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Reconstruction of plasma shape and eddy current profile based on modified cauchy condition surface method in merging spherical tokamak

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/75988

Title: Reconstruction of plasma shape and eddy current profile based on modified cauchy condition surface method in merging spherical tokamak
Authors: Ushiki, Tomohiko Browse this author
Inomoto, Michiaki Browse this author
Itagaki, Masafumi Browse this author →KAKEN DB
Keywords: Spherical tokamak
Merging start-up
Modified CCS method
Plasma shape reconstruction
Eddy current
Issue Date: Nov-2017
Publisher: Elsevier
Journal Title: Fusion engineering and design
Volume: 122
Start Page: 35
End Page: 41
Publisher DOI: 10.1016/j.fusengdes.2017.09.012
Abstract: The spherical tokamak merging start-up is one of the central solenoid-free start-up method. For controlling the merging actively, it is essential to identify the plasma shapes during the merging process. In the present work, the modified Cauchy condition surface method is applied to demonstrate the reconstruction of the plasma boundary shapes as well as the eddy current profiles at three different representative phases in the merging start-up process (a. initial phase, b. merging phase, c. after merging). Profiles of magnetic flux and plasma boundary have been reconstructed accurately using noiseless magnetic sensor signals and reconstructed with a fairly good accuracy using sensor signals with 3% noise. The eddy current profile have been also reconstructed with a fairly accuracy.
Rights: © 2017, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
http://creativecommons.org/licenses/by-nc-nd/4.0/
Type: article (author version)
URI: http://hdl.handle.net/2115/75988
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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