X-divertor study with SOLPS-ITER

We will study the X-divertor (XD) geometry, in comparison to the standard divertgor (SD), in JET and MAST-Upgrade using the latest SOLPS-ITER simulation code. According to our previous experience with DIII-D and NSTX-U we expect the XD to mitigate the exhaust power better than the SD in JET and MAST-U as well. We hope to show that the scrape-off-layer can detach at a lower upstream density in the XD cases, and can keep a localized detachment front near the target, away from the core plasma. We will examine the the physical mechanisms of the flaring effect in details.