Predicting the rotation profile in ITER
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 E x B 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. Here, 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.
- Authors:
-
- General Atomics, San Diego, CA (United States)
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- General Atomics, San Diego, CA (United States); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1593134
- Alternate Identifier(s):
- OSTI ID: 1595794; OSTI ID: 1648966
- Grant/Contract Number:
- FC02-04ER54698; AC02-09CH11466; AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Fusion
- Additional Journal Information:
- Journal Volume: 60; Journal Issue: 3; Journal ID: ISSN 0029-5515
- Publisher:
- IOP Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; plasma rotation; ITER; intrinsic rotation
Citation Formats
Chrystal, C., Grierson, B. A., Haskey, S. R., Sontag, A. C., Poli, F. M., Shafer, M. W., and deGrassie, J. S. Predicting the rotation profile in ITER. United States: N. p., 2020.
Web. doi:10.1088/1741-4326/ab6434.
Chrystal, C., Grierson, B. A., Haskey, S. R., Sontag, A. C., Poli, F. M., Shafer, M. W., & deGrassie, J. S. Predicting the rotation profile in ITER. United States. https://doi.org/10.1088/1741-4326/ab6434
Chrystal, C., Grierson, B. A., Haskey, S. R., Sontag, A. C., Poli, F. M., Shafer, M. W., and deGrassie, J. S. Tue .
"Predicting the rotation profile in ITER". United States. https://doi.org/10.1088/1741-4326/ab6434. https://www.osti.gov/servlets/purl/1593134.
@article{osti_1593134,
title = {Predicting the rotation profile in ITER},
author = {Chrystal, C. and Grierson, B. A. and Haskey, S. R. and Sontag, A. C. and Poli, F. M. and Shafer, M. W. and deGrassie, J. S.},
abstractNote = {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 E x B 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. Here, 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.},
doi = {10.1088/1741-4326/ab6434},
journal = {Nuclear Fusion},
number = 3,
volume = 60,
place = {United States},
year = {2020},
month = {1}
}
Web of Science
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