Title:
Implementation of the GTNEUT 2D Neutrals Transport Code for Routine DIII-D Analyses

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Stacey, Weston M.
Rognlien, Thomas D.
Groebner, Rich J.
Friis, Zachary Ward
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Abstract
The Georgia Tech Neutral Transport (GTNEUT) code is being implemented to provide a tool for routine analysis of the effects of neutral atoms on edge phenomena in DIII-D. GTNEUT can use an arbitrarily complex two-dimensional grid to represent the plasma edge geometry. The grid generation capability built into the UEDGE code, which utilizes equilibrium fitting data taken from experiment, is being adapted to produce geometric grids for the complex 2D geometries in the DIII-D plasma edge. The process for using experimental measurements supplemented by plasma edge calculations to provide the required background plasma parameters for the GTNEUT calculation will be systematized once the geometric grid generation is complete.
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2008
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Annual Report
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