Shape dependence of sawtooth inversion radii and profile peaking factors in TCV L-mode plasmas
Sawtooth inversion radii and profile peaking factors of a large variety of ohmic and ECH heated L-mode plasmas, including elongations up to 2.6 and triangularities between -0.5 and 0. 75 have been investigated in the TCV tokamak. In ohmic plasmas, normalised inversion radii and electron temperature profile peaking factors (corrected for sawtoothing effects) depend solely on the parameter <j>/qojo, irrespectively of plasma shape. With ECH this parameter remains the main scaling parameter. Density profiles are well described as functions of the poloidal flux, in agreement with turbulent equi-partition theories. The paper provides parameter conversions allowing the observed scaling to be expressed using the conventional scaling variables q(95), d(95) arid k(95).
Bibliographic Reference: An article published in: Nuclear Fusion (2001), pp.14
Record Number: 200013790 / Last updated on: 2001-10-03
Original language: en
Available languages: en