A compact, low jitter, nanosecond rise time, high voltage pulse generator with variable amplitude.
A compact, low jitter, nanosecond rise time, high voltage pulse generator with variable amplitude.
复制标题
DOI：
10.1063/1.4737146
复制
发表时间：
2012-07
期刊：
影响因子：
--
通讯作者：
Jiubing Mao;Xin Wang;D. Tang;Huayi Lv;Chengxin Li;Yanhua Shao;Lan Qin
中科院分区：
文献类型：
--
作者：
Jiubing Mao;Xin Wang;D. Tang;Huayi Lv;Chengxin Li;Yanhua Shao;Lan Qin
本文开发了一种紧凑、低抖动、纳秒上升时间、命令触发、高峰值功率的气体开关脉冲发生器系统，用于高能物理实验。该系统的主要组件是高压电容器、火花隙开关和内置于结构中的 R = 50 Ω 负载电阻，以获得快速高功率脉冲。脉冲驱动单元由真空平面三极管和一堆雪崩晶体管组成，由使用 555 定时器电路实现的触发脉冲控制单元产生的单个或多个 TTL（晶体管-晶体管逻辑）电平脉冲命令触发。控制单元还接受用户输入的TTL触发信号。脉冲驱动单元中的真空平面三极管闭合第一级开关，用于驱动火花隙，减少抖动。通过调节高压电容充电电源的充电电压，脉冲幅度从5 kV到10 kV变化，上升时间<3 ns，最大峰值电流高达200 A（进入50 Ω）。脉冲发生器系统的抖动小于1 ns。最大脉冲重复率设置为 10 Hz，仅受气体开关和可用电容器恢复时间的限制。
In this paper, a compact, low jitter, nanosecond rise time, command triggered, high peak power, gas-switch pulse generator system is developed for high energy physics experiment. The main components of the system are a high voltage capacitor, the spark gap switch and R = 50 Ω load resistance built into a structure to obtain a fast high power pulse. The pulse drive unit, comprised of a vacuum planar triode and a stack of avalanche transistors, is command triggered by a single or multiple TTL (transistor-transistor logic) level pulses generated by a trigger pulse control unit implemented using the 555 timer circuit. The control unit also accepts user input TTL trigger signal. The vacuum planar triode in the pulse driving unit that close the first stage switches is applied to drive the spark gap reducing jitter. By adjusting the charge voltage of a high voltage capacitor charging power supply, the pulse amplitude varies from 5 kV to 10 kV, with a rise time of <3 ns and the maximum peak current up to 200 A (into 50 Ω). The jitter of the pulse generator system is less than 1 ns. The maximum pulse repetition rate is set at 10 Hz that limited only by the gas-switch and available capacitor recovery time.