Plasma and Fusion Research
Online ISSN : 1880-6821
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Investigation of the Noise Effect on Tomographic Reconstructions for a Tangentially Viewing Vacuum Ultraviolet Imaging Diagnostic
Tingfeng MINGSatoshi OHDACHIYasuhiro SUZUKILHD Experiment Group
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2011 Volume 6 Pages 2406120

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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.

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© 2011 by The Japan Society of Plasma Science and Nuclear Fusion Research
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