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Impact of safety factor and magnetic shear profiles on edge turbulence in circular limited geometry
- Source :
- Contributions to Plasma Physics, Contributions to Plasma Physics, 2018, 58 (6-8), pp.497-504. ⟨10.1002/ctpp.201700174⟩, Contributions to Plasma Physics, Wiley-VCH Verlag, 2018, 58 (6-8), pp.497-504. ⟨10.1002/ctpp.201700174⟩
- Publication Year :
- 2018
- Publisher :
- Wiley, 2018.
-
Abstract
- International audience; The impact of magnetic configuration on edge turbulence properties in circular limiter geometry is investigated using TOKAM3X, a three-dimensional (3D), first-principle, fluid code for edge plasma. The theoretical spatial tilting of magnetic shear on turbulence fluctuations is recovered. Magnetic shear is found to generate or enhance poloidal high/low field sides (HFS/LFS) and up/down asymmetries. A simulation mimicking the impact of an X-point on circular limiter geometry leads to the formation of two transport barriers that are stable in time, thus leading to the improvement of core particle confinement and to reduction of radial turbulent transport. The magnetic shear, which also strongly enhances the E × B shear, is responsible for the barrier formation.
- Subjects :
- Tokamak
Safety factor
Materials science
Field (physics)
Turbulence
turbulence
edge
Geometry
Plasma
magnetic shear
Edge (geometry)
Condensed Matter Physics
01 natural sciences
010305 fluids & plasmas
law.invention
Physics::Fluid Dynamics
Shear (sheet metal)
law
0103 physical sciences
Limiter
[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
simulations
transport barrier
010306 general physics
tokamak
Subjects
Details
- ISSN :
- 08631042 and 15213986
- Volume :
- 58
- Database :
- OpenAIRE
- Journal :
- Contributions to Plasma Physics
- Accession number :
- edsair.doi.dedup.....e9ee384592a1f783d3dc3f32ceb79c30
- Full Text :
- https://doi.org/10.1002/ctpp.201700174