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Simulation of Double-Null Divertor Plasmas with the UEDGE Code

✍ Scribed by M.E. Rensink; S.L. Allen; G.D. Porter; T.D. Rognlien

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
109 KB
Volume
40
Category
Article
ISSN
0005-8025

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✦ Synopsis

We describe recent modifications to the UEDGE code for simulation of full double-null magnetic configurations. We present simulation results for magnetically balanced double nulls, with and without asymmetries due to divertor recycling and cross-field drifts. Up/down electron temperature asymmetries due to recycling are weak for attached plasmas. Crossfield drifts due to radial electric fields produce strong ion particle fluxes through the private flux regions that drive up/down plasma asymmetries. Electrical currents through grounded divertor plates are sensitive to both recycling-driven and drift-driven asymmetries.

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