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TJ-II:Magnetics: Difference between revisions
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<ref>[http://www-fusion.ciemat.es/SW2005/conferences/madison99/Papers/Ascsibar.pdf E. Ascasíbar et al, ''Energy content and magnetic configuration scan in TJ-II plasmas'', 12<sup>th</sup> Int. Stell. Workshop (1999)]</ref> | <ref>[http://www-fusion.ciemat.es/SW2005/conferences/madison99/Papers/Ascsibar.pdf E. Ascasíbar et al, ''Energy content and magnetic configuration scan in TJ-II plasmas'', 12<sup>th</sup> Int. Stell. Workshop (1999)]</ref> | ||
<ref>[http://www.new.ans.org/pubs/journals/fst/a_1283 R. Jiménez-Gómez et al., ''Analysis of Magnetohydrodynamic Instabilities in TJ-II Plasmas'', Fusion Science and Technology '''51''', 20 (2007)]</ref> | <ref>[http://www.new.ans.org/pubs/journals/fst/a_1283 R. Jiménez-Gómez et al., ''Analysis of Magnetohydrodynamic Instabilities in TJ-II Plasmas'', Fusion Science and Technology '''51''', 20 (2007)]</ref> | ||
* Two straight arrays above the plasma column, each with 12 coils, mounted in a 0.5 mm thick stainless steel tube attached to a port flange. The 12 coils are distributed in 4 groups of 3 coils each, separated by a distance of 30 mm. The three coils in each group measure the three cylindrical components (''R'', ''Z'', and ''φ'') of the magnetic field. They are located in [[TJ-II:Sectors|sectors]] B5 and C4, at ''φ'' = 232° and 308°. | * Two straight arrays above the plasma column, each with 12 coils, mounted in a 0.5 mm thick stainless steel tube attached to a port flange. The 12 coils are distributed in 4 groups of 3 coils each, separated by a distance of 30 mm. The three coils in each group measure the three cylindrical components (''R'', ''Z'', and ''φ'') of the magnetic field. They are located in [[TJ-II:Sectors|sectors]] B5 and C4, at ''φ'' = 232° and 308°. The signals in the [[TJ-II:Shot database|TJ-II database]] corresponding to the B5 coils are called 'MIB5xy', where 'x' is 'R', 'F' (φ), or 'Z', and 'y' is the coil number. | ||
* One poloidal array with 15 coils measuring the poloidal field component. This array is located between [[TJ-II:Sectors|sectors]] D4 and D5, at ''φ'' = 45°. | * One poloidal array with 15 coils measuring the poloidal field component. This array is located between [[TJ-II:Sectors|sectors]] D4 and D5, at ''φ'' = 45°. The signals in the [[TJ-II:Shot database|TJ-II database]] corresponding to these coils are called 'MID5Px', where 'x' is the coil number. | ||
== Rogowski coils == | == Rogowski coils == | ||
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[[File:TJ-II_Diamagnetic_loop.jpg|200px|thumb|left|TJ-II diamagnetic loop]] | [[File:TJ-II_Diamagnetic_loop.jpg|200px|thumb|left|TJ-II diamagnetic loop]] | ||
Two internal diamagnetic loops are installed | Two internal diamagnetic loops are installed in [[TJ-II:Sectors|sector]] A5 (135°) and B4 (225°). | ||
They consist of a main loop which encircles the plasma column | They consist of a main loop which encircles the plasma column | ||
and runs under the protecting tiles in the groove region and a compensating loop which | and runs under the protecting tiles in the groove region and a compensating loop which | ||