Reconstruction of 3-D Radiation Profile From 2-D Images Viewed by IR Imaging Video Bolometers With SVD

Author

Sano, Ryuichi ; Peterson, Byron Jay ; Kobayashi, Masato ; Teranishi, Masaru ; Iwama, Naofumi ; Mukai, Koji ; Pandya, Shwetang N.

Author_Institution

Dept. of Fusion Sci., Grad. Univ. for Adv. Studies, Toki, Japan

Volume

42

Issue

10

fYear

2014

fDate

Oct. 2014

Firstpage

2860

Lastpage

2861

Abstract

Radiation is one of the major paths of power loss from fusion plasmas. Since the radiation distribution has a complex 3-D structure in helical devices, such as a large helical device (LHD), 3-D radiation measurements, are required for understanding the power balance of fusion plasmas. IR imaging video bolometers (IRVBs) installed in the LHD were examined as one system of 3-D imaging using a projection matrix that is obtained under the assumption of plasma periodicity in the toroidal direction, and using the phantoms obtained numerically with the EMC3-EIRENE code as the impurity distribution. The reconstructed profiles indicate the capability of the current system of IRVBs for imaging the 3-D radiation distribution in LHD.

Keywords

numerical analysis; plasma diagnostics; plasma impurities; plasma toroidal confinement; stellarators; 2D images; 3D radiation distribution; 3D radiation measurements; 3D radiation profile reconstruction; EMC3-EIRENE code; IR Imaging Video Bolometers; IR imaging video bolometers; SVD; complex 3D structure; current system; fusion plasmas; impurity distribution; large helical device; plasma periodicity; projection matrix; radiation distribution; Bolometers; Detectors; Image reconstruction; Phantoms; Plasma measurements; Plasmas; Plasma diagnostics; Plasma diagnostics.;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2014.2330605

Filename

6846328