Reconstruction of Detached Divertor Plasma Conditions in DIII-D Using Spectroscopic and Probe Data | |
Stangeby, P ; Fenstermacher, M | |
Lawrence Livermore National Laboratory | |
关键词: 70 Plasma Physics And Fusion Technology; Doublet-3 Device; Simulation; Thomson Scattering; Divertors; | |
DOI : 10.2172/15011804 RP-ID : UCRL-TR-208423 RP-ID : W-7405-ENG-48 RP-ID : 15011804 |
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美国|英语 | |
来源: UNT Digital Library | |
【 摘 要 】
For some divertor aspects, such as detached plasmas or the private flux zone, it is not clear that the controlling physics has been fully identified. This is a particular concern when the details of the plasma are likely to be important in modeling the problem--for example, modeling co-deposition in detached inner divertors. An empirical method of ''reconstructing'' the plasma based on direct experimental measurements may be useful in such situations. It is shown that a detached plasma in the outer divertor leg of DIII-D can be reconstructed reasonably well using spectroscopic and probe data as input to a simple onion-skin model and the Monte Carlo hydrogenic code, EIRENE. The calculated 2D distributions of n{sub e} and T{sub e} in the detached divertor were compared with direct measurements from the divertor Thomson scattering system, a diagnostic capability unique to DIII-D.
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