Far scrape-off layer and near wall plasma studies in DIII-D

D. L. Rudakov; J. A. Boedo; R. A. Moyer; N. H. Brooks; R. P. Doerner; T. E. Evans; M. E. Fenstermacher; M. Groth; E. M. Hollmann; S. Krasheninnikov; C. J. Lasnier; M. A. Mahdavi; G. R. McKee; A. McLean; P. C. Stangeby; W. R. Wampler; J. G. Watkins; W. P. West; D. G. Whyte; C. P C Wong

doi:10.1016/j.jnucmat.2004.10.094

Far scrape-off layer and near wall plasma studies in DIII-D

D. L. Rudakov^*, J. A. Boedo, R. A. Moyer, N. H. Brooks, R. P. Doerner, T. E. Evans, M. E. Fenstermacher, M. Groth, E. M. Hollmann, S. Krasheninnikov, C. J. Lasnier, M. A. Mahdavi, G. R. McKee, A. McLean, P. C. Stangeby, W. R. Wampler, J. G. Watkins, W. P. West, D. G. Whyte, C. P C Wong

^*Corresponding author for this work

Not published at Aalto University

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

16 Citations (Scopus)

Abstract

Far scrape-off layer (SOL) plasma parameters in DIII-D depend strongly on the discharge density and confinement regime. In L-mode, cross-field transport increases with the average discharge density and elevates the far SOL density, thus increasing plasma-wall contact. Far SOL density near the low field side (LFS) of the main chamber wall also increases with decreasing plasma current and with decreasing outer wall gap. In H-mode, between edge localized modes (ELMs), plasma-wall contact is weaker than in L-mode. During ELMs plasma fluxes to the LFS wall increase to, or above the L-mode levels. A large fraction of the net cross-field fluxes is convected through the SOL by large amplitude intermittent transport events. In high-density L-mode and during ELMs in H-mode, intermittent events propagate all the way to the LFS wall and may cause sputtering.

Original language	English
Pages (from-to)	717-721
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	337-339
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2004.10.094
Publication status	Published - 1 Mar 2005
MoE publication type	A1 Journal article-refereed

Keywords

Cross-field transport
DIII-D
Edge plasma
Intermittent transport
Probes

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10.1016/j.jnucmat.2004.10.094

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Rudakov, D. L., Boedo, J. A., Moyer, R. A., Brooks, N. H., Doerner, R. P., Evans, T. E., Fenstermacher, M. E., Groth, M., Hollmann, E. M., Krasheninnikov, S., Lasnier, C. J., Mahdavi, M. A., McKee, G. R., McLean, A., Stangeby, P. C., Wampler, W. R., Watkins, J. G., West, W. P., Whyte, D. G., & Wong, C. P. C. (2005). Far scrape-off layer and near wall plasma studies in DIII-D. Journal of Nuclear Materials, 337-339(1-3), 717-721. https://doi.org/10.1016/j.jnucmat.2004.10.094

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title = "Far scrape-off layer and near wall plasma studies in DIII-D",

abstract = "Far scrape-off layer (SOL) plasma parameters in DIII-D depend strongly on the discharge density and confinement regime. In L-mode, cross-field transport increases with the average discharge density and elevates the far SOL density, thus increasing plasma-wall contact. Far SOL density near the low field side (LFS) of the main chamber wall also increases with decreasing plasma current and with decreasing outer wall gap. In H-mode, between edge localized modes (ELMs), plasma-wall contact is weaker than in L-mode. During ELMs plasma fluxes to the LFS wall increase to, or above the L-mode levels. A large fraction of the net cross-field fluxes is convected through the SOL by large amplitude intermittent transport events. In high-density L-mode and during ELMs in H-mode, intermittent events propagate all the way to the LFS wall and may cause sputtering.",

keywords = "Cross-field transport, DIII-D, Edge plasma, Intermittent transport, Probes",

author = "Rudakov, {D. L.} and Boedo, {J. A.} and Moyer, {R. A.} and Brooks, {N. H.} and Doerner, {R. P.} and Evans, {T. E.} and Fenstermacher, {M. E.} and M. Groth and Hollmann, {E. M.} and S. Krasheninnikov and Lasnier, {C. J.} and Mahdavi, {M. A.} and McKee, {G. R.} and A. McLean and Stangeby, {P. C.} and Wampler, {W. R.} and Watkins, {J. G.} and West, {W. P.} and Whyte, {D. G.} and Wong, {C. P C}",

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doi = "10.1016/j.jnucmat.2004.10.094",

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Rudakov, DL, Boedo, JA, Moyer, RA, Brooks, NH, Doerner, RP, Evans, TE, Fenstermacher, ME, Groth, M, Hollmann, EM, Krasheninnikov, S, Lasnier, CJ, Mahdavi, MA, McKee, GR, McLean, A, Stangeby, PC, Wampler, WR, Watkins, JG, West, WP, Whyte, DG & Wong, CPC 2005, 'Far scrape-off layer and near wall plasma studies in DIII-D', Journal of Nuclear Materials, vol. 337-339, no. 1-3, pp. 717-721. https://doi.org/10.1016/j.jnucmat.2004.10.094

TY - JOUR

T1 - Far scrape-off layer and near wall plasma studies in DIII-D

AU - Rudakov, D. L.

AU - Boedo, J. A.

AU - Moyer, R. A.

AU - Brooks, N. H.

AU - Doerner, R. P.

AU - Evans, T. E.

AU - Fenstermacher, M. E.

AU - Groth, M.

AU - Hollmann, E. M.

AU - Krasheninnikov, S.

AU - Lasnier, C. J.

AU - Mahdavi, M. A.

AU - McKee, G. R.

AU - McLean, A.

AU - Stangeby, P. C.

AU - Wampler, W. R.

AU - Watkins, J. G.

AU - West, W. P.

AU - Whyte, D. G.

AU - Wong, C. P C

PY - 2005/3/1

Y1 - 2005/3/1

N2 - Far scrape-off layer (SOL) plasma parameters in DIII-D depend strongly on the discharge density and confinement regime. In L-mode, cross-field transport increases with the average discharge density and elevates the far SOL density, thus increasing plasma-wall contact. Far SOL density near the low field side (LFS) of the main chamber wall also increases with decreasing plasma current and with decreasing outer wall gap. In H-mode, between edge localized modes (ELMs), plasma-wall contact is weaker than in L-mode. During ELMs plasma fluxes to the LFS wall increase to, or above the L-mode levels. A large fraction of the net cross-field fluxes is convected through the SOL by large amplitude intermittent transport events. In high-density L-mode and during ELMs in H-mode, intermittent events propagate all the way to the LFS wall and may cause sputtering.

AB - Far scrape-off layer (SOL) plasma parameters in DIII-D depend strongly on the discharge density and confinement regime. In L-mode, cross-field transport increases with the average discharge density and elevates the far SOL density, thus increasing plasma-wall contact. Far SOL density near the low field side (LFS) of the main chamber wall also increases with decreasing plasma current and with decreasing outer wall gap. In H-mode, between edge localized modes (ELMs), plasma-wall contact is weaker than in L-mode. During ELMs plasma fluxes to the LFS wall increase to, or above the L-mode levels. A large fraction of the net cross-field fluxes is convected through the SOL by large amplitude intermittent transport events. In high-density L-mode and during ELMs in H-mode, intermittent events propagate all the way to the LFS wall and may cause sputtering.

KW - Cross-field transport

KW - DIII-D

KW - Edge plasma

KW - Intermittent transport

KW - Probes

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U2 - 10.1016/j.jnucmat.2004.10.094

DO - 10.1016/j.jnucmat.2004.10.094

M3 - Article

AN - SCOPUS:13844296882

SN - 0022-3115

VL - 337-339

SP - 717

EP - 721

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3

ER -

Far scrape-off layer and near wall plasma studies in DIII-D

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Keywords

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