HIGH-POWER SWITCH WITH SI-THYRISTOR FOR THE POWER SUPPLY OF VERY HIGH REPLETION RATE PULSED QUADRUPOLE MAGNET

摘要

A solid-state switch with Static Induction Thyristor (SIThy) is tested as high-power and high-repetition switch for KEKB pulsed magnet power supply. The pulsed quadrupole magnet installed in KEKB [1] positron ring uses the 24 FETs as the switching devices. We replaced these FETs to SIThy for the test. The result of 100kHz switching with SIThy is presented.