Dust mobilization studies in the TDMX facility

The Toroidal Dust Mobilization eXperiment (TDMX) system is designed to experimentally simulate flow features and dust mobilization mechanisms in tokamak fusion reactor loss of vacuum accidents. A transparent toroidal chamber with several flow and aerosol mass diagnostics comprises the experiment system. Scoping tests have demonstrated the ability to generate conditions resulting in dust re-suspension and deposition in a toroidal geometry and explore effective methods of monitoring the distribution of re-deposited dust. This paper introduces TDMX by providing a description of the TDMX preliminary design, a summary of results from initial scoping tests, and a discussion of experiment improvements and future directions of the research.