Microturbulence in DIII-D tokamak pedestal. IV. Electrostatic turbulent transport
- Peking Univ., Beijing (China). Fusion Simulation Center, State Key Lab. of Nuclear Physics and Technology, School of Physics
- Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
- Xiamen Univ., Xiamen (China). Dept. of Physics, and Institute of Theoretical Physics and Astrophysics
Gyrokinetic simulations of electrostatic microturbulence in the edge plasmas of DIII-D shot 131997 find that the geodesic acoustic mode (GAM) is generated after nonlinear saturation both at the pedestal top and in the peak gradient region, and in turn, regulates the turbulence in both regions. Collisions significantly reduce the GAM amplitude and the associated GAM modulation of the turbulence in both regions. Collisions have little effects on the ion temperature gradient turbulent transport level at the pedestal top. Finally, on the other hand, collisional damping of the TEM significantly reduces the turbulent transport level in the peak gradient region.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Univ. of California, Irvine, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0010416; AC02-05CH11231; AC05-00OR22725
- OSTI ID:
- 1465367
- Alternate ID(s):
- OSTI ID: 1336488
- Journal Information:
- Physics of Plasmas, Vol. 23, Issue 12; ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 9 works
Citation information provided by
Web of Science
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