(EXP4/20) Recent Developments in Tokamak Edge Physics at Garching
D. P. Coster1), X. Bonnin2),
K. Borrass1), H.-S. Bosch1),
B. Braams3), H. Buerbaumer4),
A. Kallenbach1), M. Kaufmann1),
J.-W. Kim1), E. Kovaltsova5),
E. Mazzoli6), J. Neuhauser1),
D. Reiter7), V. Rozhansky5),
R. Schneider2), W. Ullrich1),
S. Voskoboynikov5), P. Xantopoulos8)
and the ASDEX Upgrade Team1)
1) Max-Planck-Institut für Plasmaphysik,
EURATOM Association, 85748 Garching, Germany
2) Max-Planck-Institut für Plasmaphysik, EURATOM Association,
17489 Greifswald, Germany
3) Courant Institute, NYU, New York, USA
4) Institut für Allgemeine Physik, TU Wien, Austria, Association
EURATOM-OEAW
5) St. Petersburg State Technical University, St. Petersburg, Russia
6) Politecnico di Torino, Italy
7) Düsseldorf University, Düsseldorf, Germany
8) N.C.S.R. `Demokritos', GR-15310 A.G. Paraskevi, Greece
Abstract. The use of the SOLPS edge plasma and neutral codes is
discussed. First SOLPS4.0 B2-Eirene is used to understand the role of C
radiation in lowering the divertor target power load and the effects of
power, density and divertor geometry on helium compression and enrichment.
Then the newer B2-SOLPS5.0 is used in an interpretive mode to derive edge
transport coefficients from experimental data, and then, with drift effects
included, to model scrape-off layer currents. Finally some analytic and
semi-analytic results are mentioned. The understanding of divertor power
loading, helium compression and enrichment, edge transport coefficients and
drifts are all important for current machines, but vital for extrapolation
to future machines.
IAEA 2001
