Abstract
The Hybrid Illinois Device for Research and Applications (HIDRA) at the University of Illinois at Urbana-Champaign is a toroidal plasma device that enables fusion plasma-material interaction testing with both stellarator and tokamak plasmas. HIDRA’s long-pulse steady state stellarator plasmas provide a testbed for plasma facing component (PFC) plasma exposures. The HIDRA Material Analysis Test-stand (HIDRA-MAT) is a material characterization module attached to HIDRA that is being designed and fabricated to include thermal desorption spectroscopy and laser induced breakdown spectroscopy systems for in-vacuo PFC characterization. A specialized rotatable sample holder positions the sample for liquid metal droplet application from a liquid metal droplet injector on HIDRA-MAT. Early experiments look to investigate the effect liquid lithium has on porous tungsten samples’ retention of H, D, and He after plasma exposure. Preliminary results from a dual residual gas analyzer system show the ability to differentiate D2 and He in HIDRA-MAT. This work aims to advance the understanding of liquid metal PFCs and further the design and development of new fusion PFCs and technologies.
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Acknowledgements
This work is supported by the Department of Energy DESC0017719, by the University of Illinois Grainger College of Engineering, the Department of Nuclear, Plasma, and Radiological Engineering, the Office of the Vice Chancellor of Research, Facilities, Services at the University of Illinois at Urbana-Champaign and Institute for Plasma Physics.
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Shone, A., Koyn, Z., Rizkallah, R. et al. An Overview of the Hybrid Illinois Device for Research and Applications Material Analysis Test-stand (HIDRA-MAT). J Fusion Energ 39, 448–454 (2020). https://doi.org/10.1007/s10894-020-00260-7
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DOI: https://doi.org/10.1007/s10894-020-00260-7