Plasma and Fusion Research
Online ISSN : 1880-6821
ISSN-L : 1880-6821
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Two Dimensional Imaging Measurement of Magnetic Reconnection Outflow in the TS-4 Toroidal Plasma Merging Experiment
Hiroshi TANABEHirotaka OKAMasanobu ANNOURAAkihiro KUWAHATAKazutake KADOWAKIYasuhiro KAMINOUSetthivoine YOUAlexander BALANDINMichiaki INOMOTOYasushi ONO
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2013 Volume 8 Pages 2405088

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Abstract

A novel 2D toroidal plasma flow velocimetry has been developed using tomographic reconstruction technique. The 2D imaging of local (R-Z) toroidal velocity is achieved by the vector tomographic reconstruction technique and multi-chord 2D spectroscopy by 35-channel optical fiber array. Numerical simulation for reconstruction of bi-directional toroidal velocity profile suggests that the cost-effective arrangement of the optical fiber for a toroidal plane is 7. We installed the system with 7 × 5 chords arrangement to the TS-4 device. This system successfully measured 2D bi-directional toroidal velocity profile around X point with 10% accuracy during the counter-helicity magnetic reconnection experiment.

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© 2013 by The Japan Society of Plasma Science and Nuclear Fusion Research
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