Calibrating method of high voltage and current probe for fast pulse measurements

A calibrating method of high voltage and current probe for fast pulse measurements is presented based on pulse formation principle. A voltage and current generator which used the output line and diode of Flash II accelerator as pulse formation line was built with a self-developed low inductance gas switch and load. A quasi-square waveform, with a rise time of about 3 ns and a half width of 20 ns, was measured when the voltage and current on the load are 0.75 kA and 13.5 kV, respectively. The voltage and current probes of diode of flash II accelerator were then calibrated, and their time responses were less than 4 ns. The calibrating method can generate a fast pulse for high voltage and current probe calibration in practical circumstance, it can also calibrate the probes of transmission-line pulse power devices.