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Localization of MHD modes and consistency with q-profiles in JET

De Angelis, R. (author)
Baruzzo, M. (author)
Buratti, P. (author)
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Alper, B. (author)
Barrera, L. (author)
Botrugno, A. (author)
Brix, M. (author)
Figini, L. (author)
Fonseca, A. (author)
Giroud, C. (author)
Hawkes, N. (author)
Howell, D. (author)
De la Luna, E. (author)
Orsitto, F. (author)
Pericoli, V. (author)
Rachlew, Elisabeth (author)
KTH,Atom- och molekylfysik
Tudisco, O. (author)
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 (creator_code:org_t)
Elsevier BV, 2010
2010
English.
In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. - : Elsevier BV. ; , s. 734-737
  • Conference paper (peer-reviewed)
Abstract Subject headings
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  • The measurement of the safety factor q in tokamaks, which describes the winding of the helical magnetic field lines, is very important especially for the achievement of advanced scenarios. The motional Stark effect diagnostic can provide a direct measurement of the magnetic field orientation but the derivation of the q-profiles requires a simulation of the magnetic equilibrium taking into account inputs from several other diagnostics. This analysis can be affected by large errors. In order to validate the results, q-profiles are compared with the radii of MHD modes, which can be attributed to surfaces of known q.

Keyword

Plasma physics
Tokamak
q-Profile

Publication and Content Type

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