Abstract
The DEGAS Monte Carlo neutral transport code is applied to gas target divertor simulation experiments in the PISCEA-A linear plasma device to study the neutral gas dynamics in a well diagnosed environment. The experimental geometry is accurately represented by a novel use of the toroidal symmetry option. Axial and radial density and electron temperature profiles, experimentally determined from Langmuir probe data are used as plasma input data for the code. It is found that the molecular and atomic hydrogen density profiles obtained from DEGAS agree well with the experimentally determined neutral densities. The electron energy balance from DEGAS indicates electron power losses by ionization, radiation and dissociation in excess of 95% of the input power for the highest gas puffing rates ( S gas ≤ 3 Torr 1/s), in agreement with experimental observations.
Published Version
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