MHD Equilibrium Reconstruction Using the Visible Light Tomographic Method with Laplacian Eigenfunction

Kosuke Suzuki, Sadayoshi Murakami, Satoshi Ohdachi, Hiroshi Idei, Kengoh Kuroda, Ryuya Ikezoe, Takumi Onchi

Research output: Contribution to journalArticlepeer-review

Abstract

A tomographic method using tangential visible light is proposed for MHD equilibrium reconstruction via two processes. The first process is a tomographic method to estimate the last-closed-flux-surface (LCFS) in twodimensional poloidal cross-section using a single tangential camera image. Applying the Laplacian eigenfunction series expansion and L1regularization, we can reconstruct the LCFS from relatively sparse and noisy observations. The second method is a free-boundary tokamak equilibrium calculation using the TASK/EQU code, in which we use the estimated plasma surface information as the constraints for the equilibrium calculation. As a result, we develop a new method for identifying equilibrium states using visible light information.

Original languageEnglish
Pages (from-to)2402090-1-2402090-7
JournalPlasma and Fusion Research
Volume16
DOIs
Publication statusPublished - 2021

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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