Study of the Rogowski coil response in a plasma focus device

15th Latin American Workshop on Plasma Physics; 21st IAEA TM on Research Using Small Fusion Devices

Perusquía, S.^1 ; Castillo, F.^2 ; Reyes, P.G.^1 ; Martínez, H.^2

Facultad de Ciencias, Laboratorio de Física Avanzada, Universidad Autónoma Del Estado de México, Estado de México, Toluca

C.P. 50000, Mexico^1

Instituto de Ciencias Físicas, Laboratorio de Espectroscopia, Universidad Nacional Autónoma de México, A.P. 48 3, Morelos, Cuernavaca

C.P. 62251, Mexico^2

关键词: Coil configurations;    Current pulse;    High intensity;    Needle electrodes;    Normal operations;    Plasma focus devices;    Plasma physics;    Voltage change;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/591/1/012028/pdf
DOI  :  10.1088/1742-6596/591/1/012028

来源: IOP

【 摘 要 】

In plasma physics is very important understand the behaviour and amplitude of high intensity currents. The high intensity current pulses are measured by resistive and inductive sensors. Coil configurations are employed in the same form as inductive sensors. Rogowski coil is a representative example; that coil consists of a toroidal-shaped winding. In this work we built a Rogowski coil. The coil operation was realized in a plasma focus device. The results show a good performance. We also used the coil to measure the current and voltage changes with respect to time, during the normal operation of the plasma focus device. The maximum value of the current (348kA) was obtained. As a complementary work, we analysed the results by changing the central electrode of the device (needle electrode, gap electrode and plane electrode). It founds that the pinch time is independent of the configuration of the central electrode.