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Title: Observation of a High Performance Operating Regime with Small Edge-Localized Modes in the National Spherical Torus Experiment

Abstract

We report observation of a high performance scenario in the National Spherical Torus Experiment with very small edge-localized modes (ELMs). These ELMs have no measurable impact on stored energy and are consistent with high bootstrap current operation with line average density approaching Greenwald scaling. The ELM perturbation is observed to typically originate near the lower divertor region, as opposed to the outer midplane for ELMs described in the literature. If extrapolable, this scenario would provide an attractive operating regime for next step fusion experiments

Authors:
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Publication Date:
Research Org.:
Princeton Plasma Physics Lab., Princeton, NJ (US)
Sponsoring Org.:
USDOE Office of Science (SC) (US)
OSTI Identifier:
827941
Report Number(s):
PPPL-3954
TRN: US0403749
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 13 May 2004
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BOOTSTRAP CURRENT; DIVERTORS; PERFORMANCE; STORED ENERGY; EDGE PLASMA; SPHERICAL TORUS; X-RAYS, SOFT

Citation Formats

Maingi, R, Tritz, K, Fredrickson, E D, Menard, J E, Sabbagh, S A, Stutman, D, Bell, M G, Bell, R E, Bush, C E, Gates, D A, Johnson, D W, Kaita, R, Kaye, S M, Kugel, H W, LeBlanc, B P, Mueller, D, Raman, R, Roquemore, A L, and Soukhanovskii, V A. Observation of a High Performance Operating Regime with Small Edge-Localized Modes in the National Spherical Torus Experiment. United States: N. p., 2004. Web. doi:10.2172/827941.
Maingi, R, Tritz, K, Fredrickson, E D, Menard, J E, Sabbagh, S A, Stutman, D, Bell, M G, Bell, R E, Bush, C E, Gates, D A, Johnson, D W, Kaita, R, Kaye, S M, Kugel, H W, LeBlanc, B P, Mueller, D, Raman, R, Roquemore, A L, & Soukhanovskii, V A. Observation of a High Performance Operating Regime with Small Edge-Localized Modes in the National Spherical Torus Experiment. United States. doi:10.2172/827941.
Maingi, R, Tritz, K, Fredrickson, E D, Menard, J E, Sabbagh, S A, Stutman, D, Bell, M G, Bell, R E, Bush, C E, Gates, D A, Johnson, D W, Kaita, R, Kaye, S M, Kugel, H W, LeBlanc, B P, Mueller, D, Raman, R, Roquemore, A L, and Soukhanovskii, V A. Thu . "Observation of a High Performance Operating Regime with Small Edge-Localized Modes in the National Spherical Torus Experiment". United States. doi:10.2172/827941. https://www.osti.gov/servlets/purl/827941.
@article{osti_827941,
title = {Observation of a High Performance Operating Regime with Small Edge-Localized Modes in the National Spherical Torus Experiment},
author = {Maingi, R and Tritz, K and Fredrickson, E D and Menard, J E and Sabbagh, S A and Stutman, D and Bell, M G and Bell, R E and Bush, C E and Gates, D A and Johnson, D W and Kaita, R and Kaye, S M and Kugel, H W and LeBlanc, B P and Mueller, D and Raman, R and Roquemore, A L and Soukhanovskii, V A},
abstractNote = {We report observation of a high performance scenario in the National Spherical Torus Experiment with very small edge-localized modes (ELMs). These ELMs have no measurable impact on stored energy and are consistent with high bootstrap current operation with line average density approaching Greenwald scaling. The ELM perturbation is observed to typically originate near the lower divertor region, as opposed to the outer midplane for ELMs described in the literature. If extrapolable, this scenario would provide an attractive operating regime for next step fusion experiments},
doi = {10.2172/827941},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {5}
}