Abstract
A self-consistent 2D model is presented for transport in boundary plasma and plasma-facing material walls. Plasma dynamics in the domain is represented by a 2D collisional plasma fluid model in the edge-plasma code UEDGE (Rognlien et al., J. Nucl. Mater. 196–198 (1992) 347), and transport of hydrogen and heat in the wall is represented by a system of reaction–diffusion equations in the 1D wall code FACE (Smirnov et al., Fusion Sci. Technol. 71 (2017) 75). To account for variation of parameters along the wall, in the coupled model multiple instances of the FACE code run in parallel. The coupled model provides a tool for investigating a range of dynamic plasma–material interactions phenomena in 2D. For demonstration of its capability, one application of particular interest is the role of active wall in tokamak strike point sweeping proposed for mitigation of divertor heat loads. In the present study, the coupled calculations are applied to investigation of the impact of heat and hydrogen transport in the material wall on the divertor plasma and target heat load during sweeping of the target strike point for parameters of a high-power tokamak.
| Original language | English |
|---|---|
| Article number | e202100156 |
| Journal | Contributions to Plasma Physics |
| Volume | 62 |
| Issue number | 5-6 |
| DOIs | |
| State | Published - Jun 1 2022 |
Funding
University of California, DOE DE‐SC0018302; Lawrence Livermore National Laboratory, DE‐AC52‐07NA27344; Advanced Scientific Computing Research, Fusion Energy Sciences, Office of Science, U.S. Department of Energy Funding information information University of California, DOE DE-SC0018302; Lawrence Livermore National Laboratory, DE-AC52-07NA27344; Advanced Scientific Computing Research, Fusion Energy Sciences, Office of Science, U.S. Department of EnergyThis work was performed under the auspices of the U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences and Office of Advanced Scientific Computing Research by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 and by University of California San Diego under Award No. DOE DE-SC0018302, through the Scientific Discovery through Advanced Computing (SciDAC) project on Plasma-Surface Interactions. This work was performed under the auspices of the U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences and Office of Advanced Scientific Computing Research by Lawrence Livermore National Laboratory under Contract DE‐AC52‐07NA27344 and by University of California San Diego under Award No. DOE DE‐SC0018302, through the Scientific Discovery through Advanced Computing (SciDAC) project on Plasma‐Surface Interactions.
| Funders | Funder number |
|---|---|
| U.S. Department of Energy | |
| University of California | DE-SC0018302 |
| Office of Science | |
| Advanced Scientific Computing Research | |
| Fusion Energy Sciences | |
| Lawrence Livermore National Laboratory | DE‐AC52‐07NA27344 |
| University of California, San Diego | DOE DE‐SC0018302 |
Keywords
- plasma divertor
- tokamak
