A 2.5-MV subnanosecond pulser with laser-triggered spark gap for the generation of high-brightness electron bunches
A 2.5-MV subnanosecond pulser with laser-triggered spark gap for the generation of high-brightness electron bunches
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DOI：
10.1109/ppc.2003.1277947
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发表时间：
2004
影响因子：
1.5
通讯作者：
Seth Brussaard;D. Vyuga
中科院分区：
文献类型：
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作者：
Seth Brussaard;D. Vyuga
产生超短高亮度电子束，适用于注入单通自由电子激光器或激光尾流场加速器，需要加速场>1GV/m。为了产生这样的场，建立了一个2.5 mv亚纳秒脉冲发生器并进行了测试。脉冲发生器基于特斯拉变压器，输出电压高达2.5 MV。输出脉冲通过激光触发的火花隙传递到脉冲形成线。火花间隙是用5ns（倍频Nd:Yag）激光脉冲触发的，在线的末端产生5ns的抖动。特斯拉变压器后的脉冲形成线经过调整，可以精确地形成脉冲。该系统的输出脉冲持续时间为1ns，上升时间约为150ps。输出电压可变化，最大脉冲高度可达2.4 MV。
Generation of ultra-short high-brightness electron bunches, suitable for injection into single-pass free electron lasers or laser wakefield accelerators, requires accelerating fields >1GV/m. To generate such fields, a 2.5-MV subnanosecond pulser was built and tested. The pulser is based on a Tesla transformer with an output voltage of up to 2.5 MV. The output pulse is transferred through a laser-triggered spark gap to a pulse-forming line. The spark gap is triggered using a 5-ns (frequency doubled Nd:Yag) laser pulse, resulting in a jitter of 5 ns at the end of the line. The pulse-forming line after the Tesla transformer was tuned to allow accurate shaping of the pulse. The output pulse of the system has a duration of 1 ns and a risetime of approximately 150ps. The output voltage can be varied and a maximum pulse height of 2.4 MV was achieved.