Toroidally resolved structure of divertor heat flux in RMP H-mode discharges on DIII-D

M. W. Jakubowski; T. E. Evans; M. E. Fenstermacher; C. J. Lasnier; R. C. Wolf; L. R. Baylor; J. A. Boedo; K. H. Burrell; J. S. Degrassie; P. Gohil; S. Mordijck; R. Laengner; A. W. Leonard; R. A. Moyer; T. W. Petrie; C. C. Petty; R. I. Pinsker; T. L. Rhodes; M. J. Schaffer; O. Schmitz; P. B. Snyder; H. Stoschus; T. H. Osborne; D. M. Orlov; E. A. Unterberg; J. G. Watkins

doi:10.1016/j.jnucmat.2010.12.005

Toroidally resolved structure of divertor heat flux in RMP H-mode discharges on DIII-D

M. W. Jakubowski, T. E. Evans, M. E. Fenstermacher, C. J. Lasnier, R. C. Wolf, L. R. Baylor, J. A. Boedo, K. H. Burrell, J. S. Degrassie, P. Gohil, S. Mordijck, R. Laengner, A. W. Leonard, R. A. Moyer, T. W. Petrie, C. C. Petty, R. I. Pinsker, T. L. Rhodes, M. J. Schaffer, O. SchmitzP. B. Snyder, H. Stoschus, T. H. Osborne, D. M. Orlov, E. A. Unterberg, J. G. Watkins

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Abstract

As shown on DIII-D edge localized modes (ELMs) can be either completely eliminated or mitigated with resonant magnetic perturbation (RMP) fields. Two infrared cameras, separated 105° toroidally, were used to make simultaneous measurements of ELM heat loads with high frame rates. Without the RMP fields ELMs display a variety of different heat load dynamics and a range of toroidal variability that is characteristic of their 3D structure. Comparing radial averages there is no asymmetry between two toroidal locations. With RMP-mitigated ELMs, the variability in the radially averaged power loads is significantly reduced and toroidal asymmetries in power loads are introduced. In addition to RMP ELM suppression scenarios an RMP scenario with only very small ELMs and very good confinement has been achieved.

Original language	English
Pages (from-to)	S901-S905
Journal	Journal of Nuclear Materials
Volume	415
Issue number	1 SUPPL
DOIs	https://doi.org/10.1016/j.jnucmat.2010.12.005
State	Published - Aug 1 2011

Funding

This work was supported in part by the US Department of Energy under DE-FC02-04ER54698, DE-AC52-07NA27344, DE-AC05-00OR22725, DE-FG02-07ER54917, DE-FG03-08ER54984, and DE-AC04-94AL85000.

Funders	Funder number
US Department of Energy	DE-AC05-00OR22725, DE-AC04-94AL85000, DE-FC02-04ER54698, DE-AC52-07NA27344, DE-FG02-07ER54917, DE-FG03-08ER54984

UN SDGs

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

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10.1016/j.jnucmat.2010.12.005

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Jakubowski, M. W., Evans, T. E., Fenstermacher, M. E., Lasnier, C. J., Wolf, R. C., Baylor, L. R., Boedo, J. A., Burrell, K. H., Degrassie, J. S., Gohil, P., Mordijck, S., Laengner, R., Leonard, A. W., Moyer, R. A., Petrie, T. W., Petty, C. C., Pinsker, R. I., Rhodes, T. L., Schaffer, M. J., ... Watkins, J. G. (2011). Toroidally resolved structure of divertor heat flux in RMP H-mode discharges on DIII-D. Journal of Nuclear Materials, 415(1 SUPPL), S901-S905. https://doi.org/10.1016/j.jnucmat.2010.12.005

@article{cc91e79a99354f9a9cce9cf519b2363c,

title = "Toroidally resolved structure of divertor heat flux in RMP H-mode discharges on DIII-D",

abstract = "As shown on DIII-D edge localized modes (ELMs) can be either completely eliminated or mitigated with resonant magnetic perturbation (RMP) fields. Two infrared cameras, separated 105° toroidally, were used to make simultaneous measurements of ELM heat loads with high frame rates. Without the RMP fields ELMs display a variety of different heat load dynamics and a range of toroidal variability that is characteristic of their 3D structure. Comparing radial averages there is no asymmetry between two toroidal locations. With RMP-mitigated ELMs, the variability in the radially averaged power loads is significantly reduced and toroidal asymmetries in power loads are introduced. In addition to RMP ELM suppression scenarios an RMP scenario with only very small ELMs and very good confinement has been achieved.",

author = "Jakubowski, {M. W.} and Evans, {T. E.} and Fenstermacher, {M. E.} and Lasnier, {C. J.} and Wolf, {R. C.} and Baylor, {L. R.} and Boedo, {J. A.} and Burrell, {K. H.} and Degrassie, {J. S.} and P. Gohil and S. Mordijck and R. Laengner and Leonard, {A. W.} and Moyer, {R. A.} and Petrie, {T. W.} and Petty, {C. C.} and Pinsker, {R. I.} and Rhodes, {T. L.} and Schaffer, {M. J.} and O. Schmitz and Snyder, {P. B.} and H. Stoschus and Osborne, {T. H.} and Orlov, {D. M.} and Unterberg, {E. A.} and Watkins, {J. G.}",

year = "2011",

month = aug,

day = "1",

doi = "10.1016/j.jnucmat.2010.12.005",

language = "English",

volume = "415",

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Jakubowski, MW, Evans, TE, Fenstermacher, ME, Lasnier, CJ, Wolf, RC, Baylor, LR, Boedo, JA, Burrell, KH, Degrassie, JS, Gohil, P, Mordijck, S, Laengner, R, Leonard, AW, Moyer, RA, Petrie, TW, Petty, CC, Pinsker, RI, Rhodes, TL, Schaffer, MJ, Schmitz, O, Snyder, PB, Stoschus, H, Osborne, TH, Orlov, DM, Unterberg, EA & Watkins, JG 2011, 'Toroidally resolved structure of divertor heat flux in RMP H-mode discharges on DIII-D', Journal of Nuclear Materials, vol. 415, no. 1 SUPPL, pp. S901-S905. https://doi.org/10.1016/j.jnucmat.2010.12.005

TY - JOUR

T1 - Toroidally resolved structure of divertor heat flux in RMP H-mode discharges on DIII-D

AU - Jakubowski, M. W.

AU - Evans, T. E.

AU - Fenstermacher, M. E.

AU - Lasnier, C. J.

AU - Wolf, R. C.

AU - Baylor, L. R.

AU - Boedo, J. A.

AU - Burrell, K. H.

AU - Degrassie, J. S.

AU - Gohil, P.

AU - Mordijck, S.

AU - Laengner, R.

AU - Leonard, A. W.

AU - Moyer, R. A.

AU - Petrie, T. W.

AU - Petty, C. C.

AU - Pinsker, R. I.

AU - Rhodes, T. L.

AU - Schaffer, M. J.

AU - Schmitz, O.

AU - Snyder, P. B.

AU - Stoschus, H.

AU - Osborne, T. H.

AU - Orlov, D. M.

AU - Unterberg, E. A.

AU - Watkins, J. G.

PY - 2011/8/1

Y1 - 2011/8/1

N2 - As shown on DIII-D edge localized modes (ELMs) can be either completely eliminated or mitigated with resonant magnetic perturbation (RMP) fields. Two infrared cameras, separated 105° toroidally, were used to make simultaneous measurements of ELM heat loads with high frame rates. Without the RMP fields ELMs display a variety of different heat load dynamics and a range of toroidal variability that is characteristic of their 3D structure. Comparing radial averages there is no asymmetry between two toroidal locations. With RMP-mitigated ELMs, the variability in the radially averaged power loads is significantly reduced and toroidal asymmetries in power loads are introduced. In addition to RMP ELM suppression scenarios an RMP scenario with only very small ELMs and very good confinement has been achieved.

AB - As shown on DIII-D edge localized modes (ELMs) can be either completely eliminated or mitigated with resonant magnetic perturbation (RMP) fields. Two infrared cameras, separated 105° toroidally, were used to make simultaneous measurements of ELM heat loads with high frame rates. Without the RMP fields ELMs display a variety of different heat load dynamics and a range of toroidal variability that is characteristic of their 3D structure. Comparing radial averages there is no asymmetry between two toroidal locations. With RMP-mitigated ELMs, the variability in the radially averaged power loads is significantly reduced and toroidal asymmetries in power loads are introduced. In addition to RMP ELM suppression scenarios an RMP scenario with only very small ELMs and very good confinement has been achieved.

UR - http://www.scopus.com/inward/record.url?scp=80054838785&partnerID=8YFLogxK

U2 - 10.1016/j.jnucmat.2010.12.005

DO - 10.1016/j.jnucmat.2010.12.005

M3 - Article

AN - SCOPUS:80054838785

SN - 0022-3115

VL - 415

SP - S901-S905

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1 SUPPL

ER -

Toroidally resolved structure of divertor heat flux in RMP H-mode discharges on DIII-D

Abstract

Funding

UN SDGs

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