Particle flux and radial profiles in the SOL of DIII-D during ELMing H-mode

A.W. Leonard; J.A. Boedo; D.L. Rudakov; M. Groth; G.D. Porter; B.L. Lipschultz; D.G. Whyte

doi:10.1016/j.jnucmat.2007.01.248

Particle flux and radial profiles in the SOL of DIII-D during ELMing H-mode

A.W. Leonard, J.A. Boedo, D.L. Rudakov, M. Groth, G.D. Porter, B.L. Lipschultz, D.G. Whyte

Physics

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

Abstract

The radial particle flux in the scrape-off-layer (SOL) during ELMing H-mode is examined in DIII-D as a function of density. The global radial particle flux in the outboard far SOL is determined by a window frame technique. Between ELMs, the outboard far SOL particle flux increases strongly with density and remains similar to the particle flux across the separatrix as estimated by the pedestal density and temperature gradients. At low density the steep density gradient of the pedestal extends up to 2 cm outside the separatrix, while at high density the density gradient flattens just outside the separatrix. During ELMs the far SOL particle flux becomes localized to the outboard midplane and the assumptions for the window frame analysis break down. Implications for scaling of outboard main chamber wall particle flux and pedestal fueling are explored.

Original language	English
Pages (from-to)	1066-1070
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	363-365
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2007.01.248
Publication status	Published - 15 Jun 2007

Access to Document

10.1016/j.jnucmat.2007.01.248

Cite this

@article{5693e0a0b00f4494b7742d817bd96130,

title = "Particle flux and radial profiles in the SOL of DIII-D during ELMing H-mode",

abstract = "The radial particle flux in the scrape-off-layer (SOL) during ELMing H-mode is examined in DIII-D as a function of density. The global radial particle flux in the outboard far SOL is determined by a window frame technique. Between ELMs, the outboard far SOL particle flux increases strongly with density and remains similar to the particle flux across the separatrix as estimated by the pedestal density and temperature gradients. At low density the steep density gradient of the pedestal extends up to 2 cm outside the separatrix, while at high density the density gradient flattens just outside the separatrix. During ELMs the far SOL particle flux becomes localized to the outboard midplane and the assumptions for the window frame analysis break down. Implications for scaling of outboard main chamber wall particle flux and pedestal fueling are explored.",

author = "A.W. Leonard and J.A. Boedo and D.L. Rudakov and M. Groth and G.D. Porter and B.L. Lipschultz and D.G. Whyte",

year = "2007",

month = jun,

day = "15",

doi = "10.1016/j.jnucmat.2007.01.248",

language = "English",

volume = "363-365",

pages = "1066--1070",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

number = "1-3",

}

TY - JOUR

T1 - Particle flux and radial profiles in the SOL of DIII-D during ELMing H-mode

AU - Leonard, A.W.

AU - Boedo, J.A.

AU - Rudakov, D.L.

AU - Groth, M.

AU - Porter, G.D.

AU - Lipschultz, B.L.

AU - Whyte, D.G.

PY - 2007/6/15

Y1 - 2007/6/15

N2 - The radial particle flux in the scrape-off-layer (SOL) during ELMing H-mode is examined in DIII-D as a function of density. The global radial particle flux in the outboard far SOL is determined by a window frame technique. Between ELMs, the outboard far SOL particle flux increases strongly with density and remains similar to the particle flux across the separatrix as estimated by the pedestal density and temperature gradients. At low density the steep density gradient of the pedestal extends up to 2 cm outside the separatrix, while at high density the density gradient flattens just outside the separatrix. During ELMs the far SOL particle flux becomes localized to the outboard midplane and the assumptions for the window frame analysis break down. Implications for scaling of outboard main chamber wall particle flux and pedestal fueling are explored.

AB - The radial particle flux in the scrape-off-layer (SOL) during ELMing H-mode is examined in DIII-D as a function of density. The global radial particle flux in the outboard far SOL is determined by a window frame technique. Between ELMs, the outboard far SOL particle flux increases strongly with density and remains similar to the particle flux across the separatrix as estimated by the pedestal density and temperature gradients. At low density the steep density gradient of the pedestal extends up to 2 cm outside the separatrix, while at high density the density gradient flattens just outside the separatrix. During ELMs the far SOL particle flux becomes localized to the outboard midplane and the assumptions for the window frame analysis break down. Implications for scaling of outboard main chamber wall particle flux and pedestal fueling are explored.

UR - http://www.scopus.com/inward/record.url?scp=34248592422&partnerID=8YFLogxK

U2 - 10.1016/j.jnucmat.2007.01.248

DO - 10.1016/j.jnucmat.2007.01.248

M3 - Article

AN - SCOPUS:34248592422

SN - 0022-3115

VL - 363-365

SP - 1066

EP - 1070

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3

ER -

Particle flux and radial profiles in the SOL of DIII-D during ELMing H-mode

Abstract

Access to Document

Other files and links

Cite this