Abstract
Determining the toroidal rotation for future tokamaks like ITER is a challenging and important problem. By combining empirical scalings for the intrinsic rotation at the top of the pedestal with the expected neutral beam torque and modeling of momentum transport, the toroidal rotation profile for ITER is predicted with TGYRO using TGLF (SAT0 and SAT1). On axis rotation exceeds 20 krad s-1 and the shear is significant enough to reduce turbulent transport and significantly increase confinement and fusion power when comparing to cases that ignore the effect of rotation. The prediction of the rotation at the top of the pedestal is made with increased confidence due to experiments and modeling in DIII-D that have determined the importance of fast-ion and neutral particle transport effects on intrinsic rotation at this location. In particular, the effect of neutral particles on momentum transport in the pedestal region is found to be insignificant.
| Original language | English |
|---|---|
| Article number | 036003 |
| Journal | Nuclear Fusion |
| Volume | 60 |
| Issue number | 3 |
| DOIs | |
| State | Published - 2020 |
Funding
This material is based on the work supported by the U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using the DIII-D National Fusion Facility, a DOE Office of Science user facility, under Award Nos. DE-FC02-04ER54698, DE-AC02-09CH11466, and DE-AC05-00OR22725
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | |
| Office of Science | DE-AC05-00OR22725, DE-AC02-09CH11466, DE-FC02-04ER54698 |
| Fusion Energy Sciences |
Keywords
- ITER
- Intrinsic rotation
- Plasma rotation
