Tungsten dust impact on ITER-like plasma edge
Abstract
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.
- Authors:
-
- Univ. of California San Diego, La Jolla, CA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1274048
- Alternate Identifier(s):
- OSTI ID: 1228486
- Report Number(s):
- LLNL-JRNL-678548
Journal ID: ISSN 1070-664X; PHPAEN
- Grant/Contract Number:
- AC52-07NA27344; FG02-06ER54852
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 22; Journal Issue: 1; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION; tungsten; plasma impurities; divertors; plasma temperature; plasma transport properties
Citation Formats
Smirnov, R. D., Krasheninnikov, S. I., Pigarov, A. Yu., and Rognlien, T. D. Tungsten dust impact on ITER-like plasma edge. United States: N. p., 2015.
Web. doi:10.1063/1.4905704.
Smirnov, R. D., Krasheninnikov, S. I., Pigarov, A. Yu., & Rognlien, T. D. Tungsten dust impact on ITER-like plasma edge. United States. https://doi.org/10.1063/1.4905704
Smirnov, R. D., Krasheninnikov, S. I., Pigarov, A. Yu., and Rognlien, T. D. 2015.
"Tungsten dust impact on ITER-like plasma edge". United States. https://doi.org/10.1063/1.4905704. https://www.osti.gov/servlets/purl/1274048.
@article{osti_1274048,
title = {Tungsten dust impact on ITER-like plasma edge},
author = {Smirnov, R. D. and Krasheninnikov, S. I. and Pigarov, A. Yu. and Rognlien, T. D.},
abstractNote = {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.},
doi = {10.1063/1.4905704},
url = {https://www.osti.gov/biblio/1274048},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 1,
volume = 22,
place = {United States},
year = {Mon Jan 12 00:00:00 EST 2015},
month = {Mon Jan 12 00:00:00 EST 2015}
}
Web of Science
Works referenced in this record:
Impurity Seeding with Dust Injection in Tokamak Edge Plasmas
journal, June 2012
- Smirnov, R. D.; Krasheninnikov, S. I.; Pigarov, A. Yu.
- Contributions to Plasma Physics, Vol. 52, Issue 5-6
Steady-state radiative cooling rates for low-density, high-temperature plasmas
journal, November 1977
- Post, D. E.; Jensen, R. V.; Tarter, C. B.
- Atomic Data and Nuclear Data Tables, Vol. 20, Issue 5
On vapor shielding of dust grains of iron, molybdenum, and tungsten in fusion plasmas
journal, February 2014
- Brown, B. T.; Smirnov, R. D.; Krasheninnikov, S. I.
- Physics of Plasmas, Vol. 21, Issue 2
Transient impurity events in JET with the new ITER-like wall
journal, April 2014
- Sertoli, M.; Flannegan, J. C.; Cackett, A.
- Physica Scripta, Vol. T159
Analysis of performance of the optimized divertor in ITER
journal, May 2009
- Kukushkin, A. S.; Pacher, H. D.; Loarte, A.
- Nuclear Fusion, Vol. 49, Issue 7
Calculation and experimental test of the cooling factor of tungsten
journal, January 2010
- Pütterich, T.; Neu, R.; Dux, R.
- Nuclear Fusion, Vol. 50, Issue 2
Recent analysis of key plasma wall interactions issues for ITER
journal, June 2009
- Roth, Joachim; Tsitrone, E.; Loarte, A.
- Journal of Nuclear Materials, Vol. 390-391
Dust generation mechanisms under powerful plasma impacts to the tungsten surfaces in ITER ELM simulation experiments
journal, July 2013
- Makhlaj, V. A.; Garkusha, I. E.; Aksenov, N. N.
- Journal of Nuclear Materials, Vol. 438
On interaction of large dust grains with fusion plasma
journal, November 2009
- Krasheninnikov, S. I.; Smirnov, R. D.
- Physics of Plasmas, Vol. 16, Issue 11
On ablation of large Tungsten dust grains in edge plasma of fusion devices
journal, August 2015
- Krasheninnikov, S. I.; Marenkov, E. D.
- Journal of Nuclear Materials, Vol. 463
Estimation of the dust production rate from the tungsten armour after repetitive ELM-like heat loads
journal, December 2011
- Pestchanyi, S.; Garkusha, I.; Makhlaj, V.
- Physica Scripta, Vol. T145
Formation of Nanostructured Tungsten with Arborescent Shape due to Helium Plasma Irradiation
journal, January 2006
- Takamura, Shuichi; Ohno, Noriyasu; Nishijima, Dai
- Plasma and Fusion Research, Vol. 1
Measurement of number density and size distribution of dust in DIII-D during normal plasma operation
journal, October 2006
- West, W. P.; Bray, B. D.; Burkart, J.
- Plasma Physics and Controlled Fusion, Vol. 48, Issue 11
Divertor tungsten tile melting and its effect on core plasma performance
journal, October 2012
- Lipschultz, B.; Coenen, J. W.; Barnard, H. S.
- Nuclear Fusion, Vol. 52, Issue 12
3D measurements of mobile dust particle trajectories in NSTX
journal, June 2007
- Roquemore, A. L.; Nishino, N.; Skinner, C. H.
- Journal of Nuclear Materials, Vol. 363-365
Modelling of dynamics and transport of carbon dust particles in tokamaks
journal, February 2007
- Smirnov, R. D.; Pigarov, A. Yu; Rosenberg, M.
- Plasma Physics and Controlled Fusion, Vol. 49, Issue 4
Controlled tungsten melting and droplet ejection studies in ASDEX Upgrade
journal, December 2011
- Krieger, K.; Lunt, T.; Dux, R.
- Physica Scripta, Vol. T145
Dust in magnetic confinement fusion devices and its impact on plasma operation
journal, March 1999
- Winter, J.; Gebauer, G.
- Journal of Nuclear Materials, Vol. 266-269
Dust in magnetic fusion devices
journal, May 2011
- Krasheninnikov, S. I.; Smirnov, R. D.; Rudakov, D. L.
- Plasma Physics and Controlled Fusion, Vol. 53, Issue 8
Analysis of tungsten melt-layer motion and splashing under tokamak conditions at TEXTOR
journal, July 2011
- Coenen, J. W.; Philipps, V.; Brezinsek, S.
- Nuclear Fusion, Vol. 51, Issue 8
Research status and issues of tungsten plasma facing materials for ITER and beyond
journal, October 2014
- Ueda, Y.; Coenen, J. W.; De Temmerman, G.
- Fusion Engineering and Design, Vol. 89, Issue 7-8
Simulation of Detachment in ITER-Geometry Using the UEDGE Code and a Fluid Neutral Model
journal, January 1996
- Wising, F.; Knoll, D. A.; Krasheninnikov, S. I.
- Contributions to Plasma Physics, Vol. 36, Issue 2-3
3-D reconstruction of pre-characterized lithium and tungsten dust particle trajectories in NSTX
journal, August 2011
- Nichols, J.; Roquemore, A. L.; Davis, W.
- Journal of Nuclear Materials, Vol. 415, Issue 1
A full tungsten divertor for ITER: Physics issues and design status
journal, July 2013
- Pitts, R. A.; Carpentier, S.; Escourbiac, F.
- Journal of Nuclear Materials, Vol. 438
A Comparison of Neutral Gas Models for Divertor Plasmas
journal, January 1998
- Rensink, M. E.; Lodestro, L.; Porter, G. D.
- Contributions to Plasma Physics, Vol. 38, Issue 1-2
Performance of different tungsten grades under transient thermal loads
journal, June 2011
- Linke, J.; Loewenhoff, T.; Massaut, V.
- Nuclear Fusion, Vol. 51, Issue 7
Key ITER plasma edge and plasma–material interaction issues
journal, March 2003
- Federici, G.; Andrew, P.; Barabaschi, P.
- Journal of Nuclear Materials, Vol. 313-316
Observation of dust particles by a laser scattering method in the JIPPT-IIU tokamak
journal, August 1997
- Narihara, K.; Toi, K.; Hamada, Y.
- Nuclear Fusion, Vol. 37, Issue 8
Modeling of dust impact on tokamak edge plasmas
journal, August 2011
- Smirnov, R. D.; Krasheninnikov, S. I.; Pigarov, A. Yu.
- Journal of Nuclear Materials, Vol. 415, Issue 1
Dust-particle transport in tokamak edge plasmas
journal, December 2005
- Pigarov, A. Yu.; Krasheninnikov, S. I.; Soboleva, T. K.
- Physics of Plasmas, Vol. 12, Issue 12
Behavior of tungsten exposed to high fluences of low energy hydrogen isotopes
journal, March 2001
- Venhaus, T.; Causey, R.; Doerner, R.
- Journal of Nuclear Materials, Vol. 290-293
Scaling laws for edge plasma parameters in ITER from two-dimensional edge modelling
journal, August 2003
- Kukushkin, A. S.; Pacher, H. D.; Pacher, G. W.
- Nuclear Fusion, Vol. 43, Issue 8
Dust studies in DIII-D and TEXTOR
journal, July 2009
- Rudakov, D. L.; Litnovsky, A.; West, W. P.
- Nuclear Fusion, Vol. 49, Issue 8
Video tracking and post-mortem analysis of dust particles from all tungsten ASDEX Upgrade
journal, August 2011
- Endstrasser, N.; Brochard, F.; Rohde, V.
- Journal of Nuclear Materials, Vol. 415, Issue 1
A review of dust in fusion devices: Implications for safety and operational performance
journal, December 2002
- Sharpe, J. P.; Petti, D. A.; Bartels, H. -W
- Fusion Engineering and Design, Vol. 63-64
Marfes: Radiative condensation in tokamak edge plasma
journal, January 1987
- Drake, J. F.
- Physics of Fluids, Vol. 30, Issue 8
A fully implicit, time dependent 2-D fluid code for modeling tokamak edge plasmas
journal, December 1992
- Rognlien, T. D.; Milovich, J. L.; Rensink, M. E.
- Journal of Nuclear Materials, Vol. 196-198
Works referencing / citing this record:
Experimental and modeling study of chemical-based strategies for mitigating dust formation in fusion reactors
journal, February 2019
- Koroglu, Batikan; Mehl, Marco; Crowhurst, Jonathan C.
- Plasma Physics and Controlled Fusion, Vol. 61, Issue 4
Survival and in-vessel redistribution of beryllium droplets after ITER disruptions
journal, May 2018
- Vignitchouk, L.; Ratynskaia, S.; Tolias, P.
- Nuclear Fusion, Vol. 58, Issue 7
Pre-plasma remobilization of ferromagnetic dust in FTU and possible interference with tokamak operations
journal, September 2019
- De Angeli, M.; Lazzaro, E.; Tolias, P.
- Nuclear Fusion, Vol. 59, Issue 10