Current measurement by Faraday effect on GEPOPU
Current measurement by Faraday effect on GEPOPU
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DOI：
10.1088/1742-6596/511/1/012026
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发表时间：
2014-05
期刊：
影响因子：
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通讯作者：
N. Correa;H. Chuaqui;E. Wyndham;Felipe Veloso;J. Valenzuela;M. Favre;H. Bhuyan
中科院分区：
文献类型：
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作者：
N. Correa;H. Chuaqui;E. Wyndham;Felipe Veloso;J. Valenzuela;M. Favre;H. Bhuyan
介绍了使用 BK7 玻璃的光学电流传感器的设计和校准。电流传感器基于法拉第效应的偏振旋转。 GEPOPU是脉冲功率发生器，双渡越时间120ns，1.5欧姆阻抗，同轴几何形状，进行Z箍缩实验。测量是在智利天主教大学光学和等离子体物理实验室进行的。使用氦氖激光器获得了两种不同光学材料的维尔德常数。获得的值在文献中发表的测量值的实验误差范围内（差异小于 15%）。尝试了两种不同的传感器几何形状。我们展示了其中一种几何形状的初步结果。获得的电流值在测量误差范围内与通过发电机的 Spice 模拟获得的值一致。获得的信号迹线完全无噪声。
The design and calibration of an optical current sensor using BK7 glass is presented. The current sensor is based on the polarization rotation by Faraday effect. GEPOPU is a pulsed power generator, double transit time 120ns, 1.5 Ohm impedance, coaxial geometry, where Z pinch experiment are performed. The measurements were performed at the Optics and Plasma Physics Laboratory of Pontificia Universidad Catolica de Chile. The verdet constant for two different optical materials was obtained using He-Ne laser. The values obtained are within the experimental error bars of measurements published in the literature (less than 15% difference). Two different sensor geometries were tried. We present the preliminary results for one of the geometries. The values obtained for the current agree within the measurement error with those obtained by means of a Spice simulation of the generator. Signal traces obtained are completely noise free.