High speed visible imaging allows to visualize the 2-dimensional dynamics of fast phenomena in the boundary layer of fusion plasmas. Here we describe the two high speed visible cameras currently operating in the JET tokamak, enabling the simultaneous observation of a large fraction of the JET tokamak vacuum vessel with the appropriate configuration for many different plasma phenomena. As an example we discuss recent observations on the spatial and temporal dynamics of visible emission at the outer wall during Edge Localized Modes (ELMs) and the penetration of Shattered Injected Pellet (SPI) into the plasma.

中文翻译：

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在类似JET ITER的壁托卡马克中的大功率氘等离子体实验中使用快速可见相机观察

高速可见成像可以可视化聚变等离子体边界层中快速现象的二维动力学。在这里，我们介绍了目前在JET托卡马克中运行的两台高速可见摄像机，它们能够同时观察JET托卡马克真空容器的大部分，并针对许多不同的等离子体现象进行适当配置。作为示例，我们讨论了在边缘局部化模式（ELM）和破碎的注射小球（SPI）渗透到等离子体中外壁可见发射的时空动态的最新观察。