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Table of contents
1 Introduction
2 Boundary plasma concepts
2.1 Limiter and divertor configurations
2.1.1 Limiter Configuration
2.1.2 Divertor configuration
2.2 Sheath in the tokamak SOL
2.3 Divertor asymmetries
2.4 Drifts in the tokamak
2.4.1 Larmor motion
2.4.2 Drifts of the particles in the magneticeld
2.4.3 ExB drifts
2.4.4 rB drifts
3 Transport equations
3.1 Kinetic approach to the plasma description
3.2 Fluid approach to the plasma description. Moments of the distribution function
3.3 Momentum equations
3.4 Momentum equations closure
4 SOLPS-ITER code
4.1 Geometry
4.2 Continuity equation
4.3 Parallel momentum balance equation
4.4 Heat balance equation
4.5 Charge conservation equation
4.6 Boundary conditions
4.6.1 The core boundary
4.6.2 The tokamak wall boundary
4.6.3 The divertor targets boundary
5 Impurity transport and the Parallel momen-tum balance equation (PMBE) modication
5.1 Old form of the PMBE. Limiting assumptions
5.2 Braginskii form of the PMBE
5.3 Thermal and friction force terms for the Braginskii form of the PMBE
5.4 Eect of the thermal and friction force corrections in the Braginskii form of the PMBE
5.5 Derivation of the corrected thermal and friction force terms for the Braginskii form of the PMBE
5.5.1 Collision times
5.5.2 Final form of the friction and thermal force terms
5.5.3 The parallel current modification
5.6 Comparison of the old form of the PMBE with the Braginskii form with corrected terms
6 Modeling results
6.1 Modeling setup
6.2 Modeling results
7 Impurity transport 98
7.1 SOL velocity structure in the SOLPS-ITER modeling. Main ions reverse
7.2 Impurity ions velocity
7.3 Impurity retention and leakage
7.4 Radiative patterns of Ne and N in ASDEX Upgrade and ITER modeling
8 Conclusion
8.1 Improvement of the PMBE
8.2 Impurity retention and leakage mechanism
8.3 Nitrogen and Neon retention and leakage
8.4 Nitrogen and Neon radiation patterns in ASDEX Upgrade and ITER
SOLPS modeling
8.5 Outlook
