Tungsten dust impact on ITER-like plasma edge

Smirnov, R. D.; Krasheninnikov, S. I.; Pigarov, A. Yu.; Rognlien, T. D.

doi:10.1063/1.4905704

Title: Tungsten dust impact on ITER-like plasma edge

Journal Article · Mon Jan 12 00:00:00 EST 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4905704· OSTI ID:1274048

Smirnov, R. D. ^[1]; Krasheninnikov, S. I. ^[1]; Pigarov, A. Yu. ^[1]; Rognlien, T. D. ^[2]

Univ. of California San Diego, La Jolla, CA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

The impact of tungsten dust originating from divertor plates on the performance of edge plasma in ITER-like discharge is evaluated using computer modeling with the coupled dust-plasma transport code DUSTT-UEDGE. Different dust injection parameters, including dust size and mass injection rates, are surveyed. It is found that tungsten dust injection with rates as low as a few mg/s can lead to dangerously high tungsten impurity concentrations in the plasma core. Dust injections with rates of a few tens of mg/s are shown to have a significant effect on edge plasma parameters and dynamics in ITER scale tokamaks. The large impact of certain phenomena, such as dust shielding by an ablation cloud and the thermal force on tungsten ions, on dust/impurity transport in edge plasma and consequently on core tungsten contamination level is demonstrated. Lastly, it is also found that high-Z impurities provided by dust can induce macroscopic self-sustained plasma oscillations in plasma edge leading to large temporal variations of edge plasma parameters and heat load to divertor target plates.

View Accepted Manuscript (DOE)

View Accepted Manuscript (Publisher)

Cite

Export

Save

Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344; FG02-06ER54852

OSTI ID:: 1274048

Alternate ID(s):: OSTI ID: 1228486

Report Number(s):: LLNL-JRNL-678548; PHPAEN

Journal Information:: Physics of Plasmas, Vol. 22, Issue 1; ISSN 1070-664X

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

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 25 works

Citation information provided by
Web of Science

References (37)

Impurity Seeding with Dust Injection in Tokamak Edge Plasmas Smirnov, R. D.; Krasheninnikov, S. I.; Pigarov, A. Yu. Contributions to Plasma Physics, Vol. 52, Issue 5-6 https://doi.org/10.1002/ctpp.201210029	journal	June 2012
Steady-state radiative cooling rates for low-density, high-temperature plasmas Post, D. E.; Jensen, R. V.; Tarter, C. B. Atomic Data and Nuclear Data Tables, Vol. 20, Issue 5 https://doi.org/10.1016/0092-640X(77)90026-2	journal	November 1977
On vapor shielding of dust grains of iron, molybdenum, and tungsten in fusion plasmas Brown, B. T.; Smirnov, R. D.; Krasheninnikov, S. I. Physics of Plasmas, Vol. 21, Issue 2 https://doi.org/10.1063/1.4866599	journal	February 2014
Transient impurity events in JET with the new ITER-like wall Sertoli, M.; Flannegan, J. C.; Cackett, A. Physica Scripta, Vol. T159 https://doi.org/10.1088/0031-8949/2014/T159/014014	journal	April 2014
Analysis of performance of the optimized divertor in ITER Kukushkin, A. S.; Pacher, H. D.; Loarte, A. Nuclear Fusion, Vol. 49, Issue 7 https://doi.org/10.1088/0029-5515/49/7/075008	journal	May 2009
Calculation and experimental test of the cooling factor of tungsten Pütterich, T.; Neu, R.; Dux, R. Nuclear Fusion, Vol. 50, Issue 2 https://doi.org/10.1088/0029-5515/50/2/025012	journal	January 2010
Recent analysis of key plasma wall interactions issues for ITER Roth, Joachim; Tsitrone, E.; Loarte, A. Journal of Nuclear Materials, Vol. 390-391 https://doi.org/10.1016/j.jnucmat.2009.01.037	journal	June 2009
Dust generation mechanisms under powerful plasma impacts to the tungsten surfaces in ITER ELM simulation experiments Makhlaj, V. A.; Garkusha, I. E.; Aksenov, N. N. Journal of Nuclear Materials, Vol. 438 https://doi.org/10.1016/j.jnucmat.2013.01.034	journal	July 2013
On interaction of large dust grains with fusion plasma Krasheninnikov, S. I.; Smirnov, R. D. Physics of Plasmas, Vol. 16, Issue 11 https://doi.org/10.1063/1.3262505	journal	November 2009
On ablation of large Tungsten dust grains in edge plasma of fusion devices Krasheninnikov, S. I.; Marenkov, E. D. Journal of Nuclear Materials, Vol. 463 https://doi.org/10.1016/j.jnucmat.2014.10.077	journal	August 2015
Estimation of the dust production rate from the tungsten armour after repetitive ELM-like heat loads Pestchanyi, S.; Garkusha, I.; Makhlaj, V. Physica Scripta, Vol. T145 https://doi.org/10.1088/0031-8949/2011/T145/014062	journal	December 2011
Formation of Nanostructured Tungsten with Arborescent Shape due to Helium Plasma Irradiation Takamura, Shuichi; Ohno, Noriyasu; Nishijima, Dai Plasma and Fusion Research, Vol. 1 https://doi.org/10.1585/pfr.1.051	journal	January 2006
Measurement of number density and size distribution of dust in DIII-D during normal plasma operation West, W. P.; Bray, B. D.; Burkart, J. Plasma Physics and Controlled Fusion, Vol. 48, Issue 11 https://doi.org/10.1088/0741-3335/48/11/007	journal	October 2006
Divertor tungsten tile melting and its effect on core plasma performance Lipschultz, B.; Coenen, J. W.; Barnard, H. S. Nuclear Fusion, Vol. 52, Issue 12 https://doi.org/10.1088/0029-5515/52/12/123002	journal	October 2012
3D measurements of mobile dust particle trajectories in NSTX Roquemore, A. L.; Nishino, N.; Skinner, C. H. Journal of Nuclear Materials, Vol. 363-365 https://doi.org/10.1016/j.jnucmat.2007.01.065	journal	June 2007
Modelling of dynamics and transport of carbon dust particles in tokamaks Smirnov, R. D.; Pigarov, A. Yu; Rosenberg, M. Plasma Physics and Controlled Fusion, Vol. 49, Issue 4 https://doi.org/10.1088/0741-3335/49/4/001	journal	February 2007
Controlled tungsten melting and droplet ejection studies in ASDEX Upgrade Krieger, K.; Lunt, T.; Dux, R. Physica Scripta, Vol. T145 https://doi.org/10.1088/0031-8949/2011/T145/014067	journal	December 2011
Dust in magnetic confinement fusion devices and its impact on plasma operation Winter, J.; Gebauer, G. Journal of Nuclear Materials, Vol. 266-269 https://doi.org/10.1016/S0022-3115(98)00526-1	journal	March 1999
Dust in magnetic fusion devices Krasheninnikov, S. I.; Smirnov, R. D.; Rudakov, D. L. Plasma Physics and Controlled Fusion, Vol. 53, Issue 8 https://doi.org/10.1088/0741-3335/53/8/083001	journal	May 2011
Analysis of tungsten melt-layer motion and splashing under tokamak conditions at TEXTOR Coenen, J. W.; Philipps, V.; Brezinsek, S. Nuclear Fusion, Vol. 51, Issue 8 https://doi.org/10.1088/0029-5515/51/8/083008	journal	July 2011
Research status and issues of tungsten plasma facing materials for ITER and beyond Ueda, Y.; Coenen, J. W.; De Temmerman, G. Fusion Engineering and Design, Vol. 89, Issue 7-8 https://doi.org/10.1016/j.fusengdes.2014.02.078	journal	October 2014
Simulation of Detachment in ITER-Geometry Using the UEDGE Code and a Fluid Neutral Model Wising, F.; Knoll, D. A.; Krasheninnikov, S. I. Contributions to Plasma Physics, Vol. 36, Issue 2-3 https://doi.org/10.1002/ctpp.2150360238	journal	January 1996
3-D reconstruction of pre-characterized lithium and tungsten dust particle trajectories in NSTX Nichols, J.; Roquemore, A. L.; Davis, W. Journal of Nuclear Materials, Vol. 415, Issue 1 https://doi.org/10.1016/j.jnucmat.2010.10.049	journal	August 2011
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
A Comparison of Neutral Gas Models for Divertor Plasmas Rensink, M. E.; Lodestro, L.; Porter, G. D. Contributions to Plasma Physics, Vol. 38, Issue 1-2 https://doi.org/10.1002/ctpp.2150380149	journal	January 1998
Performance of different tungsten grades under transient thermal loads Linke, J.; Loewenhoff, T.; Massaut, V. Nuclear Fusion, Vol. 51, Issue 7 https://doi.org/10.1088/0029-5515/51/7/073017	journal	June 2011
Key ITER plasma edge and plasma–material interaction issues Federici, G.; Andrew, P.; Barabaschi, P. Journal of Nuclear Materials, Vol. 313-316 https://doi.org/10.1016/S0022-3115(02)01327-2	journal	March 2003
Observation of dust particles by a laser scattering method in the JIPPT-IIU tokamak Narihara, K.; Toi, K.; Hamada, Y. Nuclear Fusion, Vol. 37, Issue 8 https://doi.org/10.1088/0029-5515/37/8/I12	journal	August 1997
Modeling of dust impact on tokamak edge plasmas Smirnov, R. D.; Krasheninnikov, S. I.; Pigarov, A. Yu. Journal of Nuclear Materials, Vol. 415, Issue 1 https://doi.org/10.1016/j.jnucmat.2011.01.004	journal	August 2011
Dust-particle transport in tokamak edge plasmas Pigarov, A. Yu.; Krasheninnikov, S. I.; Soboleva, T. K. Physics of Plasmas, Vol. 12, Issue 12 https://doi.org/10.1063/1.2145157	journal	December 2005
Behavior of tungsten exposed to high fluences of low energy hydrogen isotopes Venhaus, T.; Causey, R.; Doerner, R. Journal of Nuclear Materials, Vol. 290-293 https://doi.org/10.1016/S0022-3115(00)00443-8	journal	March 2001
Scaling laws for edge plasma parameters in ITER from two-dimensional edge modelling Kukushkin, A. S.; Pacher, H. D.; Pacher, G. W. Nuclear Fusion, Vol. 43, Issue 8 https://doi.org/10.1088/0029-5515/43/8/312	journal	August 2003
Dust studies in DIII-D and TEXTOR Rudakov, D. L.; Litnovsky, A.; West, W. P. Nuclear Fusion, Vol. 49, Issue 8 https://doi.org/10.1088/0029-5515/49/8/085022	journal	July 2009
Video tracking and post-mortem analysis of dust particles from all tungsten ASDEX Upgrade Endstrasser, N.; Brochard, F.; Rohde, V. Journal of Nuclear Materials, Vol. 415, Issue 1 https://doi.org/10.1016/j.jnucmat.2010.07.045	journal	August 2011
A review of dust in fusion devices: Implications for safety and operational performance Sharpe, J. P.; Petti, D. A.; Bartels, H. -W Fusion Engineering and Design, Vol. 63-64 https://doi.org/10.1016/S0920-3796(02)00191-6	journal	December 2002
Marfes: Radiative condensation in tokamak edge plasma Drake, J. F. Physics of Fluids, Vol. 30, Issue 8 https://doi.org/10.1063/1.866133	journal	January 1987
A fully implicit, time dependent 2-D fluid code for modeling tokamak edge plasmas Rognlien, T. D.; Milovich, J. L.; Rensink, M. E. Journal of Nuclear Materials, Vol. 196-198 https://doi.org/10.1016/S0022-3115(06)80058-9	journal	December 1992

Cited By (3)

Experimental and modeling study of chemical-based strategies for mitigating dust formation in fusion reactors Koroglu, Batikan; Mehl, Marco; Crowhurst, Jonathan C. Plasma Physics and Controlled Fusion, Vol. 61, Issue 4 https://doi.org/10.1088/1361-6587/aaffe3	journal	February 2019
Survival and in-vessel redistribution of beryllium droplets after ITER disruptions Vignitchouk, L.; Ratynskaia, S.; Tolias, P. Nuclear Fusion, Vol. 58, Issue 7 https://doi.org/10.1088/1741-4326/aabeec	journal	May 2018
Pre-plasma remobilization of ferromagnetic dust in FTU and possible interference with tokamak operations De Angeli, M.; Lazzaro, E.; Tolias, P. Nuclear Fusion, Vol. 59, Issue 10 https://doi.org/10.1088/1741-4326/ab369f	journal	September 2019

Similar Records

Tungsten dust impact on ITER-like plasma edge

Journal Article · Thu Jan 15 00:00:00 EST 2015 · Physics of Plasmas · OSTI ID:1274048

Krasheninnikov, S. I.; Pigarov, A. Yu.; Rognlien, T. D.

Time-dependent modeling of dust outburst into tokamak divertor plasma

Journal Article · Thu Aug 27 00:00:00 EDT 2020 · Physics of Plasmas · OSTI ID:1274048

Smirnov, R. D.; Krasheninnikov, S. I.

Plasma Interactions with Mixed Materials and Impurity Transport

Technical Report · Fri Oct 28 00:00:00 EDT 2016 · OSTI ID:1274048

Rognlien, T. D.; Beiersdorfer, Peter; Chernov, A.; +4 more

Related Subjects

70 PLASMA PHYSICS AND FUSION
tungsten
plasma impurities
divertors
plasma temperature
plasma transport properties

Title: Tungsten dust impact on ITER-like plasma edge

Citation Formats

References (37)

Cited By (3)

Similar Records

Related Subjects