Speaker
Description
A pulsed power supply based on a high-voltage op-tically triggered thyristor has been developed for the nonlinear kicker (NLK) magnet of the off-axis injec-tion system at the Hefei Advanced Light Facility (HALF). The NLK requires a short high-current pulse with a waveform close to a half-sinusoidal waveform, fast current rise, and low distortion. An LC resonant topology was adopted and an optically triggered thy-ristor was used as the main switch. A saturable induc-tor was introduced to suppress high-frequency oscilla-tions during the current rise. Experimental results show that the developed system can generate a pulse width below 3.2 μs with a peak current of 5 kA and a current rise rate of about 6.25 kA/μs. The output wave-form is closer to the required half-sinusoidal profile than that obtained with a conventional thyristor-based design, demonstrating the suitability of the proposed power supply for kicker magnet applications in ad-vanced light-source facilities.
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