Sherwood 2015

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Simulation of edge plasma transport with the COGENT code

Author: Mikhail Dorf
Requested Type: Poster Only
Submitted: 2015-01-16 14:30:05

Co-authors: M. Dorr, J. Hittinger, T.D. Rognlien, R. H. Cohen, W. Lee, and S. Krasheninnikov

Contact Info:
Lawrence Livermore National Laboratory
7000 Eat Ave
Livermore, CA   94550

Abstract Text:
M. Dorf1, M. Dorr1, J. Hittinger1, T.D. Rognlien1, R. H. Cohen2, W. Lee3, and S. Krasheninnikov3
1Lawrence Livermore National Laboratory, Livermore, CA 94550
2CompX, Del Mar, CA 92014
3UC San Diego, La Jolla, CA 92093

We describe recent advances in cross-separatrix neoclassical transport simulations with COGENT, a continuum gyro-kinetic code being developed by the Edge Simulation Laboratory (ESL) collaboration. The COGENT code models the axisymmetric transport properties of edge plasmas including the effects of nonlinear (Fokker-Planck) collisions and a self-consistent electrostatic potential. Our recent work has focused on studies of ion orbit loss and the associated toroidal rotation driven by this mechanism. The results of COGENT simulations are discussed and analyzed for the parameters of the DIII-D experiment. In addition, we report on progress with development and implementation of new code capabilities including the models for anomalous radial transport and neutrals, and extension of COGENT to 5D (for turbulence simulations).
*Work performed for USDOE, at LLNL under contract DE-AC52-07NA27344.


March 16-18, 2015
The Courant Institute, New York University