Recent improvements in fast wave heating in NSTX

G. Taylor; R. E. Bell; R. W. Harvey; J. C. Hosea; E. F. Jaeger; B. P. LeBlanc; C. K. Phillips; P. M. Ryan; E. J. Valeo; J. B. Wilgen; J. R. Wilson

doi:10.1063/1.3273707

Recent improvements in fast wave heating in NSTX

G. Taylor, R. E. Bell, R. W. Harvey, J. C. Hosea, E. F. Jaeger, B. P. LeBlanc, C. K. Phillips, P. M. Ryan, E. J. Valeo, J. B. Wilgen, J. R. Wilson

PPPL NSTX

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Scopus citations

Abstract

Recent improvements in high-harmonic fast wave (HHFW) core heating in NSTX are attributed to using lithium conditioning, and other wall conditioning techniques, to move the onset density for perpendicular fast wave propagation further from the antenna. This has resulted in the first observation of HHFW core electron heating in deuterium plasma at a launched toroidal wavenumber, kφ=-3m^-1, NSTX record core electron temperatures of 5 keV in helium and deuterium discharges and, for the first time, significant HHFW core electron heating of deuterium neutral-beam-fuelled H-mode plasmas. Also, kφ=-8m^-1 heating of the plasma startup and plasma current ramp-up has resulted in significant core electron heating, even at central electron densities as low as ∼4×10¹⁸m^-3.

Original language	English (US)
Title of host publication	Radio Frequency Power in plasmas - Proceedings of the 18th Topical Conference
Pages	113-116
Number of pages	4
DOIs	https://doi.org/10.1063/1.3273707
State	Published - 2009
Event	18th Topical Conference on Radio Frequency Power in plasmas - Gent, Belgium Duration: Jun 24 2009 → Jun 26 2009

Publication series

Name	AIP Conference Proceedings
Volume	1187
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	18th Topical Conference on Radio Frequency Power in plasmas
Country/Territory	Belgium
City	Gent
Period	6/24/09 → 6/26/09

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Keywords

Electron energy and confinement time
RF heating
Spherical torus

Access to Document

10.1063/1.3273707

Cite this

Taylor, G., Bell, R. E., Harvey, R. W., Hosea, J. C., Jaeger, E. F., LeBlanc, B. P., Phillips, C. K., Ryan, P. M., Valeo, E. J., Wilgen, J. B., & Wilson, J. R. (2009). Recent improvements in fast wave heating in NSTX. In Radio Frequency Power in plasmas - Proceedings of the 18th Topical Conference (pp. 113-116). (AIP Conference Proceedings; Vol. 1187). https://doi.org/10.1063/1.3273707

@inproceedings{64f8e47680054c0d912a358fe52dcb25,

title = "Recent improvements in fast wave heating in NSTX",

abstract = "Recent improvements in high-harmonic fast wave (HHFW) core heating in NSTX are attributed to using lithium conditioning, and other wall conditioning techniques, to move the onset density for perpendicular fast wave propagation further from the antenna. This has resulted in the first observation of HHFW core electron heating in deuterium plasma at a launched toroidal wavenumber, kφ=-3m-1, NSTX record core electron temperatures of 5 keV in helium and deuterium discharges and, for the first time, significant HHFW core electron heating of deuterium neutral-beam-fuelled H-mode plasmas. Also, kφ=-8m-1 heating of the plasma startup and plasma current ramp-up has resulted in significant core electron heating, even at central electron densities as low as ∼4×1018m-3.",

keywords = "Electron energy and confinement time, RF heating, Spherical torus",

author = "G. Taylor and Bell, \{R. E.\} and Harvey, \{R. W.\} and Hosea, \{J. C.\} and Jaeger, \{E. F.\} and LeBlanc, \{B. P.\} and Phillips, \{C. K.\} and Ryan, \{P. M.\} and Valeo, \{E. J.\} and Wilgen, \{J. B.\} and Wilson, \{J. R.\}",

year = "2009",

doi = "10.1063/1.3273707",

language = "English (US)",

isbn = "9780735407534",

series = "AIP Conference Proceedings",

pages = "113--116",

booktitle = "Radio Frequency Power in plasmas - Proceedings of the 18th Topical Conference",

note = "18th Topical Conference on Radio Frequency Power in plasmas ; Conference date: 24-06-2009 Through 26-06-2009",

}

Taylor, G, Bell, RE, Harvey, RW, Hosea, JC, Jaeger, EF, LeBlanc, BP, Phillips, CK, Ryan, PM, Valeo, EJ, Wilgen, JB & Wilson, JR 2009, Recent improvements in fast wave heating in NSTX. in Radio Frequency Power in plasmas - Proceedings of the 18th Topical Conference. AIP Conference Proceedings, vol. 1187, pp. 113-116, 18th Topical Conference on Radio Frequency Power in plasmas, Gent, Belgium, 6/24/09. https://doi.org/10.1063/1.3273707

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T1 - Recent improvements in fast wave heating in NSTX

AU - Taylor, G.

AU - Bell, R. E.

AU - Harvey, R. W.

AU - Hosea, J. C.

AU - Jaeger, E. F.

AU - LeBlanc, B. P.

AU - Phillips, C. K.

AU - Ryan, P. M.

AU - Valeo, E. J.

AU - Wilgen, J. B.

AU - Wilson, J. R.

PY - 2009

Y1 - 2009

N2 - Recent improvements in high-harmonic fast wave (HHFW) core heating in NSTX are attributed to using lithium conditioning, and other wall conditioning techniques, to move the onset density for perpendicular fast wave propagation further from the antenna. This has resulted in the first observation of HHFW core electron heating in deuterium plasma at a launched toroidal wavenumber, kφ=-3m-1, NSTX record core electron temperatures of 5 keV in helium and deuterium discharges and, for the first time, significant HHFW core electron heating of deuterium neutral-beam-fuelled H-mode plasmas. Also, kφ=-8m-1 heating of the plasma startup and plasma current ramp-up has resulted in significant core electron heating, even at central electron densities as low as ∼4×1018m-3.

AB - Recent improvements in high-harmonic fast wave (HHFW) core heating in NSTX are attributed to using lithium conditioning, and other wall conditioning techniques, to move the onset density for perpendicular fast wave propagation further from the antenna. This has resulted in the first observation of HHFW core electron heating in deuterium plasma at a launched toroidal wavenumber, kφ=-3m-1, NSTX record core electron temperatures of 5 keV in helium and deuterium discharges and, for the first time, significant HHFW core electron heating of deuterium neutral-beam-fuelled H-mode plasmas. Also, kφ=-8m-1 heating of the plasma startup and plasma current ramp-up has resulted in significant core electron heating, even at central electron densities as low as ∼4×1018m-3.

KW - Electron energy and confinement time

KW - RF heating

KW - Spherical torus

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SN - 9780735407534

T3 - AIP Conference Proceedings

SP - 113

EP - 116

BT - Radio Frequency Power in plasmas - Proceedings of the 18th Topical Conference

T2 - 18th Topical Conference on Radio Frequency Power in plasmas

Y2 - 24 June 2009 through 26 June 2009

ER -

Recent improvements in fast wave heating in NSTX

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All Science Journal Classification (ASJC) codes

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