Plasma Wall Interaction - Challenges for a Future Fusion Reactor
Speaker: Dr. Jan Coenen
Series: Other Events
Location: J223 Equad
Date/Time: Tuesday, April 1, 2014, 2:30 p.m. - 3:30 p.m.
With each step closer to realizing a fusion power plant the importance of Plasma Wall Inter-action has become more evident. Controlling the particle and power flux toward the 1st wall and the divertor of a fusion reactor is paramount for the reactor lifetime and the viability of fusion energy.
High Heat flux materials such as W are the main candidates for application in a future reac-tor, while materials such as steels and liquid metals are still in the exploratory phase. For ITER as the next step device issues of transient power loads, material erosion but also re-tention are still under study for the chosen material mix of Beryllium and Tungsten.
Here the issue of W erosion, transient heat loads as well W-melting and its impact on plasma performance shall be discussed. A brief overview will be given on the issues related to the JET-C to JET -ILW changeover as an example to a full metal transition. In addition alternative approaches to plasma facing materials such as liquid metals and composite ma-terials are described.
Between the years 2000 and 2005 I studied physics, with a focus on experimental particle physics, at the RWTH Aachen. I performed my thesis work at the Fermilab in Chicago. After finalizing my graduate studies in 2005 I shifted topics, due to my rekindled interest in nuclear fusion.