Wendelstein 7-X 上事件同步高重复频率 Thomson 散射系统的首批结果
等离子体物理
2020-01-29 v2
摘要
Wendelstein 7-X (W7-X) Thomson 散射 (TS) 诊断系统进行了升级，以瞬时实现千赫兹采样率与可调测量时间。现有的 Nd:YAG 激光器被用于重复发射“脉冲串”，即在短时间间隔内的多个激光脉冲。通过对三台可用激光器的脉冲串进行适当定时，每次脉冲串最多可实现 12 次等间隔的连续测量。脉冲串内的脉冲间隔可在 2 ms 至 33.3 ms (500 kHz - 30 Hz) 之间调节。此外，还开发了一个事件触发系统，用于将脉冲串 Thomson 散射测量与等离子体事件同步。作为一个示例，本文展示了冷冻 H2 弹丸注入后快速电子密度与温度演化的案例，以演示该方法的能力。
引用
@article{arxiv.1907.00492,
title = {First Results from an Event Synchronized -- High Repetition Thomson Scattering System at Wendelstein 7-X},
author = {Hannes Damm and Ekkehard Pasch and Andreas Dinklage and Jürgen Baldzuhn and Sergey Bozhenkov and Kai Jakob Brunner and Florian Effenberg and Golo Fuchert and Joachim Geiger and Jeffrey Harris and Jens Knauer and Petra Kornejew and Thierry Kremeyer and Maciej Krychowiak and Jonathan Schilling and Oliver Schmitz and Evan Scott and Victoria Winters and the Wendelstein 7-X Team},
journal= {arXiv preprint arXiv:1907.00492},
year = {2020}
}
备注
11 pages, 5 figures, To be published as proceeding to the 3rd European Conference on Plasma Diagnostics 2019 in Lisbon in the Proceedings Section of the Journal of Instrumentation (JINST)