Simulation of double-null divertor plasmas with the UEDGE code

Rensink, M E; Allen, S L; Porter, G D; Rognlien, T D

doi:10.1002/1521-3986(200006)40:3/4<302::AID-CTPP302>3.0.CO;2-L

Simulation of double-null divertor plasmas with the UEDGE code

Conference · Tue Sep 21 04:00:00 EDT 1999

DOI:https://doi.org/10.1002/1521-3986(200006)40:3/4<302::AID-CTPP302>3.0.CO;2-L· OSTI ID:14951

Rensink, M E ^[1]; Allen, S L; Porter, G D; Rognlien, T D

LLNL

We describe recent modifications to the UEDGE code that enable us to simulate 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 because the magnetic connection length is shorter than for comparable single-null plasmas. Cross-field drifts due to radial electric fields produce strong poloidal ion particle fluxes at the midplane in the SOL that can drive up/down asymmetries.

Research Organization:: Lawrence Livermore National Lab., CA (US)

Sponsoring Organization:: USDOE Office of Energy Research (ER) (US)

DOE Contract Number:: W-7405-ENG-48

OSTI ID:: 14951

Report Number(s):: UCRL-JC-134341; AT5010200; AT5010200

Country of Publication:: United States

Language:: English

References (7)

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2-D Fluid Transport Simulations of Gaseous/Radiative Divertors Rognlien, T. D.; Brown, P. N.; Campbell, R. B. Contributions to Plasma Physics, Vol. 34, Issue 2-3 https://doi.org/10.1002/ctpp.2150340241	journal	January 1994
B2-EIRENE simulation of ASDEX and ASDEX-Upgrade scrape-off layer plasmas Schneider, R.; Reiter, D.; Zehrfeld, H. P. Journal of Nuclear Materials, Vol. 196-198 https://doi.org/10.1016/S0022-3115(06)80147-9	journal	December 1992
UEDGE and DEGAS modeling of the DIII-D scrape-off layer plasma Fenstermacher, M. E.; Porter, G. D.; Rensink, M. E. Journal of Nuclear Materials, Vol. 220-222 https://doi.org/10.1016/0022-3115(94)00494-3	journal	April 1995
Two-dimensional electric fields and drifts near the magnetic separatrix in divertor tokamaks Rognlien, T. D.; Ryutov, D. D.; Mattor, N. Physics of Plasmas, Vol. 6, Issue 5 https://doi.org/10.1063/1.873488	journal	May 1999
Influence of and ∇B drift terms in 2-D edge/SOL transport simulations Rognlien, T. D.; Porter, G. D.; Ryutov, D. D. Journal of Nuclear Materials, Vol. 266-269 https://doi.org/10.1016/S0022-3115(98)00835-6	journal	March 1999
Up-down symmetry in double null divertor experiments and magnetic field topology Marchand, R.; Dumberry, M.; Demers, Y. Nuclear Fusion, Vol. 35, Issue 3 https://doi.org/10.1088/0029-5515/35/3/I04	journal	March 1995

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Simulation of double-null divertor plasmas with the UEDGE code

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