In this paper, we describe a novel pulsed magnet, called Foil Coil, which can deliver a field transverse to the light propagation of more than 10 T over about 0.8 meters operating without cryogenic equipment. It has been designed for linear magnetic birefringence measurements. We report on testing the coil, and also show some physics data taken in vacuum during its commissioning in the framework of the BMV apparatus, with special attention to noise induced by the pulse itself. Finally, we compare the preliminary results obtained here, with data from the previous BMV coil.
Measurement of the angle dependence of magnetostriction in pulsed magnetic fields using a piezoelectric strain gauge
提出了一种在低温下测量毫秒级脉冲磁场中磁致伸缩的高分辨率方法，灵敏度为$1.11\times10^{-11}/\sqrt{\rm Hz}$。将样品粘合到薄压电板，使得当样品的长度改变时，其使压电体应变并引起电压变化。这种方法比光纤布拉格光栅方法更灵敏。它可以同时测量两个轴而不是一个轴。该真空计体积小，用途广泛，可在直流和毫秒脉冲磁场中工作。我们证明了它的使用通过测量钙$_3$钴$_{1.03}$锰$_{0.97}$ O $_6$单晶在脉冲磁场中的磁致伸缩。通过比较我们的数据，新的和以前发表的结果从光纤布拉格光栅磁致伸缩设置，我们确认，这种方法检测磁致伸缩效应。我们还证明了这种技术的小尺寸和多功能性，通过测量角度依赖于在65 T毫秒脉冲磁场中的转子探头中施加的磁场。
Compact nondestructive generator for microsecond-class ultrafast pulsed magnetic fields
Institute for Solid State Physics, University of Tokyo（东京大学固体物理研究所）；Department of Engineering Science, University of Electro-Communications（电气通信大学工程科学系）；Research Center for Materials Nanoarchitechtonics, National Institute for Material Science（国立材料研究所材料纳米结构研究中心）
