Impact of divertor plasma parameters on characteristics of current-convective turbulence under DIII-D-like detached conditions

Stepanenko, A. A.; Wang, H. Q.; Krasheninnikov, S. I.

doi:10.1063/1.5123388

Title: Impact of divertor plasma parameters on characteristics of current-convective turbulence under DIII-D-like detached conditions

Journal Article · Sun Dec 01 00:00:00 EST 2019 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5123388· OSTI ID:1799654

^[1]; Wang, H. Q. ^[2]; Krasheninnikov, S. I. ^[3]

National Research Nuclear University, Moscow (Russia). Moscow Engineering Physics Institute (MEPhI)
General Atomics, San Diego, CA (United States)
Univ. of California, San Diego, CA (United States)

Recent observations of turbulence in plasma of a DIII-D inner divertor revealed the formation of poloidally localized fluctuations with frequencies in the low-kilohertz range, when the machine was operating in the fluctuating state of detachment. This phenomenon can be related to the onset of the current-convective instability (CCI). In this contribution, we use the basic physical model of the instability to simulate the saturated current-convective turbulence under the DIII-D-like detached conditions. Parameter scans of turbulence characteristics are performed. The spatial and temporal spectra of fluctuations are obtained and compared with the available experimental data. It is demonstrated that simulations are able to qualitatively reproduce most of the distinct features of turbulence found in the experiments, indicating that the CCI can be a plausible mechanism responsible for plasma activity recently observed in DIII-D.

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Research Organization:: General Atomics, San Diego, CA (United States); Univ. of California, San Diego, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: FC02-04ER54698; FG02-04ER54739; FG02-04ER54739 at UCSD

OSTI ID:: 1799654

Alternate ID(s):: OSTI ID: 1577396

Journal Information:: Physics of Plasmas, Vol. 26, Issue 12; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 4 works

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References (26)

Plasma detachment in JET Mark I divertor experiments Loarte, A.; Monk, R. D.; Martín-Solís, J. R. Nuclear Fusion, Vol. 38, Issue 3 https://doi.org/10.1088/0029-5515/38/3/303	journal	March 1998
Divertor plasma detachment Krasheninnikov, S. I.; Kukushkin, A. S.; Pshenov, A. A. Physics of Plasmas, Vol. 23, Issue 5 https://doi.org/10.1063/1.4948273	journal	May 2016
Visualization of Intermittent Blobby Plasma Transport in Attached and Detached Plasmas of the NAGDIS-II Ohno, Noriyasu; Furuta, Katsuhiro; Takamura, Shuichi Journal of Plasma and Fusion Research, Vol. 80, Issue 4 https://doi.org/10.1585/jspf.80.275	journal	January 2004
On detachment asymmetry and stability Pshenov, A. A.; Kukushkin, A. S.; Krasheninnikov, S. I. Physics of Plasmas, Vol. 24, Issue 7 https://doi.org/10.1063/1.4991402	journal	July 2017
Spatial–Temporal Properties of Current-Convective Turbulence in Divertor Plasma under DIII-D-Like Detached Conditions Stepanenko, A. A.; Wang, H. Q. Plasma Physics Reports, Vol. 45, Issue 7 https://doi.org/10.1134/S1063780X19070110	journal	July 2019
BOUT++: A framework for parallel plasma fluid simulations Dudson, B. D.; Umansky, M. V.; Xu, X. Q. Computer Physics Communications, Vol. 180, Issue 9 https://doi.org/10.1016/j.cpc.2009.03.008	journal	September 2009
Plasma detachment in divertor tokamaks Leonard, A. W. Plasma Physics and Controlled Fusion, Vol. 60, Issue 4 https://doi.org/10.1088/1361-6587/aaa7a9	journal	February 2018
A new experimental classification of divertor detachment in ASDEX Upgrade Potzel, S.; Wischmeier, M.; Bernert, M. Nuclear Fusion, Vol. 54, Issue 1 https://doi.org/10.1088/0029-5515/54/1/013001	journal	November 2013
Edge turbulence and divertor heat flux width simulations of Alcator C-Mod discharges using an electromagnetic two-fluid model Chen, B.; Xu, X. Q.; Xia, T. Y. Nuclear Fusion, Vol. 57, Issue 11 https://doi.org/10.1088/1741-4326/aa7d46	journal	August 2017
Impurity-induced divertor plasma oscillations Smirnov, R. D.; Kukushkin, A. S.; Krasheninnikov, S. I. Physics of Plasmas, Vol. 23, Issue 1 https://doi.org/10.1063/1.4939539	journal	January 2016
3D Fluid Simulations of Turbulence in Detached Scrape-off-Layer Plasmas Xu, X. Q.; Cohen, R. H. Contributions to Plasma Physics, Vol. 36, Issue 2-3 https://doi.org/10.1002/ctpp.2150360220	journal	January 1996
Two-dimensional effects in plasma radiation fronts and radiation front jumps in tokamak divertor plasmas Krasheninnikov, S. I. Physics of Plasmas, Vol. 4, Issue 11 https://doi.org/10.1063/1.872539	journal	November 1997
High Mach flow associated with X point MARFE and plasma detachment Hatayama, A.; Segawa, H.; Schneider, R. Nuclear Fusion, Vol. 40, Issue 12 https://doi.org/10.1088/0029-5515/40/12/305	journal	December 2000
Characterization of fluctuations in the JET Divertor plasmas with Langmuir probes García-Cortés, I.; Hidalgo, C.; n-Solís, J. R. Martí Plasma Physics and Controlled Fusion, Vol. 38, Issue 12 https://doi.org/10.1088/0741-3335/38/12/002	journal	December 1996
Thermal front analysis of detached divertors and MARFEs Hutchinson, I. H. Nuclear Fusion, Vol. 34, Issue 10 https://doi.org/10.1088/0029-5515/34/10/I04	journal	October 1994
Bifurcations and oscillations in divertor plasma Kukushkin, A. S.; Krasheninnikov, S. I. Plasma Physics and Controlled Fusion, Vol. 61, Issue 7 https://doi.org/10.1088/1361-6587/ab1bba	journal	May 2019
A full tungsten divertor for ITER: Physics issues and design status Pitts, R. A.; Carpentier, S.; Escourbiac, F. Journal of Nuclear Materials, Vol. 438 https://doi.org/10.1016/j.jnucmat.2013.01.008	journal	July 2013
Fluid simulations of tokamak turbulence in quasiballooning coordinates Dimits, A. M. Physical Review E, Vol. 48, Issue 5 https://doi.org/10.1103/PhysRevE.48.4070	journal	November 1993
Stability of the detachment front in a tokamak divertor Krasheninnikov, S. I.; Rensink, M.; Rognlien, T. D. Journal of Nuclear Materials, Vol. 266-269 https://doi.org/10.1016/S0022-3115(98)00577-7	journal	March 1999
A review of direct experimental measurements of detachment Boedo, J.; McLean, A. G.; Rudakov, D. L. Plasma Physics and Controlled Fusion, Vol. 60, Issue 4 https://doi.org/10.1088/1361-6587/aaa2ec	journal	February 2018
Numerical study of the current-convective instability driven by asymmetry of detachment in inner and outer divertors Stepanenko, A. A.; Krasheninnikov, S. I. Physics of Plasmas, Vol. 25, Issue 1 https://doi.org/10.1063/1.5010932	journal	January 2018
Low-to-high confinement transition simulations in divertor geometry Xu, X. Q.; Cohen, R. H.; Rognlien, T. D. Physics of Plasmas, Vol. 7, Issue 5 https://doi.org/10.1063/1.874044	journal	May 2000
Current convective instability in detached divertor plasma Krasheninnikov, S. I.; Smolyakov, A. I. Physics of Plasmas, Vol. 23, Issue 9 https://doi.org/10.1063/1.4962568	journal	September 2016
Recent progress on divertor operations in EAST Guo, H. Y.; Gao, X.; Li, J. Journal of Nuclear Materials, Vol. 415, Issue 1 https://doi.org/10.1016/j.jnucmat.2010.11.048	journal	August 2011
The role of turbulent transport in DIII-D edge and divertor plasmas Moyer, R. A.; Cuthbertson, J. W.; Evans, T. E. Journal of Nuclear Materials, Vol. 241-243 https://doi.org/10.1016/S0022-3115(97)80113-4	journal	February 1997
SUNDIALS: Suite of nonlinear and differential/algebraic equation solvers Hindmarsh, Alan C.; Brown, Peter N.; Grant, Keith E. ACM Transactions on Mathematical Software, Vol. 31, Issue 3 https://doi.org/10.1145/1089014.1089020	journal	September 2005

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Enhanced particle flux due to localized divertor MHD instability in DIII-D tokamak Wang, H. Q.; Watkins, J. G.; Guo, H. Y. Physics of Plasmas, Vol. 27, Issue 2 https://doi.org/10.1063/1.5140354	journal	February 2020

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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current-convective turbulence
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