Plasma and Fusion Research
Volume 6, 2406120 (2011)
Regular Articles
- 1)
- The Graduate University for Advanced Studies, Toki 509-5292, Japan
- 2)
- National Institute for Fusion Science, Toki 509-5292, Japan
Abstract
Tomographic reconstruction for a tangentially viewing two-dimensional (2D) imaging system is studied. A method to calculate the geometry matrix in 2D tomography is introduced. An algorithm based on a Phillips-Tikhonov (P-T) type regularization method is investigated, and numerical tests using the P-T method are conducted with both tokamak and Heliotron configurations. The numerical tests show that the P-T method is not sensitive to the added noise levels and the emission profiles with higher mode numbers can be reconstructed with adequate resolution. The results indicate that this method is suitable for 2D tomographic reconstruction for a tangentially viewing vacuum ultraviolet telescope system.
Keywords
tomography, reconstruction, VUV, GCV, LHD
Full Text
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This paper may be cited as follows:
Tingfeng MING, Satoshi OHDACHI, Yasuhiro SUZUKI and LHD Experiment Group, Plasma Fusion Res. 6, 2406120 (2011).