OEDGE modeling of the DIII-D H-mode 13CH4 puffing experiment

J. D. Elder; A. G. McLean; P. C. Stangeby; S. L. Allen; J. A. Boedo; B. D. Bray; N. H. Brooks; M. E. Fenstermacher; M. Groth; A. W. Leonard; D. Reiter; D. L. Rudakov; W. R. Wampler; J. G. Watkins; W. P. West; D. G. Whyte

doi:10.1016/j.jnucmat.2007.01.004

OEDGE modeling of the DIII-D H-mode 13CH4 puffing experiment

J. D. Elder^*, A. G. McLean, P. C. Stangeby, S. L. Allen, J. A. Boedo, B. D. Bray, N. H. Brooks, M. E. Fenstermacher, M. Groth, A. W. Leonard, D. Reiter, D. L. Rudakov, W. R. Wampler, J. G. Watkins, W. P. West, D. G. Whyte

^*Corresponding author for this work

Not published at Aalto University

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

16 Citations (Scopus)

Abstract

Use of carbon in tokamaks leads to a serious tritium retention issue due to co-deposition. To further investigate the processes involved, a detached ELMy H-mode (6.5 MW NBI) experiment was performed on DIII-D in which ¹³CH₄ was puffed into the main vessel through the toroidaly symmetric pumping plenum at the top of lower single-null discharges. Subsequently, the ¹³C content of tiles taken from the vessel wall was measured. The interpretive OEDGE code was used to model the results. The ¹³C deposition pattern could be reproduced, in general shape and magnitude, by assuming in the code the existence of a parallel flow and a radial pinch in the scrape-off layer. Parallel flows of Mach ∼0.3 toward the inner divertor and a radial pinch ∼10-20 m/s (+R-direction) were found to yield ¹³C deposition comparable to the experiment.

Original language	English
Pages (from-to)	140-145
Number of pages	6
Journal	Journal of Nuclear Materials
Volume	363-365
DOIs	https://doi.org/10.1016/j.jnucmat.2007.01.004
Publication status	Published - 15 Jun 2007
MoE publication type	A1 Journal article-refereed

Keywords

C0100
Carbon impurities
D0500
DIII-D
Edge modeling
I0100
Impurity transport
OEDGE
P0600
T0100

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10.1016/j.jnucmat.2007.01.004

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Elder, J. D., McLean, A. G., Stangeby, P. C., Allen, S. L., Boedo, J. A., Bray, B. D., Brooks, N. H., Fenstermacher, M. E., Groth, M., Leonard, A. W., Reiter, D., Rudakov, D. L., Wampler, W. R., Watkins, J. G., West, W. P., & Whyte, D. G. (2007). OEDGE modeling of the DIII-D H-mode 13CH4 puffing experiment. Journal of Nuclear Materials, 363-365, 140-145. https://doi.org/10.1016/j.jnucmat.2007.01.004

@article{38e92a792a424ec9827094c05a4d0885,

title = "OEDGE modeling of the DIII-D H-mode 13CH4 puffing experiment",

abstract = "Use of carbon in tokamaks leads to a serious tritium retention issue due to co-deposition. To further investigate the processes involved, a detached ELMy H-mode (6.5 MW NBI) experiment was performed on DIII-D in which 13CH4 was puffed into the main vessel through the toroidaly symmetric pumping plenum at the top of lower single-null discharges. Subsequently, the 13C content of tiles taken from the vessel wall was measured. The interpretive OEDGE code was used to model the results. The 13C deposition pattern could be reproduced, in general shape and magnitude, by assuming in the code the existence of a parallel flow and a radial pinch in the scrape-off layer. Parallel flows of Mach ∼0.3 toward the inner divertor and a radial pinch ∼10-20 m/s (+R-direction) were found to yield 13C deposition comparable to the experiment.",

keywords = "C0100, Carbon impurities, D0500, DIII-D, Edge modeling, I0100, Impurity transport, OEDGE, P0600, T0100",

author = "Elder, {J. D.} and McLean, {A. G.} and Stangeby, {P. C.} and Allen, {S. L.} and Boedo, {J. A.} and Bray, {B. D.} and Brooks, {N. H.} and Fenstermacher, {M. E.} and M. Groth and Leonard, {A. W.} and D. Reiter and Rudakov, {D. L.} and Wampler, {W. R.} and Watkins, {J. G.} and West, {W. P.} and Whyte, {D. G.}",

year = "2007",

month = jun,

day = "15",

doi = "10.1016/j.jnucmat.2007.01.004",

language = "English",

volume = "363-365",

pages = "140--145",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

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TY - JOUR

T1 - OEDGE modeling of the DIII-D H-mode 13CH4 puffing experiment

AU - Elder, J. D.

AU - McLean, A. G.

AU - Stangeby, P. C.

AU - Allen, S. L.

AU - Boedo, J. A.

AU - Bray, B. D.

AU - Brooks, N. H.

AU - Fenstermacher, M. E.

AU - Groth, M.

AU - Leonard, A. W.

AU - Reiter, D.

AU - Rudakov, D. L.

AU - Wampler, W. R.

AU - Watkins, J. G.

AU - West, W. P.

AU - Whyte, D. G.

PY - 2007/6/15

Y1 - 2007/6/15

N2 - Use of carbon in tokamaks leads to a serious tritium retention issue due to co-deposition. To further investigate the processes involved, a detached ELMy H-mode (6.5 MW NBI) experiment was performed on DIII-D in which 13CH4 was puffed into the main vessel through the toroidaly symmetric pumping plenum at the top of lower single-null discharges. Subsequently, the 13C content of tiles taken from the vessel wall was measured. The interpretive OEDGE code was used to model the results. The 13C deposition pattern could be reproduced, in general shape and magnitude, by assuming in the code the existence of a parallel flow and a radial pinch in the scrape-off layer. Parallel flows of Mach ∼0.3 toward the inner divertor and a radial pinch ∼10-20 m/s (+R-direction) were found to yield 13C deposition comparable to the experiment.

AB - Use of carbon in tokamaks leads to a serious tritium retention issue due to co-deposition. To further investigate the processes involved, a detached ELMy H-mode (6.5 MW NBI) experiment was performed on DIII-D in which 13CH4 was puffed into the main vessel through the toroidaly symmetric pumping plenum at the top of lower single-null discharges. Subsequently, the 13C content of tiles taken from the vessel wall was measured. The interpretive OEDGE code was used to model the results. The 13C deposition pattern could be reproduced, in general shape and magnitude, by assuming in the code the existence of a parallel flow and a radial pinch in the scrape-off layer. Parallel flows of Mach ∼0.3 toward the inner divertor and a radial pinch ∼10-20 m/s (+R-direction) were found to yield 13C deposition comparable to the experiment.

KW - C0100

KW - Carbon impurities

KW - D0500

KW - DIII-D

KW - Edge modeling

KW - I0100

KW - Impurity transport

KW - OEDGE

KW - P0600

KW - T0100

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U2 - 10.1016/j.jnucmat.2007.01.004

DO - 10.1016/j.jnucmat.2007.01.004

M3 - Article

AN - SCOPUS:34248596065

SN - 0022-3115

VL - 363-365

SP - 140

EP - 145

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

OEDGE modeling of the DIII-D H-mode 13CH4 puffing experiment

Abstract

Keywords

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