加速器中内置式预脉冲抑制电感的研制
Development of inner prepulse restraining inductance of accelerator
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摘要: 介绍了预脉冲抑制电感值的选取、大体积电感值的计算、电感在传输线内筒中的绝缘设计和主脉冲在电感上的传输时间以及等效阻抗。根据对电感值与传输线、输出线电压和二极管电流之间关系的数值模拟,预脉冲抑制电感应取值5 μH，并通过实验给出了屏蔽筒中大型电感的计算方法。根据对电感管与传输线内筒之间以及电感匝间电场强度的分析和数值模拟，确定了电感长度630 mm、外径1 160 mm和管径102 mm。通过对电感与传输线内筒之间构成的带绕螺旋传输线等效PSpcie的模拟计算，得到了电感传输线支路上的单次传输时间为349 ns，大于主脉冲的宽度；在主脉冲期间，带绕传输线的阻抗大于25 Ω，也远大于传输线的阻抗。通过内置式预脉冲抑制电感已向水介质同轴线中的气体开关引入了触发高压和工作气体。Abstract: The prepulse restraining inductance was confirmed to be 5 μH according to the numerical simulation based on the relation of pulse transmitting line voltage，pulse outer line voltage and diode current with inductance value. The method for calculating the large-scale sparse inductance inside a shield was put forward by experimental study. The inductance with length of 630 mm, the coil of 1 160 mm in diameter and the inductance pipe of 102 mm in diameter were confirmed according to the simulated electric field between the inductance and the inner shield of PTL and windings. By numerically simulating the equivalent circuit of spiral water PTL composed of inductance and inner shield, the transmitting time of 349 ns was obtained, which was larger than the half -peak breadth of main pulse. Duri
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