SAS divertor interpretation using SOLPS model construction and visualization tools in OMFIT*

Sensitivity of detachment to wall recycling coefficient in the DIII-D SAS divertor is studied using SOLPS. The OMFIT framework is used to rapidly construct families of SOLPS models with varying parameters, manage jobs, and visualize results. These improvements in setup and data visualization allow faster access to physics insights from SOLPS.

Groups of runs are created from instructions for scanning a particular setting, and key information from the SOLPS manual is presented alongside settings as they are changed. The settings for existing runs can also be read back to clarify how runs differ and to track progress.

OMFIT parses SOLPS files so they can be read and modified by python scripts before deploying jobs. Extracting results into arrays allows easier comparisons between SOLPS runs and to other data, greater ability to customize plots, and the ability to interface with other OMFIT modules. In particular, SOLPS is interfaced to the SCOPE module’s database creator to provide visualizations of parameter spaces mapped by families of related SOLPS models. These new tools in OMFIT are used to support a study of sensitivity of detachment to recycling coefficient in the DIII-D SAS divertor.