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Title: 3D-DIVIMP(HC) code modeling of DIII-D DiMES porous plug injector experiments

Abstract

A Porous Plug Injector (PPI) system for the Divertor Material Evaluation System (DIMES) on DIII-D has been employed for in situ study of chemical erosion in the tokamak divertor environment. The 3D-DIVIMP(HC) code has been applied to the interpretation of the CI, CII and other spectroscopic measurements made at the PPI location, for (a) the synthetic source due to injection of CH4 through the PPI, and (b) the natural emission from the PPI head itself, which was inserted above surrounding graphite tiles by similar to 0.3 mm. The code successfully replicated the MDS (spectrometer)-measured absolute emissions of CH, CI, CII 427 nm, 514 nm, and 658 nm [1] and the DiMES TV-measured spatial shapes of the CH, CI, and CII 514 nm [1] emission ''clouds'' to within the combined uncertainties. It is thus concluded that the most important physics and chemistry of chemical sputtering have most likely been included in the model.

Authors:
 [1];  [2];  [2];  [3]
  1. University of Toronto Institute for Aerospace Studies
  2. Univ Toronto, Inst Aerosp Studies, Toronto, ON M3H 5T6, Canada
  3. Oak Ridge National Laboratory (ORNL)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1047646
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: 19th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices (PSI), San Diego, CA, USA, 20100524, 20100528
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CHEMISTRY; CLOUDS; DIVERTORS; DOUBLET-3 DEVICE; EVALUATION; GRAPHITE; PHYSICS; SIMULATION; SPUTTERING

Citation Formats

Mu, Y, Elder, J D, Stangeby, P C, and McLean, A G. 3D-DIVIMP(HC) code modeling of DIII-D DiMES porous plug injector experiments. United States: N. p., 2011. Web.
Mu, Y, Elder, J D, Stangeby, P C, & McLean, A G. 3D-DIVIMP(HC) code modeling of DIII-D DiMES porous plug injector experiments. United States.
Mu, Y, Elder, J D, Stangeby, P C, and McLean, A G. 2011. "3D-DIVIMP(HC) code modeling of DIII-D DiMES porous plug injector experiments". United States.
@article{osti_1047646,
title = {3D-DIVIMP(HC) code modeling of DIII-D DiMES porous plug injector experiments},
author = {Mu, Y and Elder, J D and Stangeby, P C and McLean, A G},
abstractNote = {A Porous Plug Injector (PPI) system for the Divertor Material Evaluation System (DIMES) on DIII-D has been employed for in situ study of chemical erosion in the tokamak divertor environment. The 3D-DIVIMP(HC) code has been applied to the interpretation of the CI, CII and other spectroscopic measurements made at the PPI location, for (a) the synthetic source due to injection of CH4 through the PPI, and (b) the natural emission from the PPI head itself, which was inserted above surrounding graphite tiles by similar to 0.3 mm. The code successfully replicated the MDS (spectrometer)-measured absolute emissions of CH, CI, CII 427 nm, 514 nm, and 658 nm [1] and the DiMES TV-measured spatial shapes of the CH, CI, and CII 514 nm [1] emission ''clouds'' to within the combined uncertainties. It is thus concluded that the most important physics and chemistry of chemical sputtering have most likely been included in the model.},
doi = {},
url = {https://www.osti.gov/biblio/1047646}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {1}
}

Conference:
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