HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >

Three-dimensional Cauchy-condition surface method to identify the shape of the last closed magnetic surface in the Large Helical Device

Files in This Item:
PPCF53-10_105007.pdf5.95 MBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Three-dimensional Cauchy-condition surface method to identify the shape of the last closed magnetic surface in the Large Helical Device
Authors: Itagaki, Masafumi Browse this author →KAKEN DB
Maeda, Tadaaki Browse this author
Ishimaru, Takeshi Browse this author
Okubo, Gaku Browse this author
Watanabe, Kiyomasa Browse this author
Seki, Ryosuke Browse this author
Suzuki, Yasuhiro Browse this author
Keywords: nuclear fusion
plasma boundary
last closed magnetic surface
Cauchy condition surface method
magnetic sensor
vector potential
vacuum field
boundary integral equation
Issue Date: Oct-2011
Publisher: IOP Publishing
Journal Title: Plasma Physics and Controlled Fusion
Volume: 53
Issue: 10
Start Page: 105007
Publisher DOI: 10.1088/0741-3335/53/10/105007
Abstract: Kurihara's Cauchy-condition surface (CCS) method, originally developed for axisymmetric tokamak plasma, has been expanded to reconstruct the 3-D magnetic field profile outside the non-axisymmetric plasma in the Large Helical Device (LHD). The boundary integral equations (BIE) in terms of 3-D vector potential for magnetic field sensors, flux loops and points along the CCS are solved simultaneously. In the BIE for a flux loop, the portions related to the fundamental solution are integrated along the loop. The rotational symmetry of the plasma is incorporated into the formulation to reduce the number of unknowns. The reconstructed magnetic field caused only by the plasma current agree fairly well with the reference solution for the LHD, while a good agreement is observed when adding the coil current effect to the magnetic field. The magnetic field line tracing using the reconstructed field indicates the plasma boundary (the outer surface of the stochastic region) precisely and the last closed magnetic surface agrees fairly well with the reference one.
Rights: This is an author-created, un-copyedited version of an article accepted for publication in Plasma Physics and Controlled Fusion. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at 10.1088/0741-3335/53/10/105007.
Type: article (author version)
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)

Submitter: 板垣 正文

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University