Simulation and reflectivity measurements of the ITER first plasma beam dump material

When constructing a beam dump for fusion device, one faces several challenges and constrictions: It must be vacuum compatible, resistant to temperatures radiation, should neither gas out nor deteriorate, take up as less space possible obviously also absorb microwave radiation well. As candidates, the group of ceramic metal oxide layers have been suggested, from which three different material systems produced by atmospheric plasma spraying investigated: Titanium oxide, chromium an aluminum-titanium compound material. Both pure titanium don’t show absorption necessary, but Al 2 O 3 /TiO (60/40) is very promising will presented in following.