Edge stochastization and collisionality dependence of the L-H power threshold with applied N=3 resonant magnetic perturbations

L. Schmitz; D. M. Kriete; R. S. Wilcox; T. L. Rhodes; L. Zeng; Z. Yan; G. R. McKee; T. E. Evans; C. Paz-Soldan; S. R. Haskey; B. A. Grierson; P. Gohil; B. Lyons; C. C. Petty; D. Orlov

Edge stochastization and collisionality dependence of the L-H power threshold with applied N=3 resonant magnetic perturbations

L. Schmitz, D. M. Kriete, R. S. Wilcox, T. L. Rhodes, L. Zeng, Z. Yan, G. R. McKee, T. E. Evans, C. Paz-Soldan, S. R. Haskey, B. A. Grierson, P. Gohil, B. Lyons, C. C. Petty, D. Orlov

Advanced Tokamak Physics

Research output: Contribution to conference › Paper › peer-review

Abstract

The stochastic edge magnetic field topology with applied resonant magnetic perturbations can explain the increased L-H power threshold [1,2] with applied n=3 resonant magnetic perturbations (RMP) in low rotation, ITER-similar-shape (ISS) plasmas in DIII-D. At low, ITER-relevant edge collisionality, the L-H power threshold is increased by a factor of almost three with respect to the Martin scaling. In this paper, reduced L-mode E×B shear with applied RMP is established as the likely cause of the increased L-H transition power threshold.

Original language	English
State	Published - 2019
Event	46th European Physical Society Conference on Plasma Physics, EPS 2019 - Milan, Italy Duration: Jul 8 2019 → Jul 12 2019

Conference

Conference	46th European Physical Society Conference on Plasma Physics, EPS 2019
Country/Territory	Italy
City	Milan
Period	07/8/19 → 07/12/19

Funding

*This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using the DIII-D National Fusion Facility, a DOE Office of Science user facility, under Awards DE-FG02-08ER54984, DE-FG02-89ER53296, DE-FG02-08ER 54999, and DE-FC02-04ER54698. DIII-D data shown in this paper can be obtained in digital format by following the links at https://fusion.gat.com/global/D3D_DMP. [1] P. Gohil, T.E. Evans, et al., Nucl. Fusion 51, 030120 (2011). [2] L. Schmitz, D.M. Kriete, R. Wilcox, T.L. Rhodes et al., submitted to Nucl. Fusion. [3] Y.R. Martin ,T. Takizuka et al. 2008 J. Physics: Conf. Series 123 012033. [4] Mordijck S., Rhodes T.L., Zeng L., Doyle E.J., Schmitz L. et al. 2015 Plasma Phys. Control. Fusion 58 014003. [5] Rechester A.B. and Rosenbluth M. 1978 Phys. Rev. Lett. 40 38. [6] Kaganovich I. and Rozhansky V. 1998 Phys. Plasmas 5 3901. [7] Rozhansky V., Kaveeva E. and Tendler M. 2008 Nucl. Fusion 48 075003.

Funders	Funder number
DIII-D National Fusion Facility
DOE Office of Science user facility	DE-FG02-08ER54984, DE-FC02-04ER54698, DE-FG02-08ER 54999, DE-FG02-89ER53296
Office of Fusion Energy Sciences
U.S. Department of Energy
Office of Science

UN SDGs

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

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Schmitz, L., Kriete, D. M., Wilcox, R. S., Rhodes, T. L., Zeng, L., Yan, Z., McKee, G. R., Evans, T. E., Paz-Soldan, C., Haskey, S. R., Grierson, B. A., Gohil, P., Lyons, B., Petty, C. C., & Orlov, D. (2019). Edge stochastization and collisionality dependence of the L-H power threshold with applied N=3 resonant magnetic perturbations. Paper presented at 46th European Physical Society Conference on Plasma Physics, EPS 2019, Milan, Italy.

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title = "Edge stochastization and collisionality dependence of the L-H power threshold with applied N=3 resonant magnetic perturbations",

abstract = "The stochastic edge magnetic field topology with applied resonant magnetic perturbations can explain the increased L-H power threshold [1,2] with applied n=3 resonant magnetic perturbations (RMP) in low rotation, ITER-similar-shape (ISS) plasmas in DIII-D. At low, ITER-relevant edge collisionality, the L-H power threshold is increased by a factor of almost three with respect to the Martin scaling. In this paper, reduced L-mode E×B shear with applied RMP is established as the likely cause of the increased L-H transition power threshold.",

author = "L. Schmitz and Kriete, {D. M.} and Wilcox, {R. S.} and Rhodes, {T. L.} and L. Zeng and Z. Yan and McKee, {G. R.} and Evans, {T. E.} and C. Paz-Soldan and Haskey, {S. R.} and Grierson, {B. A.} and P. Gohil and B. Lyons and Petty, {C. C.} and D. Orlov",

year = "2019",

language = "English",

}

Schmitz, L, Kriete, DM, Wilcox, RS, Rhodes, TL, Zeng, L, Yan, Z, McKee, GR, Evans, TE, Paz-Soldan, C, Haskey, SR, Grierson, BA, Gohil, P, Lyons, B, Petty, CC & Orlov, D 2019, 'Edge stochastization and collisionality dependence of the L-H power threshold with applied N=3 resonant magnetic perturbations', Paper presented at 46th European Physical Society Conference on Plasma Physics, EPS 2019, Milan, Italy, 07/8/19 - 07/12/19.

TY - CONF

T1 - Edge stochastization and collisionality dependence of the L-H power threshold with applied N=3 resonant magnetic perturbations

AU - Schmitz, L.

AU - Kriete, D. M.

AU - Wilcox, R. S.

AU - Rhodes, T. L.

AU - Zeng, L.

AU - Yan, Z.

AU - McKee, G. R.

AU - Evans, T. E.

AU - Paz-Soldan, C.

AU - Haskey, S. R.

AU - Grierson, B. A.

AU - Gohil, P.

AU - Lyons, B.

AU - Petty, C. C.

AU - Orlov, D.

PY - 2019

Y1 - 2019

N2 - The stochastic edge magnetic field topology with applied resonant magnetic perturbations can explain the increased L-H power threshold [1,2] with applied n=3 resonant magnetic perturbations (RMP) in low rotation, ITER-similar-shape (ISS) plasmas in DIII-D. At low, ITER-relevant edge collisionality, the L-H power threshold is increased by a factor of almost three with respect to the Martin scaling. In this paper, reduced L-mode E×B shear with applied RMP is established as the likely cause of the increased L-H transition power threshold.

AB - The stochastic edge magnetic field topology with applied resonant magnetic perturbations can explain the increased L-H power threshold [1,2] with applied n=3 resonant magnetic perturbations (RMP) in low rotation, ITER-similar-shape (ISS) plasmas in DIII-D. At low, ITER-relevant edge collisionality, the L-H power threshold is increased by a factor of almost three with respect to the Martin scaling. In this paper, reduced L-mode E×B shear with applied RMP is established as the likely cause of the increased L-H transition power threshold.

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M3 - Paper

AN - SCOPUS:85084022764

T2 - 46th European Physical Society Conference on Plasma Physics, EPS 2019

Y2 - 8 July 2019 through 12 July 2019

ER -

Edge stochastization and collisionality dependence of the L-H power threshold with applied N=3 resonant magnetic perturbations

Abstract

Conference

Funding

UN SDGs

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