Seminar: Graduate Seminar
Spiral Generator: Characterization and Modelling
Date:
December,18,2025
Start Time:
10:00 - 11:00
Location:
506, Zisapel Building
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Lecturer:
Yan Zeltser
Research Areas:
| A Spiral Generator (SG) is a pulsed power source introduced in the middle of the previous century. SGs are simple to build and to operate, and are therefore favored and widely used in research and applications that require high-voltage (HV) pulses of several tens of kV and pulse duration of 10-9-10-7 s. Over the years, several models for SG operation have been proposed, but none of them reliably predict the output voltage waveform in a way that can be used during the design process. In this study, I present results of experiments on several SGs of varying sizes and geometries, loads, primary spark gap triggering switches, and with or without ferrite rods. An improved model of the SG, built upon an equivalent circuit of a transformer, is derived based on experimental observations. A procedure for measuring the elements in the circuit model is demonstrated. Simulation results of the suggested model are compared to experimental results and show good agreement. Finally, analytic approximations for the circuit elements of the model are derived and design considerations of the SG for maximal voltage multiplication are established.
M.Sc Student Under the supervision ofย Levi Schachter and Yakov Krasik
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