Deep Learning for Plasma Tomography and Disruption Prediction From Bolometer Data

The use of deep learning is facilitating a wide range of data processing tasks in many areas. The analysis of fusion data is no exception since there is a need to process large amounts of data collected from the diagnostic systems attached to a fusion device. Fusion data involve images and time series and are a natural candidate for the use of convolutional and recurrent neural networks. In this article, we describe how convolutional neural networks can be used to reconstruct the plasma radiation profile, and we discuss the potential of using RNNs for disruption prediction based on the same input data. Both approaches have been applied at the Joint European Torus (JET) using data from a multichannel diagnostic system. Similar approaches can be applied to other fusion devices and diagnostics.