Abstract
The theory, development, and validation of reduced quasilinear models of gyrokinetic turbulent transport in the closed flux surface core of tokamaks is reviewed. In combination with neoclassical collisional transport, these models are successful in accurately predicting core tokamak plasma temperature, density, rotation, and impurity profiles in a variety of confinement regimes. Refined experimental tests have been performed to validate the predictions of the quasilinear models, probing changes in the dominant gyrokinetic instabilities, as reflected in fluctuation measurements, cross-phases, and transport properties. These tests continue to produce a deeper understanding of the complex mix of instabilities at both electron and ion gyroradius scales.
| Original language | English |
|---|---|
| Article number | 103001 |
| Journal | Nuclear Fusion |
| Volume | 64 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 1 2024 |
Funding
The writing of this paper was supported by the U.S. Department of Energy under DE-AC05-00OR22725 and DE-FG02-95ER54309. This work has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200 \u2014 EUROfusion). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the European Commission can be held responsible for them.
Keywords
- gyrokinetic turbulence
- quasilinear theory
- tokamak transport