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research article

On learning latent dynamics of the AUG plasma state

Kit, A.
•
Jarvinen, A. E.
•
Poels, Y. R. J.  
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March 1, 2024
Physics Of Plasmas

In this work, we demonstrate the utility of state representation learning applied to modeling the time evolution of electron density and temperature profiles at ASDEX-Upgrade (AUG). The proposed model is a deep neural network, which learns to map the high dimensional profile observations to a lower dimensional state. The mapped states, alongside the original profile's corresponding machine parameters, are used to learn a forward model to propagate the state in time. We show that this approach is able to predict AUG discharges using only a selected set of machine parameters. The state is then further conditioned to encode information about the confinement regime, which yields a simple baseline linear classifier, while still retaining the information needed to predict the evolution of profiles. We, then, discuss the potential use cases and limitations of state representation learning algorithms applied to fusion devices.

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Type
research article
DOI
10.1063/5.0174128
Web of Science ID

WOS:001180029000010

Author(s)
Kit, A.
Jarvinen, A. E.
Poels, Y. R. J.  
Wiesen, S.
Menkovski, V.
Fischer, R.
Dunne, M.
Corporate authors
ASDEX-Upgrade Team
Date Issued

2024-03-01

Published in
Physics Of Plasmas
Volume

31

Issue

3

Article Number

032504

Subjects

Physical Sciences

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
SPC  
FunderGrant Number

European Union via the Euratom Research and Training Programme

101052200-EUROfusion

Available on Infoscience
April 3, 2024
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/206880
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