Vector and Scalar Tomography of Compact Toroid Plasmas

作者：You S^*; Tanabe H; Ono Y; Balandin A L

来源：Journal of Fusion Energy, 2010, 29(6): 592-595.

DOI：10.1007/s10894-010-9317-8

• Spectroscopy
• Tomography
• Plasma flow
• Spheromak
• Compact toroids

Multichannel spectroscopic diagnostics have been installed on the TS-4 compact toroid experiment at the University of Tokyo with view chords designed for measuring 2D ion bulk flow velocities and temperatures. Computerized vector tomography reconstructs velocities from the Doppler-shifted line shapes and scalar emissivity from the scalar tomography of the zeroth moment measurements. The first results show bulk ion flow field in a 2D plane with significant cross-field flow possibly due to the slingshot effect during reconnection merging of two counter-helicity spheromaks. The results are limited by a center column and available viewports in the vacuum chamber. This proof-of-principle experiment shows that, with increased access, 3D velocity flow fields can be completely reconstructed in compact toroid plasma experiments.

• 出版日期2010-12