NDLI: Control of divertor heat flux by radiative divertor operation in DIII-D

Content Provider	IEEE Xplore Digital Library
Author	Lasnier, C.J.
Copyright Year	1997
Description	Author affiliation: Lawrence Livermore Nat. Lab., CA, USA (Lasnier, C.J.)
Abstract	Summary form only given, as follows. The DIII-D tokamak divertor program is focused on obtaining the physics understanding of the divertor and scrape-off layer plasma required for leaning how to control divertor energy and particle flux in future large tokamaks such as ITER. We have made significant progress, reducing peak divertor heat flux by a factor of 5. This is done using deuterium or impurity gas puffing, which increases divertor density and radiative loss. Thomson scattering measurements in 2-D have shown that the electron temperature is reduced from more than 100 eV at the upstream separatrix to less the 1 eV near the divertor plate. We are now correlating this and simultaneous data from an extensive diagnostic set including fixed and fast-plunging Langmuir probes, VUV spectrometers, bolometers, visible-light TV cameras, and infrared cameras, with predictions from a 2D fluid code. In this low-temperature regime, atomic and molecular physics must now be added to improve our understanding. In addition, we are working toward independent control of core and divertor plasma.
File Size	101860
File Format	PDF
ISBN	0780339908
ISSN	07309244
DOI	10.1109/PLASMA.1997.604998
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-05-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Temperature control Tokamaks Physics Cameras Plasma density Deuterium Impurities Particle scattering Electrons Plasma temperature
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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Diagnostics for the DIII-D radiative divertor

Improved plasma operations in the DIII-D tokamak

Radiation distributions in detached divertor operation on DIII-D

Initial results from the multi-megawatt 110 GHz ECH system for the DIII-D tokamak

Particle control in the DIII-D advanced divertor

Dust observations in the DIII-D tokamak using a fast camera

Features and initial results of the DIII-D advanced tokamak radiative divertor

Radiative divertor plasmas with convection in DIII-D

LHD diagnostics towards steady state operation

Control of divertor heat flux by radiative divertor operation in DIII-D

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