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Title: Gyrokinetic Calculations of Microturbulence and Transport for NSTX and Alcator-CMOD H-modes

Abstract

Recent H-mode experiments on NSTX [National Spherical Torus Experiment] and experiments on Alcator-CMOD, which also exhibit internal transport barriers (ITB), have been examined with gyrokinetic simulations with the GS2 and GYRO codes to identify the underlying key plasma parameters for control of plasma performance and, ultimately, the successful operation of future reactors such as ITER [International Thermonuclear Experimental Reactor]. On NSTX the H-mode is characterized by remarkably good ion confinement and electron temperature profiles highly resilient in time. On CMOD, an ITB with a very steep electron density profile develops following off-axis radio-frequency heating and establishment of H-mode. Both experiments exhibit ion thermal confinement at the neoclassical level. Electron confinement is also good in the CMOD core.

Authors:
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Publication Date:
Research Org.:
Princeton Plasma Physics Lab., NJ (US)
Sponsoring Org.:
USDOE Office of Science (SC) (US)
OSTI Identifier:
814699
Report Number(s):
PPPL-3834
TRN: US0304318
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 8 Jul 2003
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CONFINEMENT; ELECTRON DENSITY; ELECTRON TEMPERATURE; ELECTRONS; HEATING; PERFORMANCE; PLASMA; TRANSPORT; TOKAMAK; SPHERICAL TORUS; COMPUTER SIMULATION; TRANSPORT THEORY

Citation Formats

M.H. Redi, W. Dorland, R. Bell, P. Bonoli, C. Bourdelle, J. Candy, D. Ernst, C. Fiore, D. Gates, G. Hammett, K. Hill, S. Kaye, B. LeBlanc, J. Menard, D. Mikkelsen, G. Rewoldt, J. Rice, R. Waltz, and S. Wukitch. Gyrokinetic Calculations of Microturbulence and Transport for NSTX and Alcator-CMOD H-modes. United States: N. p., 2003. Web. doi:10.2172/814699.
M.H. Redi, W. Dorland, R. Bell, P. Bonoli, C. Bourdelle, J. Candy, D. Ernst, C. Fiore, D. Gates, G. Hammett, K. Hill, S. Kaye, B. LeBlanc, J. Menard, D. Mikkelsen, G. Rewoldt, J. Rice, R. Waltz, & S. Wukitch. Gyrokinetic Calculations of Microturbulence and Transport for NSTX and Alcator-CMOD H-modes. United States. doi:10.2172/814699.
M.H. Redi, W. Dorland, R. Bell, P. Bonoli, C. Bourdelle, J. Candy, D. Ernst, C. Fiore, D. Gates, G. Hammett, K. Hill, S. Kaye, B. LeBlanc, J. Menard, D. Mikkelsen, G. Rewoldt, J. Rice, R. Waltz, and S. Wukitch. Tue . "Gyrokinetic Calculations of Microturbulence and Transport for NSTX and Alcator-CMOD H-modes". United States. doi:10.2172/814699. https://www.osti.gov/servlets/purl/814699.
@article{osti_814699,
title = {Gyrokinetic Calculations of Microturbulence and Transport for NSTX and Alcator-CMOD H-modes},
author = {M.H. Redi and W. Dorland and R. Bell and P. Bonoli and C. Bourdelle and J. Candy and D. Ernst and C. Fiore and D. Gates and G. Hammett and K. Hill and S. Kaye and B. LeBlanc and J. Menard and D. Mikkelsen and G. Rewoldt and J. Rice and R. Waltz and S. Wukitch},
abstractNote = {Recent H-mode experiments on NSTX [National Spherical Torus Experiment] and experiments on Alcator-CMOD, which also exhibit internal transport barriers (ITB), have been examined with gyrokinetic simulations with the GS2 and GYRO codes to identify the underlying key plasma parameters for control of plasma performance and, ultimately, the successful operation of future reactors such as ITER [International Thermonuclear Experimental Reactor]. On NSTX the H-mode is characterized by remarkably good ion confinement and electron temperature profiles highly resilient in time. On CMOD, an ITB with a very steep electron density profile develops following off-axis radio-frequency heating and establishment of H-mode. Both experiments exhibit ion thermal confinement at the neoclassical level. Electron confinement is also good in the CMOD core.},
doi = {10.2172/814699},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 08 00:00:00 EDT 2003},
month = {Tue Jul 08 00:00:00 EDT 2003}
}

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