Journal
NUCLEAR FUSION
Volume 60, Issue 4, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1741-4326/ab71bc
Keywords
X-divertor; detachment; non-coronal effects
Categories
Funding
- U.S. DOE [DE-FG02-04ER54742, DE-SC0019102, DE-SC0012956]
- U.S. Department of Energy (DOE) [DE-SC0012956, DE-SC0019102] Funding Source: U.S. Department of Energy (DOE)
Ask authors/readers for more resources
Through SOLPS-ITER simulations on DIII-D, we have demonstrated X-divertor (XD)'s abilities to boost carbon line radiation and hence to achieve similar detached conditions with just half the upstream density of the standard divertor (SD). Simulations suggest that the XD geometry vastly expands the carbon radiation volume near the target through the non-coronal effects that increase the carbon emissivity by an order of magnitude within T-e = 20 similar to 30 eV range. The underlying mechanisms include the parallel and perpendicular transport of carbon impurities and the charge exchange with deuterium neutrals. Simplified physics models supported by simulation data indicate that the ultra shallow field angle in the XD plays a critical role in these mechanisms.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available