Abstract
Effects of drifts have been studied on high Mach flows near the X-point associated with the divertor plasma detachment. Numerical calculations using a 2D edge plasma simulation code (the B2.5-EIRENE code) have been made for the JT-60U W-shaped divertor geometry. In this article, we mainly focus our attention to the effect of E × B drift. The cases with and without E × B drift in the partial detached state are compared. Due to the strong decrease of electron temperature near the separatrix and the resultant radial electric field, poloidal E × B drift flows are observed in the simulation. But the radial profiles of basic plasma parameters are not so much affected. In addition, simple model has been applied to discuss the numerical results. Although the drifts possibly act as a parallel momentum source/sink, the effect on the parallel flows is shown to be relatively small.
Original language | English |
---|---|
Pages (from-to) | 276-280 |
Number of pages | 5 |
Journal | Journal of Nuclear Materials |
Volume | 337-339 |
Issue number | 1-3 SPEC. ISS. |
DOIs | |
Publication status | Published - 2005 Mar 1 |
Keywords
- B2.5-Eirene code
- Detachment
- Drift effects
- JT-60U
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Materials Science(all)
- Nuclear Energy and Engineering