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TJ-II:Magnetic coordinates: Difference between revisions
TJ-II:Magnetic coordinates (view source)
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# Cartesian (''X'', ''Y'', ''Z'') with its origin at the centre of the TJ-II device, the X-axis pointing due East, the Y-axis due North, and the ''Z''-axis up. | # Cartesian (''X'', ''Y'', ''Z'') with its origin at the centre of the TJ-II device, the X-axis pointing due East, the Y-axis due North, and the ''Z''-axis up. | ||
# Cylindrical (''R'', ''φ'', ''Z''), where ''R<sup>2</sup>'' = ''X<sup>2</sup>'' + ''Y<sup>2</sup>'' and tan ''φ'' = ''Y/X''. | # [[Toroidal co-ordinates|Cylindrical]] (''R'', ''φ'', ''Z''), where ''R<sup>2</sup>'' = ''X<sup>2</sup>'' + ''Y<sup>2</sup>'' and tan ''φ'' = ''Y/X''. | ||
In order to make comparisons between diagnostics, it is useful to convert these real-space co-ordinates to flux co-ordinates. This co-ordinate transform depends on the particular magnetic configuration used in a given experiment. Two tools are available to do so ([http://www-fusion.ciemat.es/cgi-bin/dir/dirnew.cgi?manuals/geometry_TJII/ See the on-line documentation] - only internal laboratory access): | In order to make comparisons between diagnostics, it is useful to convert these real-space co-ordinates to flux co-ordinates. This co-ordinate transform depends on the particular magnetic configuration used in a given experiment. Two tools are available to do so ([http://www-fusion.ciemat.es/cgi-bin/dir/dirnew.cgi?manuals/geometry_TJII/ See the on-line documentation] - only internal laboratory access): | ||