Experiments and computational modeling focused on divertor and SOL optimization for advanced tokamak operation on DIII-D

S. L. Allen; J. A. Boedo; A. S. Bozek; N. H. Brooks; T. N. Carlstrom; T. A. Casper; R. J. Colchin; T. E. Evans; M. E. Fenstermacher; M. E. Friend; R. C. Isler; R. Jayakumar; C. J. Lasnier; A. W. Leonard; M. A. Mahdavi; R. Maingi; G. R. McKee; R. A. Moyer; M. Murakami; T. H. Osborne; R. C. O'Neill; T. W. Pétrie; G. D. Porter; A. T. Ramsey; M. J. Schaffer; P. C. Stangeby; R. D. Stambaugh; M. R. Wade; J. G. Walking; W. P. West; D. G. Whyte; N. S. Wolf

doi:10.1016/S0022-3115(00)00501-8

Experiments and computational modeling focused on divertor and SOL optimization for advanced tokamak operation on DIII-D

S. L. Allen, J. A. Boedo, A. S. Bozek, N. H. Brooks, T. N. Carlstrom, T. A. Casper, R. J. Colchin, T. E. Evans, M. E. Fenstermacher, M. E. Friend, R. C. Isler, R. Jayakumar, C. J. Lasnier, A. W. Leonard, M. A. Mahdavi, R. Maingi, G. R. McKee, R. A. Moyer, M. Murakami, T. H. OsborneR. C. O'Neill, T. W. Pétrie, G. D. Porter, A. T. Ramsey, M. J. Schaffer, P. C. Stangeby, R. D. Stambaugh, M. R. Wade, J. G. Walking, W. P. West, D. G. Whyte, N. S. Wolf

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

9 Scopus citations

Abstract

We present the results from DIII-D experiments and modeling focused on the divertor issues of an `Advanced Tokamak' (AT). Operation at high plasma pressure β with good energy confinement H requires core and divertor plasma shaping and current profile J(r) control with ECH current drive. Transport modeling indicates that the available DIII-D ECH power determines a density and temperature regime for sustained DIII-D AT experiments. We demonstrate that a high-δ, unbalanced double null divertor with cryopumping (D-2000) is a flexible AT divertor. Impurity levels in AT experiments have been reduced by careful alignment of the divertor tiles; this, in turn has changed the time evolution of the core J(r) profiles. New physics has been observed near the X-point and private flux regions, including flow reversal and recombination, that is important in understanding and controlling the flows and thereby the radiation in the divertor region, which reduces the divertor heat flux.

Original language	English
Pages (from-to)	995-1001
Number of pages	7
Journal	Journal of Nuclear Materials
Volume	290-293
DOIs	https://doi.org/10.1016/S0022-3115(00)00501-8
State	Published - Mar 2001
Externally published	Yes

Funding

Work supported by US Department of Energy under Contracts DE-AC03-89ER51114, DE-AC05-96OR22464, W-7405-ENG-48, DE-AC04-94AL85000, and Grant DE-FG03-95ER54294.

Funders	Funder number
US Department of Energy	DE-AC03-89ER51114, DE-AC05-96OR22464, DE-FG03-95ER54294, DE-AC04-94AL85000, W-7405-ENG-48

UN SDGs

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

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10.1016/S0022-3115(00)00501-8

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Allen, S. L., Boedo, J. A., Bozek, A. S., Brooks, N. H., Carlstrom, T. N., Casper, T. A., Colchin, R. J., Evans, T. E., Fenstermacher, M. E., Friend, M. E., Isler, R. C., Jayakumar, R., Lasnier, C. J., Leonard, A. W., Mahdavi, M. A., Maingi, R., McKee, G. R., Moyer, R. A., Murakami, M., ... Wolf, N. S. (2001). Experiments and computational modeling focused on divertor and SOL optimization for advanced tokamak operation on DIII-D. Journal of Nuclear Materials, 290-293, 995-1001. https://doi.org/10.1016/S0022-3115(00)00501-8

@article{685366069be64499b1094c78d7416af5,

title = "Experiments and computational modeling focused on divertor and SOL optimization for advanced tokamak operation on DIII-D",

abstract = "We present the results from DIII-D experiments and modeling focused on the divertor issues of an `Advanced Tokamak' (AT). Operation at high plasma pressure β with good energy confinement H requires core and divertor plasma shaping and current profile J(r) control with ECH current drive. Transport modeling indicates that the available DIII-D ECH power determines a density and temperature regime for sustained DIII-D AT experiments. We demonstrate that a high-δ, unbalanced double null divertor with cryopumping (D-2000) is a flexible AT divertor. Impurity levels in AT experiments have been reduced by careful alignment of the divertor tiles; this, in turn has changed the time evolution of the core J(r) profiles. New physics has been observed near the X-point and private flux regions, including flow reversal and recombination, that is important in understanding and controlling the flows and thereby the radiation in the divertor region, which reduces the divertor heat flux.",

author = "Allen, {S. L.} and Boedo, {J. A.} and Bozek, {A. S.} and Brooks, {N. H.} and Carlstrom, {T. N.} and Casper, {T. A.} and Colchin, {R. J.} and Evans, {T. E.} and Fenstermacher, {M. E.} and Friend, {M. E.} and Isler, {R. C.} and R. Jayakumar and Lasnier, {C. J.} and Leonard, {A. W.} and Mahdavi, {M. A.} and R. Maingi and McKee, {G. R.} and Moyer, {R. A.} and M. Murakami and Osborne, {T. H.} and O'Neill, {R. C.} and P{\'e}trie, {T. W.} and Porter, {G. D.} and Ramsey, {A. T.} and Schaffer, {M. J.} and Stangeby, {P. C.} and Stambaugh, {R. D.} and Wade, {M. R.} and Walking, {J. G.} and West, {W. P.} and Whyte, {D. G.} and Wolf, {N. S.}",

year = "2001",

month = mar,

doi = "10.1016/S0022-3115(00)00501-8",

language = "English",

volume = "290-293",

pages = "995--1001",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

}

Allen, SL, Boedo, JA, Bozek, AS, Brooks, NH, Carlstrom, TN, Casper, TA, Colchin, RJ, Evans, TE, Fenstermacher, ME, Friend, ME, Isler, RC, Jayakumar, R, Lasnier, CJ, Leonard, AW, Mahdavi, MA, Maingi, R, McKee, GR, Moyer, RA, Murakami, M, Osborne, TH, O'Neill, RC, Pétrie, TW, Porter, GD, Ramsey, AT, Schaffer, MJ, Stangeby, PC, Stambaugh, RD, Wade, MR, Walking, JG, West, WP, Whyte, DG & Wolf, NS 2001, 'Experiments and computational modeling focused on divertor and SOL optimization for advanced tokamak operation on DIII-D', Journal of Nuclear Materials, vol. 290-293, pp. 995-1001. https://doi.org/10.1016/S0022-3115(00)00501-8

TY - JOUR

T1 - Experiments and computational modeling focused on divertor and SOL optimization for advanced tokamak operation on DIII-D

AU - Allen, S. L.

AU - Boedo, J. A.

AU - Bozek, A. S.

AU - Brooks, N. H.

AU - Carlstrom, T. N.

AU - Casper, T. A.

AU - Colchin, R. J.

AU - Evans, T. E.

AU - Fenstermacher, M. E.

AU - Friend, M. E.

AU - Isler, R. C.

AU - Jayakumar, R.

AU - Lasnier, C. J.

AU - Leonard, A. W.

AU - Mahdavi, M. A.

AU - Maingi, R.

AU - McKee, G. R.

AU - Moyer, R. A.

AU - Murakami, M.

AU - Osborne, T. H.

AU - O'Neill, R. C.

AU - Pétrie, T. W.

AU - Porter, G. D.

AU - Ramsey, A. T.

AU - Schaffer, M. J.

AU - Stangeby, P. C.

AU - Stambaugh, R. D.

AU - Wade, M. R.

AU - Walking, J. G.

AU - West, W. P.

AU - Whyte, D. G.

AU - Wolf, N. S.

PY - 2001/3

Y1 - 2001/3

N2 - We present the results from DIII-D experiments and modeling focused on the divertor issues of an `Advanced Tokamak' (AT). Operation at high plasma pressure β with good energy confinement H requires core and divertor plasma shaping and current profile J(r) control with ECH current drive. Transport modeling indicates that the available DIII-D ECH power determines a density and temperature regime for sustained DIII-D AT experiments. We demonstrate that a high-δ, unbalanced double null divertor with cryopumping (D-2000) is a flexible AT divertor. Impurity levels in AT experiments have been reduced by careful alignment of the divertor tiles; this, in turn has changed the time evolution of the core J(r) profiles. New physics has been observed near the X-point and private flux regions, including flow reversal and recombination, that is important in understanding and controlling the flows and thereby the radiation in the divertor region, which reduces the divertor heat flux.

AB - We present the results from DIII-D experiments and modeling focused on the divertor issues of an `Advanced Tokamak' (AT). Operation at high plasma pressure β with good energy confinement H requires core and divertor plasma shaping and current profile J(r) control with ECH current drive. Transport modeling indicates that the available DIII-D ECH power determines a density and temperature regime for sustained DIII-D AT experiments. We demonstrate that a high-δ, unbalanced double null divertor with cryopumping (D-2000) is a flexible AT divertor. Impurity levels in AT experiments have been reduced by careful alignment of the divertor tiles; this, in turn has changed the time evolution of the core J(r) profiles. New physics has been observed near the X-point and private flux regions, including flow reversal and recombination, that is important in understanding and controlling the flows and thereby the radiation in the divertor region, which reduces the divertor heat flux.

UR - http://www.scopus.com/inward/record.url?scp=0035278597&partnerID=8YFLogxK

U2 - 10.1016/S0022-3115(00)00501-8

DO - 10.1016/S0022-3115(00)00501-8

M3 - Article

AN - SCOPUS:0035278597

SN - 0022-3115

VL - 290-293

SP - 995

EP - 1001

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

Experiments and computational modeling focused on divertor and SOL optimization for advanced tokamak operation on DIII-D

Abstract

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