DIII-D RESEARCH OPPORTUNITIES FORUM FOR THE 2013 EXPERIMENTAL CAMPAIGN Review | Direct submission with log-in | Request submission without log-in
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Title	207: Dust generation from deposited layers and leading edges
Name:	Dmitry Rudakov rudakov@fusion.gat.com	Affiliation:	University of California, San Diego
Research Area:	Plasma-material Interface	Presentation time:	Not requested
Co-Author(s):	C. Wong, R. Moyer, N. Brooks, M. Fenstermacher, S. Krasheninnikov, C. Lasnier, R. Smirnov	ITPA Joint Experiment :	No
Description:	Characterize dust generation from DiMES samples with pre-deposited hydrocarbon films and specially machined leading edges.	ITER IO Urgent Research Task :	No
Experimental Approach/Plan:	DiMES samples with pre-deposited hydrocarbon films and specially machined leading edges will be exposed to known particle/heat fluxes at the strike point in LSN configuration. Dust generation will be characterized by available diagnostics (visible cameras, IR TV, MDS) and postmortem analysis of the samples.
Background:	Dust production and accumulation present potential safety and operational issues for ITER by contributing to tritium inventory rise and leading to radiological and explosion hazards. In addition, dust penetration of the core plasma can cause undesirably high impurity concentration and degrade performance. Projections of dust production rates based on experience from existing devices are needed. ITER physics work programme for 2009-2011 called for exposure of tokamak generated deposits (carbon in the short term) to ITER relevant transient heat loads and analysis of generated dust.
Resource Requirements:	Two experiments, one with pre-deposited layers, one with a leading edge. 1-2 setup shots and 2-3 exposure shots requested for each experiment. LSN patch panel, OSP sweep on DiMES.
Diagnostic Requirements:	DiMES, UCSD fast camera coupled to a view of DiMES, lower divertor tangential TVs, CER, Thomson (divertor and core), filterscopes, MDS, lower divertor Langmuir probes, SPRED, IR TV.
Analysis Requirements:
Other Requirements: