Multiple impurity seeding for power exhaust management in JT-60SA with carbon divertor

In this work the scenario 2 for the JT-60SA with a carbon divertor configuration is analysed by using the core-edge integrated COREDIV code. A combined seeding with two impurities, high and low atomic number, is proposed for controlling the core and the scrape-off layer radiation and limiting the total power delivered to the divertor plate. As a proof-of-principle tungsten and argon seeding is investigated due to successful results reported for the same scenario with W divertor. Replacing non-recycling W by recycling Xe shows the influence of the recycling coefficient on the final solution. Also the location of the puffing nozzle was found to be a crucial factor for the final result. (copyright EUROfusion Consortium, 2018)