Gyrokinetic particle simulation of neoclassical transport in the pedestal/scrape-off region of a tokamak plasma

Conference · Fri Sep 01 00:00:00 EDT 2006

OSTI ID:931867

Adams, Mark ^[1]; Chang, C. S. ^[2]; Cummings, J. ^[3]; Hinton, F. ^[4]; Keyes, David E. ^[1]; Klasky, Scott A.  ^[5]; Ku, S. ^[2]; Lee, Wei-Li ^[6]; Lin, Z. ^[7]; Parker, Scott ^[8]; CPES Team, the ^[9]

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1. Columbia University
2. New York University
3. California Institute of Technology (Caltech)/University of California, Davis
4. Hinton Associates
5. ORNL
6. Princeton Plasma Physics Laboratory (PPPL)
7. University of California, Irvine
8. University of Colorado, Boulder
9. SciDAC Prototype FSP Center for Plasma Edge Simulation

A gyrokinetic neoclassical solution for a diverted tokamak edge plasma has beenobtained for the first time using the massively parallel Jaguar XT3 computer at Oak Ridge NationalLaboratory. The solutions show similar characteristics to the experimental observations: electricpotential is positive in the scrape-off layer and negative in the H-mode layer, and the parallelrotation is positive in the scrape-off layer and at the inside boundary of the H-mode layer.However, the solution also makes a new physical discovery that there is a strong ExB convectiveflow in the scrape-off plasma. A general introduction to the edge simulation problem is alsopresented.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 931867
• Resource Relation: Conference: SciDAC 2006 - Denver, Tennessee, United States of America - 6/25/2006 12:00:00 AM-6/29/2006 12:00:00 AM
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
TOKAMAK DEVICES
PLASMA SCRAPE-OFF LAYER
NEOCLASSICAL TRANSPORT THEORY
H-MODE PLASMA CONFINEMENT
COMPUTERIZED SIMULATION
EDGE LOCALIZED MODES