Plasma and Fusion Research
Volume 8, 2402037 (2013)
Regular Articles
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
- 1)
- Kurchatov Institute, Moskow 123182, Russia
- 2)
- Graduate University for Advanced Studies, 322-6 Oroshi-cho, Toki 509-5292, Japan
Abstract
The InfraRed imaging Video Bolometer (IRVB) measures the radiation from the plasma in two dimensions, giving an image of the plasma radiation power loss. Using a geometry matrix calculated from a model of the LHD first wall, the IRVB sightline geometry and a three dimensional (3D) plasma grid, a synthetic instrument is developed using the 3D carbon impurity radiation results of the EMC3-EIRENE edge impurity transport code as an input. The output of the synthetic instrument are images of the plasma radiation at the IRVB foil due to the EMC3-EIRENE code, which are qualitatively compared with preliminary experimental images from the IRVB. Such a comparison for detached discharges in LHD in which an externally induced m/n = 1/1 magnetic island is applied shows that when the magnetic island is moved 36 degrees toroidally the enhanced radiation in the x-points of the magnetic island also moves as predicted by the EMC3-EIRENE code.
Keywords
bolometer, imaging, plasma radiation, LHD, synthetic instrument
Full Text
References
- [1] K.F. Mast et al., Rev. Sci. Instrum. 62, 744 (1991).
- [2] B.J. Peterson, Rev. Sci. Instrum. 71, 3696 (2000).
- [3] B.J. Peterson et al., Rev. Sci. Instrum. 74, 2040 (2003).
- [4] Y. Feng et al., Contrib. Plasma Phys. 44, 57 (2004).
- [5] D. Reiter et al., Fusion Sci. Technol. 47, 172 (2005).
- [6] www.flir.com
- [7] M. Kobayashi et al., Phys. Plasmas 17, 056111 (2010).
- [8] B.J. Peterson et al., J. Nucl. Mater. 415, S1147 (2011).
- [9] E.A. Drapiko et al., Nucl. Fusion 51, 073005 (2011).
This paper may be cited as follows:
Byron J. PETERSON, Evgeny A. DRAPIKO, Kiyofumi MUKAI, Masahiro KOBAYASHI, Shwetang N. PANDYA, Ryuichi SANO and the LHD Experiment Group, Plasma Fusion Res. 8, 2402037 (2013).