Edge plasma effects in DIII-D impurity seeded discharges

G. L. Jackson; J. A. Boedo; C. J. Lasnier; A. W. Leonard; G. R. McKee; M. Murakami; M. R. Wade; J. G. Watkins; W. P. West; D. G. Whyte

doi:10.1016/S0022-3115(02)01469-1

Edge plasma effects in DIII-D impurity seeded discharges

G. L. Jackson, J. A. Boedo, C. J. Lasnier, A. W. Leonard, G. R. McKee, M. Murakami, M. R. Wade, J. G. Watkins, W. P. West, D. G. Whyte

Fusion and Fission Energy and Science Di

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

DIII-D, ELMing H-mode radiating mantle discharges have been obtained with electron density near the Greenwald density limit and a large fraction of the input power radiated inside the last closed flux surface, significantly reducing peak divertor heat fluxes. In these 'puff and pump' discharges, the introduction of argon reduces particle flux to divertor tiles by a factor of 4 while peak heat flux is half of the no impurity value, suggesting that impurity seeding may be a useful control tool to reduce wall heat and particle fluxes in fusion reactors. A robust H-mode transport barrier is maintained and there are only small changes in the ELM energy and ELM frequency.

Original language	English
Pages (from-to)	878-882
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	313-316
Issue number	SUPPL.
DOIs	https://doi.org/10.1016/S0022-3115(02)01469-1
State	Published - Mar 2003
Event	Plasma - Surface Interactions in Controlled Fusion Devices - Gifu, Japan Duration: May 26 2002 → May 31 2002

Funding

Work supported by US Department of Energy under contracts DE-AC03-99ER54463, W-7405-ENG-48, DE-AC05-00OR22725, DE-AC04-94AL85000, and grants DE-FG03-95ER54294, and DE-FG03-96ER54373.

Keywords

DIII-D
H-mode
Impurity seeding
SOL

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/S0022-3115(02)01469-1

Cite this

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title = "Edge plasma effects in DIII-D impurity seeded discharges",

abstract = "DIII-D, ELMing H-mode radiating mantle discharges have been obtained with electron density near the Greenwald density limit and a large fraction of the input power radiated inside the last closed flux surface, significantly reducing peak divertor heat fluxes. In these 'puff and pump' discharges, the introduction of argon reduces particle flux to divertor tiles by a factor of 4 while peak heat flux is half of the no impurity value, suggesting that impurity seeding may be a useful control tool to reduce wall heat and particle fluxes in fusion reactors. A robust H-mode transport barrier is maintained and there are only small changes in the ELM energy and ELM frequency.",

keywords = "DIII-D, H-mode, Impurity seeding, SOL",

author = "Jackson, {G. L.} and Boedo, {J. A.} and Lasnier, {C. J.} and Leonard, {A. W.} and McKee, {G. R.} and M. Murakami and Wade, {M. R.} and Watkins, {J. G.} and West, {W. P.} and Whyte, {D. G.}",

year = "2003",

month = mar,

doi = "10.1016/S0022-3115(02)01469-1",

language = "English",

volume = "313-316",

pages = "878--882",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

number = "SUPPL.",

note = "Plasma - Surface Interactions in Controlled Fusion Devices ; Conference date: 26-05-2002 Through 31-05-2002",

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TY - JOUR

T1 - Edge plasma effects in DIII-D impurity seeded discharges

AU - Jackson, G. L.

AU - Boedo, J. A.

AU - Lasnier, C. J.

AU - Leonard, A. W.

AU - McKee, G. R.

AU - Murakami, M.

AU - Wade, M. R.

AU - Watkins, J. G.

AU - West, W. P.

AU - Whyte, D. G.

PY - 2003/3

Y1 - 2003/3

N2 - DIII-D, ELMing H-mode radiating mantle discharges have been obtained with electron density near the Greenwald density limit and a large fraction of the input power radiated inside the last closed flux surface, significantly reducing peak divertor heat fluxes. In these 'puff and pump' discharges, the introduction of argon reduces particle flux to divertor tiles by a factor of 4 while peak heat flux is half of the no impurity value, suggesting that impurity seeding may be a useful control tool to reduce wall heat and particle fluxes in fusion reactors. A robust H-mode transport barrier is maintained and there are only small changes in the ELM energy and ELM frequency.

AB - DIII-D, ELMing H-mode radiating mantle discharges have been obtained with electron density near the Greenwald density limit and a large fraction of the input power radiated inside the last closed flux surface, significantly reducing peak divertor heat fluxes. In these 'puff and pump' discharges, the introduction of argon reduces particle flux to divertor tiles by a factor of 4 while peak heat flux is half of the no impurity value, suggesting that impurity seeding may be a useful control tool to reduce wall heat and particle fluxes in fusion reactors. A robust H-mode transport barrier is maintained and there are only small changes in the ELM energy and ELM frequency.

KW - DIII-D

KW - H-mode

KW - Impurity seeding

KW - SOL

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U2 - 10.1016/S0022-3115(02)01469-1

DO - 10.1016/S0022-3115(02)01469-1

M3 - Conference article

AN - SCOPUS:17444450681

SN - 0022-3115

VL - 313-316

SP - 878

EP - 882

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - SUPPL.

T2 - Plasma - Surface Interactions in Controlled Fusion Devices

Y2 - 26 May 2002 through 31 May 2002

ER -

Edge plasma effects in DIII-D impurity seeded discharges

Abstract

Funding

Keywords

UN SDGs

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