Full Toroidal Imaging of Non-axisymmetric Plasma Material Interaction in the National Spherical Torus eXperiment
Authors: Filippo Scotti, A.L. Roquemore, and V. A. Soukhanovskii
Abstract:
A pair of two dimensional fast cameras with a wide angle view (allowing a full radial and toroidal coverage of
the lower divertor) were installed in the National Spherical Torus eXperiment (NSTX) in order to monitor nonaxisymmetric
effects. A custom polar remapping procedure and an absolute photometric calibration enabled
easier visualization and quantitative analysis of non-axisymmetric plasma material interaction (e.g. strike
point splitting due to application of 3D fields and effects of toroidally asymmetric plasma facing components).
__________________________________________________
Submitted to: Review of Scientific Instruments (April 2012) Submitted to: High Temperature Plasma Diagnostic Conference, Monterey, California (May 6-10, 2012)
__________________________________________________
Download PPPL-4778 (pdf 9.74 MB 3 pp)
__________________________________________________