Turbulent particle transport in Tore Supra
Steady state full non-inductive current Tore Supra plasmas offer an opportunity to study the local parametric dependence of particle pinch velocity, in order to discriminate among different theories. The existence of anomalous pinch is unambiguously demonstrated. The results support the turbulent theories based on Ion Temperature Gradient modes (ITG) and Trapped Electron Modes (TEM). In zero loop voltage plasmas, the density peaking is mainly determined by the profile of safety factor (q). An anomalous inward pinch generated by Vq/q is found to be dominant in the gradiant region (normalized radius 0.3 smaller as/equal to r/a smaller as/equal to 0.6). In contrast, the direction of the anomalous pinch in the plasma core (r/a smaller as/equal to 0.3) is more sensitive to the electron temperature (T(e)) profile.
Bibliographic Reference: An oral paper given at: 20th IAEA Fusion Energy Conference Organised by: International Atomic Energy Agency Held at: Centrtro de Fusao Nuclear, Vilamoura (PT)
Availability: Available from Association EURATOM-CEA, Departement de Recherches sur la Fusion Controlee, CEA Cadarache, F-13108 St Paul-Lez-Durance, France Tel: (+33) 4 42 25 70 01; Fax: (+33) 4 42 25 64 21 E-mail: email@example.com
Record Number: 200417808 / Last updated on: 2004-12-01
Original language: en
Available languages: en