Abstract
A new approach to infer the momentum transport in tokamak core plasmas via perturbation experiments is presented. For the first time, the analysis self-consistently includes all momentum transport components and their time dependencies, which are essential to separate the momentum fluxes and closely match the experiment. The quantitative agreement between the experimentally inferred transport coefficients and the gyrokinetic predictions provides an unprecedented validation. This work shows that the new methodology and gyrokinetic predictions can now be utilized on the route to physics-based prediction of momentum transport in future reactor plasmas.
| Original language | English |
|---|---|
| Article number | 124003 |
| Number of pages | 7 |
| Journal | Nuclear Fusion |
| Volume | 63 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Dec 2023 |
| MoE publication type | A1 Journal article-refereed |
Funding
The authors would like to sincerely thank Dr Stoltzfus-Dueck for the fruitful discussions. This work has been carried out within the framework of the EUROfusion Consortium, partially funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No. 101052200—EUROfusion). The Swiss contribution to this work has been funded by the Swiss State Secretariat for Education, Research and Innovation (SERI). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union, the European Commission or SERI. Neither the European Union nor the European Commission nor SERI can be held responsible for them.
Keywords
- ASDEX Upgrade
- intrinsic torque
- momentum transport
- perturbation experiment
- plasma rotation
- residual stress
- tokamak
