Edge and SOL turbulence and blob variations over a large database in NSTX

S. J. Zweben; W. M. Davis; S. M. Kaye; J. R. Myra; R. E. Bell; B. P. Leblanc; R. J. Maqueda; T. Munsat; S. A. Sabbagh; Y. Sechrest; D. P. Stotler

doi:10.1088/0029-5515/55/9/093035

Edge and SOL turbulence and blob variations over a large database in NSTX

S. J. Zweben
, W. M. Davis
, S. M. Kaye
, J. R. Myra
, R. E. Bell
, B. P. Leblanc
, R. J. Maqueda
, T. Munsat
, S. A. Sabbagh
, Y. Sechrest
, D. P. Stotler

PPPL NSTX

Research output: Contribution to journal › Article › peer-review

62 Scopus citations

Abstract

This paper describes the range of variations in edge and SOL turbulence observed using a gas puff imaging (GPI) diagnostic in NSTX discharges. The database consists of 140 shots including Ohmic, L-mode, and H-mode plasmas measured during steady-state conditions (e.g. without ELMs). Turbulence quantities were evaluated using both cross-correlation analysis and blob tracking. Relative fluctuation levels varied from -1.0, correlation times were -40 μs, correlation lengths were -10 cm, and turbulence velocities were km s^-1 and km s^-1 outwards. These variations were evaluated with respect to both the global and local edge plasma parameters, and compared with simplified theoretical models.

Original language	English (US)
Article number	093035
Journal	Nuclear Fusion
Volume	55
Issue number	9
DOIs	https://doi.org/10.1088/0029-5515/55/9/093035
State	Published - Sep 3 2015

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

Keywords

edge
scrape-off-layer
tokamak
turbulence

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10.1088/0029-5515/55/9/093035

Cite this

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title = "Edge and SOL turbulence and blob variations over a large database in NSTX",

abstract = "This paper describes the range of variations in edge and SOL turbulence observed using a gas puff imaging (GPI) diagnostic in NSTX discharges. The database consists of 140 shots including Ohmic, L-mode, and H-mode plasmas measured during steady-state conditions (e.g. without ELMs). Turbulence quantities were evaluated using both cross-correlation analysis and blob tracking. Relative fluctuation levels varied from -1.0, correlation times were -40 μs, correlation lengths were -10 cm, and turbulence velocities were km s-1 and km s-1 outwards. These variations were evaluated with respect to both the global and local edge plasma parameters, and compared with simplified theoretical models.",

keywords = "edge, scrape-off-layer, tokamak, turbulence",

author = "Zweben, \{S. J.\} and Davis, \{W. M.\} and Kaye, \{S. M.\} and Myra, \{J. R.\} and Bell, \{R. E.\} and Leblanc, \{B. P.\} and Maqueda, \{R. J.\} and T. Munsat and Sabbagh, \{S. A.\} and Y. Sechrest and Stotler, \{D. P.\}",

note = "Publisher Copyright: {\textcopyright} 2015 IAEA, Vienna.",

year = "2015",

month = sep,

day = "3",

doi = "10.1088/0029-5515/55/9/093035",

language = "English (US)",

volume = "55",

journal = "Nuclear Fusion",

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TY - JOUR

T1 - Edge and SOL turbulence and blob variations over a large database in NSTX

AU - Zweben, S. J.

AU - Davis, W. M.

AU - Kaye, S. M.

AU - Myra, J. R.

AU - Bell, R. E.

AU - Leblanc, B. P.

AU - Maqueda, R. J.

AU - Munsat, T.

AU - Sabbagh, S. A.

AU - Sechrest, Y.

AU - Stotler, D. P.

PY - 2015/9/3

Y1 - 2015/9/3

N2 - This paper describes the range of variations in edge and SOL turbulence observed using a gas puff imaging (GPI) diagnostic in NSTX discharges. The database consists of 140 shots including Ohmic, L-mode, and H-mode plasmas measured during steady-state conditions (e.g. without ELMs). Turbulence quantities were evaluated using both cross-correlation analysis and blob tracking. Relative fluctuation levels varied from -1.0, correlation times were -40 μs, correlation lengths were -10 cm, and turbulence velocities were km s-1 and km s-1 outwards. These variations were evaluated with respect to both the global and local edge plasma parameters, and compared with simplified theoretical models.

AB - This paper describes the range of variations in edge and SOL turbulence observed using a gas puff imaging (GPI) diagnostic in NSTX discharges. The database consists of 140 shots including Ohmic, L-mode, and H-mode plasmas measured during steady-state conditions (e.g. without ELMs). Turbulence quantities were evaluated using both cross-correlation analysis and blob tracking. Relative fluctuation levels varied from -1.0, correlation times were -40 μs, correlation lengths were -10 cm, and turbulence velocities were km s-1 and km s-1 outwards. These variations were evaluated with respect to both the global and local edge plasma parameters, and compared with simplified theoretical models.

KW - edge

KW - scrape-off-layer

KW - tokamak

KW - turbulence

UR - https://www.scopus.com/pages/publications/84941703025

UR - https://www.scopus.com/pages/publications/84941703025#tab=citedBy

U2 - 10.1088/0029-5515/55/9/093035

DO - 10.1088/0029-5515/55/9/093035

M3 - Article

AN - SCOPUS:84941703025

SN - 0029-5515

VL - 55

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 9

M1 - 093035

ER -

Edge and SOL turbulence and blob variations over a large database in NSTX

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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