Experimental Setup on PSI-2

Abstract

The linear plasma generator PSI-2 is operated by the IEK-4 at the Forschungszentrum Jlich GmbH and originates from the upgraded PSI-1, located at the Humboldt University Berlin until 2010. The plasma environment in PSI-2 is utilized to investigate plasma wall interactions and imitate the first wall and especially divertor regions in a fusion reactor (Linsmeier, Unterberg, Coenen et al in Nucl Fusion 57:092012, 2017). Its steady state plasma operation capability is important for reaching exposure durations and thus fluence levels for relevant scientific insights into fuel retention studies (Reinhart, Kreter, Buzi et al in Nucl Mater 463:1021–1024, 2015) and erosion predictions (Kreter, Brandt, Huber et al in Fusion Sci Technol 68:8–14, 2015). Additionally, PSI-2 is thought to be a precursor experiment to a completely remote handled plasma generator JULE-PSI, which is placed in a hot cell to expose activated materials and samples (Unterberg, Jaspers, Koch et al in Fusion Eng Des 86:1797–1800, 2011).