measurement of the initial magnetic flux density in steel at the maximum field to an accuracy of a few percent. Although the discharge of the solenoid is rather slow (190 s time constant), the influence of eddy currents induced in the yoke elements should be estimated. The calculation of eddy currents is performed with Vector Fields' program ELEKTRA. The results of the calculations are reported.
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