Recent DIII-D divertor research

S. L. Allen; A. S. Bozek; N. H. Brooks; D. A. Buchenauer; K. H. Burrell; T. N. Carlstrom; J. W. Cuthbertson; J. C. Deboo; R. Ellis; J. C. Evans; T. E. Evans; M. E. Fenstermacher; R. W. Geer; Ghendrih Ph Ghendrih; R. J. Groebner; D. N. Hill; D. L. Hillis; J. T. Hogan; M. A. Hollerbach; K. L. Holtrop; C. L. Hsieh; A. W. Hyatt; G. L. Jackson; R. A. James; W. R. Johnson; R. Jong; R. Junge; C. C. Klepper; C. J. Lasnier; G. J. Laughon; A. W. Leonard; M. A. Mahdavi; R. Maingi; M. M. Menon; P. K. Mioduszewski; R. A. Moyer; W. H. Meyer; D. G. Nilson; T. H. Osborne; D. O. Overskei; L. W. Owen; T. W. Petrie; D. A. Phelps; G. D. Porter; M. E. Rensink; G. T. Sager; M. J. Schaffer; K. M. Schaubel; T. C. Simonen; J. P. Smith; G. M. Staebler; R. D. Stambaugh; R. E. Stockdale; D. M. Thomas; M. R. Wade

doi:10.1088/0741-3335/37/11A/012

Recent DIII-D divertor research

S. L. Allen, A. S. Bozek, N. H. Brooks, D. A. Buchenauer, K. H. Burrell, T. N. Carlstrom, J. W. Cuthbertson, J. C. Deboo, R. Ellis, J. C. Evans, T. E. Evans, M. E. Fenstermacher, R. W. Geer, Ghendrih Ph Ghendrih, R. J. Groebner, D. N. Hill, D. L. Hillis, J. T. Hogan, M. A. Hollerbach, K. L. HoltropC. L. Hsieh, A. W. Hyatt, G. L. Jackson, R. A. James, W. R. Johnson, R. Jong, R. Junge, C. C. Klepper, C. J. Lasnier, G. J. Laughon, A. W. Leonard, M. A. Mahdavi, R. Maingi, M. M. Menon, P. K. Mioduszewski, R. A. Moyer, W. H. Meyer, D. G. Nilson, T. H. Osborne, D. O. Overskei, L. W. Owen, T. W. Petrie, D. A. Phelps, G. D. Porter, M. E. Rensink, G. T. Sager, M. J. Schaffer, K. M. Schaubel, T. C. Simonen, J. P. Smith, G. M. Staebler, R. D. Stambaugh, R. E. Stockdale, D. M. Thomas, M. R. Wade

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Abstract

DIII-D currently operates with a single- or double-null open divertor and graphite walls. Active particle control with a divertor cryopump has demonstrated density control, efficient helium exhaust, and reduction of the inventory of particles in the wall. Gas puffing of D₂ and impurities has demonstrated reduction of the peak divertor heat flux by factors of 3-5 by radiation. A combination of active cryopumping and feedback-controlled D ₂ gas puffing has produced similar divertor heat flux reduction with density control. Experiments with neon puffing have shown that the radiation is equally-divided between a localized zone near the X-point and a mantle around the plasma core. The density in these experiments has also been controlled with cryopumping. These experimental results combined with modeling were used to develop the new radiative divertor for DIII-D. This is a double-null slot divertor with four cryopumps to provide particle control and neutral shielding for high-triangularity advanced tokamak discharges UEDGE and DEGAS simulations, benchmarked to experimental data, have been used to optimize the design.

Original language	English
Article number	012
Pages (from-to)	A191-A202
Journal	Plasma Physics and Controlled Fusion
Volume	37
Issue number	11A
DOIs	https://doi.org/10.1088/0741-3335/37/11A/012
State	Published - 1995
Externally published	Yes

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10.1088/0741-3335/37/11A/012

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Allen, S. L., Bozek, A. S., Brooks, N. H., Buchenauer, D. A., Burrell, K. H., Carlstrom, T. N., Cuthbertson, J. W., Deboo, J. C., Ellis, R., Evans, J. C., Evans, T. E., Fenstermacher, M. E., Geer, R. W., Ph Ghendrih, G., Groebner, R. J., Hill, D. N., Hillis, D. L., Hogan, J. T., Hollerbach, M. A., ... Wade, M. R. (1995). Recent DIII-D divertor research. Plasma Physics and Controlled Fusion, 37(11A), A191-A202. Article 012. https://doi.org/10.1088/0741-3335/37/11A/012

@article{90af4bdb43b14757acf51dafd2e41d3d,

title = "Recent DIII-D divertor research",

abstract = "DIII-D currently operates with a single- or double-null open divertor and graphite walls. Active particle control with a divertor cryopump has demonstrated density control, efficient helium exhaust, and reduction of the inventory of particles in the wall. Gas puffing of D2 and impurities has demonstrated reduction of the peak divertor heat flux by factors of 3-5 by radiation. A combination of active cryopumping and feedback-controlled D 2 gas puffing has produced similar divertor heat flux reduction with density control. Experiments with neon puffing have shown that the radiation is equally-divided between a localized zone near the X-point and a mantle around the plasma core. The density in these experiments has also been controlled with cryopumping. These experimental results combined with modeling were used to develop the new radiative divertor for DIII-D. This is a double-null slot divertor with four cryopumps to provide particle control and neutral shielding for high-triangularity advanced tokamak discharges UEDGE and DEGAS simulations, benchmarked to experimental data, have been used to optimize the design.",

author = "Allen, {S. L.} and Bozek, {A. S.} and Brooks, {N. H.} and Buchenauer, {D. A.} and Burrell, {K. H.} and Carlstrom, {T. N.} and Cuthbertson, {J. W.} and Deboo, {J. C.} and R. Ellis and Evans, {J. C.} and Evans, {T. E.} and Fenstermacher, {M. E.} and Geer, {R. W.} and {Ph Ghendrih}, Ghendrih and Groebner, {R. J.} and Hill, {D. N.} and Hillis, {D. L.} and Hogan, {J. T.} and Hollerbach, {M. A.} and Holtrop, {K. L.} and Hsieh, {C. L.} and Hyatt, {A. W.} and Jackson, {G. L.} and James, {R. A.} and Johnson, {W. R.} and R. Jong and R. Junge and Klepper, {C. C.} and Lasnier, {C. J.} and Laughon, {G. J.} and Leonard, {A. W.} and Mahdavi, {M. A.} and R. Maingi and Menon, {M. M.} and Mioduszewski, {P. K.} and Moyer, {R. A.} and Meyer, {W. H.} and Nilson, {D. G.} and Osborne, {T. H.} and Overskei, {D. O.} and Owen, {L. W.} and Petrie, {T. W.} and Phelps, {D. A.} and Porter, {G. D.} and Rensink, {M. E.} and Sager, {G. T.} and Schaffer, {M. J.} and Schaubel, {K. M.} and Simonen, {T. C.} and Smith, {J. P.} and Staebler, {G. M.} and Stambaugh, {R. D.} and Stockdale, {R. E.} and Thomas, {D. M.} and Wade, {M. R.}",

year = "1995",

doi = "10.1088/0741-3335/37/11A/012",

language = "English",

volume = "37",

pages = "A191--A202",

journal = "Plasma Physics and Controlled Fusion",

issn = "0741-3335",

publisher = "IOP Publishing",

number = "11A",

}

Allen, SL, Bozek, AS, Brooks, NH, Buchenauer, DA, Burrell, KH, Carlstrom, TN, Cuthbertson, JW, Deboo, JC, Ellis, R, Evans, JC, Evans, TE, Fenstermacher, ME, Geer, RW, Ph Ghendrih, G, Groebner, RJ, Hill, DN, Hillis, DL, Hogan, JT, Hollerbach, MA, Holtrop, KL, Hsieh, CL, Hyatt, AW, Jackson, GL, James, RA, Johnson, WR, Jong, R, Junge, R, Klepper, CC, Lasnier, CJ, Laughon, GJ, Leonard, AW, Mahdavi, MA, Maingi, R, Menon, MM, Mioduszewski, PK, Moyer, RA, Meyer, WH, Nilson, DG, Osborne, TH, Overskei, DO, Owen, LW, Petrie, TW, Phelps, DA, Porter, GD, Rensink, ME, Sager, GT, Schaffer, MJ, Schaubel, KM, Simonen, TC, Smith, JP, Staebler, GM, Stambaugh, RD, Stockdale, RE, Thomas, DM & Wade, MR 1995, 'Recent DIII-D divertor research', Plasma Physics and Controlled Fusion, vol. 37, no. 11A, 012, pp. A191-A202. https://doi.org/10.1088/0741-3335/37/11A/012

TY - JOUR

T1 - Recent DIII-D divertor research

AU - Allen, S. L.

AU - Bozek, A. S.

AU - Brooks, N. H.

AU - Buchenauer, D. A.

AU - Burrell, K. H.

AU - Carlstrom, T. N.

AU - Cuthbertson, J. W.

AU - Deboo, J. C.

AU - Ellis, R.

AU - Evans, J. C.

AU - Evans, T. E.

AU - Fenstermacher, M. E.

AU - Geer, R. W.

AU - Ph Ghendrih, Ghendrih

AU - Groebner, R. J.

AU - Hill, D. N.

AU - Hillis, D. L.

AU - Hogan, J. T.

AU - Hollerbach, M. A.

AU - Holtrop, K. L.

AU - Hsieh, C. L.

AU - Hyatt, A. W.

AU - Jackson, G. L.

AU - James, R. A.

AU - Johnson, W. R.

AU - Jong, R.

AU - Junge, R.

AU - Klepper, C. C.

AU - Lasnier, C. J.

AU - Laughon, G. J.

AU - Leonard, A. W.

AU - Mahdavi, M. A.

AU - Maingi, R.

AU - Menon, M. M.

AU - Mioduszewski, P. K.

AU - Moyer, R. A.

AU - Meyer, W. H.

AU - Nilson, D. G.

AU - Osborne, T. H.

AU - Overskei, D. O.

AU - Owen, L. W.

AU - Petrie, T. W.

AU - Phelps, D. A.

AU - Porter, G. D.

AU - Rensink, M. E.

AU - Sager, G. T.

AU - Schaffer, M. J.

AU - Schaubel, K. M.

AU - Simonen, T. C.

AU - Smith, J. P.

AU - Staebler, G. M.

AU - Stambaugh, R. D.

AU - Stockdale, R. E.

AU - Thomas, D. M.

AU - Wade, M. R.

PY - 1995

Y1 - 1995

N2 - DIII-D currently operates with a single- or double-null open divertor and graphite walls. Active particle control with a divertor cryopump has demonstrated density control, efficient helium exhaust, and reduction of the inventory of particles in the wall. Gas puffing of D2 and impurities has demonstrated reduction of the peak divertor heat flux by factors of 3-5 by radiation. A combination of active cryopumping and feedback-controlled D 2 gas puffing has produced similar divertor heat flux reduction with density control. Experiments with neon puffing have shown that the radiation is equally-divided between a localized zone near the X-point and a mantle around the plasma core. The density in these experiments has also been controlled with cryopumping. These experimental results combined with modeling were used to develop the new radiative divertor for DIII-D. This is a double-null slot divertor with four cryopumps to provide particle control and neutral shielding for high-triangularity advanced tokamak discharges UEDGE and DEGAS simulations, benchmarked to experimental data, have been used to optimize the design.

AB - DIII-D currently operates with a single- or double-null open divertor and graphite walls. Active particle control with a divertor cryopump has demonstrated density control, efficient helium exhaust, and reduction of the inventory of particles in the wall. Gas puffing of D2 and impurities has demonstrated reduction of the peak divertor heat flux by factors of 3-5 by radiation. A combination of active cryopumping and feedback-controlled D 2 gas puffing has produced similar divertor heat flux reduction with density control. Experiments with neon puffing have shown that the radiation is equally-divided between a localized zone near the X-point and a mantle around the plasma core. The density in these experiments has also been controlled with cryopumping. These experimental results combined with modeling were used to develop the new radiative divertor for DIII-D. This is a double-null slot divertor with four cryopumps to provide particle control and neutral shielding for high-triangularity advanced tokamak discharges UEDGE and DEGAS simulations, benchmarked to experimental data, have been used to optimize the design.

UR - http://www.scopus.com/inward/record.url?scp=0029404274&partnerID=8YFLogxK

U2 - 10.1088/0741-3335/37/11A/012

DO - 10.1088/0741-3335/37/11A/012

M3 - Article

AN - SCOPUS:0029404274

SN - 0741-3335

VL - 37

SP - A191-A202

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 11A

M1 - 012

ER -

Recent DIII-D divertor research

Abstract

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