The Plasma Science and Innovation Center
PSI - Center
The PSI-Center will have three focused physics implementation groups:
the Boundary Conditions and Geometry Group; the Two-Fluid, MHD
Transport, and Relaxation Group; and the FLR and Kinetic Effects Group,
and a fourth Interfacing Group. The Center will also have a program
coordinator. We will begin with the structure as follows:
The Boundary Conditions and Geometry Group works on precise
geometry, real boundary conditions, atomic physics, neutrals, and
radiation. They work on the development of the MH4D code to
accurately model the complex geometry of many IC experiments.
The Two-Fluid, MHD Transport, and Relaxation Group works on
two-fluid/Hall, relaxation/reconnection, and MHD transport. They
develop capabilities for modeling 3D dynamics in plasmas that are
either collisional or in transition to low-collisionality behavior.
The planned tasks build upon the mature MHD algorithms and recent
Hall-MHD algorithms in the NIMROD code to produce self-consistent
two-fluid simulation models for the lower-temperature plasmas found in
The FLR and Kinetic Effects Group works on kinetic and FLR effects
and focus on adding the physics needed for modeling FRCs with 3D
codes. Before it can be used to simulate FRC experiments,
time-dependant boundary conditions will have to be implemented in
NIMROD. These boundary conditions will include a vacuum field solver
to accurately represent the external coils used in theta-pinch
formation and RMF current drive experiments.
The Interfacing Group works with the EC
experiments, and the three Physics Groups. They lead the PSI-Center's
interactions with the participating experimental groups. In
coordination with the collaborating experiments, the best applicable
code and equations to be solved will be selected. The proper boundary
conditions and geometry will be implemented to start the first runs.
Methods of data exchange and communication will also be integrated
during site visits. A Summer Study for EC experimenters will be
held each summer. Graphical, user-friendly code interfaces will be
developed, and continually refined for data presentation and analysis
packages. The Interfacing Group will perform EC experiment outreach
and information dissemination through the PSI-Center web site, and
presentations at outside meetings and workshops.
In addition to assisting all the groups with administrative
tasks, the program coordinator will make an inventory of all plasma
diagnostics within OFES. The Center will assist EC experimentalists in
locating and borrowing diagnostics for making measurements needed in
calibrating and/or testing the Center's codes.
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