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Title: Kinetic Profiles in NSTX Plasmas

Abstract

The National Spherical Torus Experiment (NSTX) is a low aspect ratio (R/a approximately 1.3) device with auxiliary heating from neutral-beam injection (NBI) and high-harmonic fast-wave heating (HHFW). Typical NSTX parameters are R(subscript ''0'') = 85 cm, a = 67 cm, I(subscript ''p'') = 0.7-1.4 MA, B(subscript ''phi'') = 0.25-0.45 T. Three co-directed deuterium neutral-beam sources have injected P(subscript ''NB'') less than or equal to 4.7 MW. HHFW plasmas typically have delivered P(subscript ''RF'') less than or equal to 3 MW. Important to the understanding of NSTX confinement are the new kinetic profile diagnostics: a multi-pulse Thomson scattering system (MPTS) and a charge-exchange recombination spectroscopy (CHERS) system. The MPTS diagnostic currently measures electron density and temperature profiles at 30 Hz at ten spatial locations. The CHERS system has recently become available to measure carbon ion temperature and toroidal flow at 17 radial positions spanning the outer half of the minor radius with 20 msec time resolution during NBI. Experiments conducted during the last year have produced a wide range of kinetic profiles in NSTX. Some interesting examples are presented below.

Authors:
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Publication Date:
Research Org.:
Princeton Plasma Physics Lab., NJ (US)
Sponsoring Org.:
USDOE Office of Science (US)
OSTI Identifier:
787778
Report Number(s):
PPPL-3591
TRN: US0110610
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 10 Jul 2001
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; NSTX DEVICE; ASPECT RATIO; AUXILIARY HEATING; CARBON IONS; CHARGE EXCHANGE; DEUTERIUM; ELECTRON DENSITY; RECOMBINATION; SPECTROSCOPY; THOMSON SCATTERING; TIME RESOLUTION; DIAGNOSTIC TECHNIQUES; TEMPERATURE DISTRIBUTION

Citation Formats

R.E. Bell, B.P. LeBlanc, C. Bourdelle, D.R. Ernst, E.D. Fredrickson, D.A. Gates, J.C. Hosea, D.W. Johnson, S.M. Kaye, R. Maingi, S. Medley, J.E. Menard, D. Mueller, M. Ono, F. Paoletti, M. Peng, S.A. Sabbagh, D. Stutman, D.W. Swain, E.J. Synakowski, and and J.R. Wilson. Kinetic Profiles in NSTX Plasmas. United States: N. p., 2001. Web. doi:10.2172/787778.
R.E. Bell, B.P. LeBlanc, C. Bourdelle, D.R. Ernst, E.D. Fredrickson, D.A. Gates, J.C. Hosea, D.W. Johnson, S.M. Kaye, R. Maingi, S. Medley, J.E. Menard, D. Mueller, M. Ono, F. Paoletti, M. Peng, S.A. Sabbagh, D. Stutman, D.W. Swain, E.J. Synakowski, & and J.R. Wilson. Kinetic Profiles in NSTX Plasmas. United States. doi:10.2172/787778.
R.E. Bell, B.P. LeBlanc, C. Bourdelle, D.R. Ernst, E.D. Fredrickson, D.A. Gates, J.C. Hosea, D.W. Johnson, S.M. Kaye, R. Maingi, S. Medley, J.E. Menard, D. Mueller, M. Ono, F. Paoletti, M. Peng, S.A. Sabbagh, D. Stutman, D.W. Swain, E.J. Synakowski, and and J.R. Wilson. Tue . "Kinetic Profiles in NSTX Plasmas". United States. doi:10.2172/787778. https://www.osti.gov/servlets/purl/787778.
@article{osti_787778,
title = {Kinetic Profiles in NSTX Plasmas},
author = {R.E. Bell and B.P. LeBlanc and C. Bourdelle and D.R. Ernst and E.D. Fredrickson and D.A. Gates and J.C. Hosea and D.W. Johnson and S.M. Kaye and R. Maingi and S. Medley and J.E. Menard and D. Mueller and M. Ono and F. Paoletti and M. Peng and S.A. Sabbagh and D. Stutman and D.W. Swain and E.J. Synakowski and and J.R. Wilson},
abstractNote = {The National Spherical Torus Experiment (NSTX) is a low aspect ratio (R/a approximately 1.3) device with auxiliary heating from neutral-beam injection (NBI) and high-harmonic fast-wave heating (HHFW). Typical NSTX parameters are R(subscript ''0'') = 85 cm, a = 67 cm, I(subscript ''p'') = 0.7-1.4 MA, B(subscript ''phi'') = 0.25-0.45 T. Three co-directed deuterium neutral-beam sources have injected P(subscript ''NB'') less than or equal to 4.7 MW. HHFW plasmas typically have delivered P(subscript ''RF'') less than or equal to 3 MW. Important to the understanding of NSTX confinement are the new kinetic profile diagnostics: a multi-pulse Thomson scattering system (MPTS) and a charge-exchange recombination spectroscopy (CHERS) system. The MPTS diagnostic currently measures electron density and temperature profiles at 30 Hz at ten spatial locations. The CHERS system has recently become available to measure carbon ion temperature and toroidal flow at 17 radial positions spanning the outer half of the minor radius with 20 msec time resolution during NBI. Experiments conducted during the last year have produced a wide range of kinetic profiles in NSTX. Some interesting examples are presented below.},
doi = {10.2172/787778},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 10 00:00:00 EDT 2001},
month = {Tue Jul 10 00:00:00 EDT 2001}
}

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