| Zdroj: |
Tala, T, Söldner, F, Parail, V, Baranov, Y F, Taroni, A, Heikkinen, J, Karttunen, S & Pättikangas, T 1999, Modelling of LHCD profile control for high performance DT experiments on JET . in 13th Topical Conference on Applications of Radio Frequency Power in Plasmas . American Institute of Physics (AIP), AIP Conference Proceedings, no. 207, vol. 485, pp. 207-210, 13th Topical Conference on Applications of Radio Frequency Power in Plasmas, Annapolis, Maryland, United States, 12/04/99 . https://doi.org/10.1063/1.59732 |
| Popis: |
Transport calculations with relevant lower hybrid current drive control have been performed with the JETTO transport code. The heat transport model and various particle transport models reproducing the experimental JET data have been used in JETTO for predictive high performance modelling. Application of 3.5 MW LHCD power provides a slightly inverted or flat q-profile across 70% of the plasma radius whereas, without LHCD the q-profile is monotonic during the flat-top phase. The results predict a fusion power up to 30 MW for the high performance DT plasmas in the optimised shear scenario at Bt=3.4 T and Ip=3.9 MA. Large uncertainties, however, still persist in particular on the particle transport which strongly influences on the modelling calculations. The presence of not well understood MHD instabilities is also likely to reduce the performance. The most optimistic model, still consistent with experimental results, predicts a fusion gain approaching Q=1. |
