학술논문
Current Research into Applications of Tomography for Fusion Diagnostics
Document Type
Author
Mlynar, Jan; Andersson Sundén, Erik; Binda, Federico, 1987; Cecconello, Marco; Conroy, Sean; Dzysiuk, Nataliia; Ericsson, Göran; Eriksson, Jacob, Dr, 1985; Hellesen, Carl, 1980; Hjalmarsson, Anders; Possnert, Göran, 1951; Sjöstrand, Henrik, 1978; Skiba, Mateusz, 1985; Weiszflog, Matthias; Zychor, I.
Source
Journal of fusion energy. 38(3-4):458-466
Subject
Language
English
ISSN
0164-0313
1572-9591
1572-9591
Abstract
Retrieving spatial distribution of plasma emissivity from line integrated measurements on tokamaks presents a challenging task due to ill-posedness of the tomography problem and limited number of the lines of sight. Modern methods of plasma tomography therefore implement a-priori information as well as constraints, in particular some form of penalisation of complexity. In this contribution, the current tomography methods under development (Tikhonov regularisation, Bayesian methods and neural networks) are briefly explained taking into account their potential for integration into the fusion reactor diagnostics. In particular, current development of the Minimum Fisher Regularisation method is exemplified with respect to real-time reconstruction capability, combination with spectral unfolding and other prospective tasks.