Adaptive mapping of the plasma operational space of ASDEX Upgrade for disruption prediction

Issue title: Selected Papers from the 15th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2011)

Article type: Research Article

Authors: Aledda, Raffaele^a | Cannas, Barbara^a | Fanni, Alessandra^a | Sias, Giuliana^{a; *} | Pautasso, Gabriella^b | ASDEX Upgrade team, The^b

Affiliations: [a] Department of Electric and Electronic Engineering, University of Cagliari, Cagliari, Italy | [b] Max-Planck-Institüt für Plasmaphysik, Garching, Germany

Correspondence: [*] Corresponding author: Giuliana Sias, Department of Electric and Electronic Engineering, University of Cagliari, Piazza d'Armi, 09126, Cagliari, Italy. Tel.: +39 070 675 5878; Fax: +39 070 675 5900; E-mail: [email protected]

Abstract: The Self-Organizing Map is a computational method for the visualization and analysis of high-dimensional data. Self Organizing Maps have been applied to ASDEX Upgrade data to define an ordered mapping of an 8-dimensional plasma parameter space onto a regular, 2-dimensional grid. The map has been used to track the plasma trajectory during the experiments and monitor the disruption risk. In order to face with ever new operational conditions, a periodical updating of the Self Organizing Map is proposed.

Keywords: Disruption prediction, Self Organizing Map, adaptive retraining

DOI: 10.3233/JAE-2012-1441

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 39, no. 1-4, pp. 43-49, 2012