Good question - I worked at the ASDEX Upgrade (AUG), also operated by the IPP but a tokamak instead of a stellarator: At AUG similar images and videos [0] are r

Good question - I worked at the ASDEX Upgrade (AUG), also operated by the IPP but a tokamak instead of a stellarator: At AUG similar images and videos [0] are recorded by IR cameras. These cameras require strong cooling and a magnetic / electric shielding as described in [1]. Per plasma discharge (~10s) around ~8GB of video data is recorded. There are also fast frame cameras for dust tracking [2] and similar things. I assume the same techniques are applied at Wendelstein. [0] https://www-ncbi-nlm-nih-gov.eaccess.ub.tum.de/pubmed/26628130 https://www-ncbi-nlm-nih-gov.eaccess.ub.tum.de/pubmed/266281... [1] https://www.youtube.com/watch?v=QCK51vqWunU https://www.youtube.com/watch?v=QCK51vqWunU [2] http://iopscience.iop.org/article/10.1088/1741-4326/aa4e56 http://iopscience.iop.org/article/10.1088/1741-4326/aa4e56