双脉冲感应腔磁芯自动复位

Auto-reset in cable delay double-pulse induction cavity

对采用电缆延时方法的双脉冲直线感应加速器组元感应腔磁芯的自动复位进行了模拟和实验研究。利用Pspice软件对Blumlein线充电预脉冲积分的影响因素进行了模拟,将预脉冲伏秒值与主脉冲幅度之比定义为"复位脉宽",作为评判预脉冲对感应腔磁芯复位能力的判据。不同负载情况下的高压双脉冲实验结果表明,该判据有较高的准确度,依照判据要求调节Blumlein线负载后,可在基本不影响主脉冲的前提下解决双脉冲感应腔磁芯的复位问题。

Simulations and experiments have been done to find out the suitable circuit parameters,with which the pre-pulse flowing from the Blumlein pulse forming line during the charge cycle can reset the magnetic cores in the double-pulse induction cavity adequately.By the circuit simulations,a new modulus,named ＂the maximum reset pulse-width＂,has been proposed to mark the reset ability of pre-pulse.The veracity of the modulus has been proved by the experiments.By adjusting the load of the Blumlein line according to the requirements of the modulus,the auto-reset problem of cores of the linear induction accelerator cell using ＂cable delay＂ double pulse power system can be solved with the least effect on the primary pulses.