Tungsten impurity transport experiments in Alcator C-Mod to address high priority research and development for ITER
Abstract
Experiments in Alcator C-Mod tokamak plasmas in the Enhanced D-alpha H-mode regime with ITER-like mid-radius plasma density peaking and Ion Cyclotron Resonant heating, in which tungsten is introduced by the laser blow-off technique, have shown that accumulation of tungsten in the central region of the plasma does not take place in these conditions. The measurements obtained are consistent with anomalous transport dominating tungsten transport except in the central region of the plasma where tungsten transport is neoclassical, as previously observed in other devices with dominant neutral beam injection heating, such as JET and ASDEX Upgrade. In contrast to such results, yet, the measured scale lengths for plasma temperature and density in the central region of these Alcator C-Mod plasmas, with density profiles relatively flat in the core region due to the lack of core fuelling, are favourable to prevent inter and intra sawtooth tungsten accumulation in this region under dominance of neoclassical transport. Simulations of ITER H-mode plasmas, including both anomalous (modelled by the Gyro-Landau-Fluid code GLF23) and neoclassical transport for main ions and tungsten and with density profiles of similar peaking to those obtained in Alcator C-Mod show that accumulation of tungsten in the central plasma region is alsomore »
- Authors:
-
- ITER Organization, St. Paul Lez Durance (France)
- Univ. of York (United Kingdom)
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Technische Univ. Wien, Vienna (Austria)
- Max Planck Inst. fur Extraterrestrische Physik, Garching (Germany)
- NRC “Kurchatov Institute,” Kurchatov Square 1, 123098 Moscow, Russia
- Publication Date:
- Research Org.:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- Contributing Org.:
- Alcator C-Mod Team
- OSTI Identifier:
- 1547008
- Alternate Identifier(s):
- OSTI ID: 1228153
- Grant/Contract Number:
- FC02-99ER54512
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 22; Journal Issue: 5; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Loarte, A., Reinke, M. L., Polevoi, A. R., Hosokawa, M., Chilenski, M., Howard, N., Hubbard, A., Hughes, J. W., Rice, J. E., Walk, J., Köchl, F., Pütterich, T., Dux, R., and Zhogolev, V. E. Tungsten impurity transport experiments in Alcator C-Mod to address high priority research and development for ITER. United States: N. p., 2015.
Web. doi:10.1063/1.4921253.
Loarte, A., Reinke, M. L., Polevoi, A. R., Hosokawa, M., Chilenski, M., Howard, N., Hubbard, A., Hughes, J. W., Rice, J. E., Walk, J., Köchl, F., Pütterich, T., Dux, R., & Zhogolev, V. E. Tungsten impurity transport experiments in Alcator C-Mod to address high priority research and development for ITER. United States. https://doi.org/10.1063/1.4921253
Loarte, A., Reinke, M. L., Polevoi, A. R., Hosokawa, M., Chilenski, M., Howard, N., Hubbard, A., Hughes, J. W., Rice, J. E., Walk, J., Köchl, F., Pütterich, T., Dux, R., and Zhogolev, V. E. Wed .
"Tungsten impurity transport experiments in Alcator C-Mod to address high priority research and development for ITER". United States. https://doi.org/10.1063/1.4921253. https://www.osti.gov/servlets/purl/1547008.
@article{osti_1547008,
title = {Tungsten impurity transport experiments in Alcator C-Mod to address high priority research and development for ITER},
author = {Loarte, A. and Reinke, M. L. and Polevoi, A. R. and Hosokawa, M. and Chilenski, M. and Howard, N. and Hubbard, A. and Hughes, J. W. and Rice, J. E. and Walk, J. and Köchl, F. and Pütterich, T. and Dux, R. and Zhogolev, V. E.},
abstractNote = {Experiments in Alcator C-Mod tokamak plasmas in the Enhanced D-alpha H-mode regime with ITER-like mid-radius plasma density peaking and Ion Cyclotron Resonant heating, in which tungsten is introduced by the laser blow-off technique, have shown that accumulation of tungsten in the central region of the plasma does not take place in these conditions. The measurements obtained are consistent with anomalous transport dominating tungsten transport except in the central region of the plasma where tungsten transport is neoclassical, as previously observed in other devices with dominant neutral beam injection heating, such as JET and ASDEX Upgrade. In contrast to such results, yet, the measured scale lengths for plasma temperature and density in the central region of these Alcator C-Mod plasmas, with density profiles relatively flat in the core region due to the lack of core fuelling, are favourable to prevent inter and intra sawtooth tungsten accumulation in this region under dominance of neoclassical transport. Simulations of ITER H-mode plasmas, including both anomalous (modelled by the Gyro-Landau-Fluid code GLF23) and neoclassical transport for main ions and tungsten and with density profiles of similar peaking to those obtained in Alcator C-Mod show that accumulation of tungsten in the central plasma region is also unlikely to occur in stationary ITER H-mode plasmas due to the low fuelling source by the neutral beam injection (injection energy ~ 1 MeV), which is in consistent agreement with findings in the Alcator C-Mod experiments.},
doi = {10.1063/1.4921253},
journal = {Physics of Plasmas},
number = 5,
volume = 22,
place = {United States},
year = {Wed May 27 00:00:00 EDT 2015},
month = {Wed May 27 00:00:00 EDT 2015}
}
Free Publicly Available Full Text
Publisher's Version of Record
Other availability
Search WorldCat to find libraries that may hold this journal
Cited by: 27 works
Citation information provided by
Web of Science
Web of Science
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Simulation of high- Z impurity behaviour for ITER operational scenarios using the ZIMPUR impurity code
journal, May 2005
- Leonov, V. M.; Zhogolev, V. E.
- Plasma Physics and Controlled Fusion, Vol. 47, Issue 6
Self-consistent simulation of plasma scenarios for ITER using a combination of 1.5D transport codes and free-boundary equilibrium codes
journal, September 2013
- Parail, V.; Albanese, R.; Ambrosino, R.
- Nuclear Fusion, Vol. 53, Issue 11
Neoclassical transport of heavy impurities with poloidally asymmetric density distribution in tokamaks
journal, November 2014
- Angioni, C.; Helander, P.
- Plasma Physics and Controlled Fusion, Vol. 56, Issue 12
First results from Alcator‐C‐MOD*
journal, May 1994
- Hutchinson, I. H.; Boivin, R.; Bombarda, F.
- Physics of Plasmas, Vol. 1, Issue 5
Progress on the application of ELM control schemes to ITER scenarios from the non-active phase to DT operation
journal, February 2014
- Loarte, A.; Huijsmans, G.; Futatani, S.
- Nuclear Fusion, Vol. 54, Issue 3
Impurity behaviour in the ASDEX Upgrade divertor tokamak with large area tungsten walls
journal, May 2002
- Neu, R.; Dux, R.; Geier, A.
- Plasma Physics and Controlled Fusion, Vol. 44, Issue 6
A first-principles predictive model of the pedestal height and width: development, testing and ITER optimization with the EPED model
journal, August 2011
- Snyder, P. B.; Groebner, R. J.; Hughes, J. W.
- Nuclear Fusion, Vol. 51, Issue 10
Impurity transport in Alcator C-Mod plasmas
journal, May 1997
- Rice, J. E.; Terry, J. L.; Goetz, J. A.
- Physics of Plasmas, Vol. 4, Issue 5
Influence of the heating profile on impurity transport in ASDEX Upgrade
journal, August 2003
- Dux, R.; Neu, R.; Peeters, A. G.
- Plasma Physics and Controlled Fusion, Vol. 45, Issue 9
Vacuum ultraviolet impurity spectroscopy on the Alcator C-Mod tokamak
journal, October 2010
- Reinke, M. L.; Beiersdorfer, P.; Howard, N. T.
- Review of Scientific Instruments, Vol. 81, Issue 10
Radial impurity transport in the H mode transport barrier region in Alcator C-Mod
journal, October 2000
- Pedersen, T. Sunn; Granetz, R. S.; Hubbard, A. E.
- Nuclear Fusion, Vol. 40, Issue 10
Density profile peaking in low collisionality H-modes: comparison of Alcator C-Mod data to ASDEX Upgrade/JET scalings
journal, August 2007
- Greenwald, M.; Angioni, C.; Hughes, J. W.
- Nuclear Fusion, Vol. 47, Issue 9
Scaling of density peaking in H-mode plasmas based on a combined database of AUG and JET observations
journal, August 2007
- Angioni, C.; Weisen, H.; Kardaun, O. J. W. F.
- Nuclear Fusion, Vol. 47, Issue 9
Observations on the W-transport in the core plasma of JET and ASDEX Upgrade
journal, November 2013
- Pütterich, T.; Dux, R.; Neu, R.
- Plasma Physics and Controlled Fusion, Vol. 55, Issue 12
Tokamak operation with high- Z plasma facing components
journal, November 2005
- Kallenbach, A.; Neu, R.; Dux, R.
- Plasma Physics and Controlled Fusion, Vol. 47, Issue 12B
Chapter 2: Plasma confinement and transport
journal, December 1999
- Transport, ITER Physics Expert Group on Confin; Database, ITER Physics Expert Group on Confin; Editors, ITER Physics Basis
- Nuclear Fusion, Vol. 39, Issue 12
Tungsten transport in JET H-mode plasmas in hybrid scenario, experimental observations and modelling
journal, July 2014
- Angioni, C.; Mantica, P.; Pütterich, T.
- Nuclear Fusion, Vol. 54, Issue 8
Characterization of impurity confinement on Alcator C-Mod using a multi-pulse laser blow-off system
journal, March 2011
- Howard, N. T.; Greenwald, M.; Rice, J. E.
- Review of Scientific Instruments, Vol. 82, Issue 3
Two dimensional radiated power diagnostics on Alcator C-Mod
journal, October 2008
- Reinke, M. L.; Hutchinson, I. H.
- Review of Scientific Instruments, Vol. 79, Issue 10
Edge stability and transport control with resonant magnetic perturbations in collisionless tokamak plasmas
journal, May 2006
- Evans, Todd E.; Moyer, Richard A.; Burrell, Keith H.
- Nature Physics, Vol. 2, Issue 6
Kinetic calculation of neoclassical transport including self-consistent electron and impurity dynamics
journal, July 2008
- Belli, E. A.; Candy, J.
- Plasma Physics and Controlled Fusion, Vol. 50, Issue 9
Characterization of enhanced Dα high-confinement modes in Alcator C -Mod
journal, May 1999
- Greenwald, M.; Boivin, R.; Bonoli, P.
- Physics of Plasmas, Vol. 6, Issue 5
Z dependence of the core impurity transport in ASDEX Upgrade H mode discharges
journal, November 1999
- Dux, R.; Peeters, A. G.; Gude, A.
- Nuclear Fusion, Vol. 39, Issue 11
Impurity toroidal rotation and transport in Alcator C-Mod ohmic high confinement mode plasmas
journal, May 2000
- Rice, J. E.; Goetz, J. A.; Granetz, R. S.
- Physics of Plasmas, Vol. 7, Issue 5
Edge profile stiffness and insensitivity of the density pedestal to neutral fuelling in Alcator C-Mod edge transport barriers
journal, August 2007
- Hughes, J. W.; LaBombard, B.; Terry, J.
- Nuclear Fusion, Vol. 47, Issue 8
Bootstrap current and neoclassical transport in tokamaks of arbitrary collisionality and aspect ratio
journal, September 1997
- Houlberg, W. A.; Shaing, K. C.; Hirshman, S. P.
- Physics of Plasmas, Vol. 4, Issue 9
X-ray imaging crystal spectroscopy for use in plasma transport research
journal, November 2012
- Reinke, M. L.; Podpaly, Y. A.; Bitter, M.
- Review of Scientific Instruments, Vol. 83, Issue 11
Assessment of erosion of the ITER divertor targets during type I ELMs
journal, August 2003
- Federici, G.; Loarte, A.; Strohmayer, G.
- Plasma Physics and Controlled Fusion, Vol. 45, Issue 9
ELM flushing and impurity transport in the H-mode edge barrier in ASDEX Upgrade
journal, August 2011
- Pütterich, T.; Dux, R.; Janzer, M. A.
- Journal of Nuclear Materials, Vol. 415, Issue 1
A gyro-Landau-fluid transport model
journal, July 1997
- Waltz, R. E.; Staebler, G. M.; Dorland, W.
- Physics of Plasmas, Vol. 4, Issue 7
The impact of the ITER-like wall at JET on disruptions
journal, November 2012
- de Vries, P. C.; Arnoux, G.; Huber, A.
- Plasma Physics and Controlled Fusion, Vol. 54, Issue 12
Chapter 3: MHD stability, operational limits and disruptions
journal, June 2007
- Hender, T. C.; Wesley, J. C.; Bialek, J.
- Nuclear Fusion, Vol. 47, Issue 6
Self-consistent simulation of plasma scenarios for ITER using a combination of 1.5D transport codes and free-boundary equilibrium codes
text, January 2013
- Parail, V.; Albanese, R.; Ambrosino, R.
- arXiv
Works referencing / citing this record:
Measuring the plasma composition in tokamaks with metallic plasma-facing components
journal, October 2019
- Sertoli, M.; Carvalho, Pedro Jorge; Giroud, C.
- Journal of Plasma Physics, Vol. 85, Issue 5
Study of up–down poloidal density asymmetry of high- impurities with the new impurity version of XGCa
journal, October 2019
- Dominski, J.; Chang, C. S.; Hager, R.
- Journal of Plasma Physics, Vol. 85, Issue 5
Multispecies density peaking in gyrokinetic turbulence simulations of low collisionality Alcator C-Mod plasmas
journal, June 2015
- Mikkelsen, D. R.; Bitter, M.; Delgado-Aparicio, L.
- Physics of Plasmas, Vol. 22, Issue 6
Parametric dependencies of the experimental tungsten transport coefficients in ICRH and ECRH assisted ASDEX Upgrade H-modes
journal, November 2017
- Sertoli, M.; Angioni, C.; Odstrcil, T.
- Physics of Plasmas, Vol. 24, Issue 11
Multi-scale transport in the DIII-D ITER baseline scenario with direct electron heating and projection to ITER
journal, February 2018
- Grierson, B. A.; Staebler, G. M.; Solomon, W. M.
- Physics of Plasmas, Vol. 25, Issue 2
Strategies for advantageous differential transport of ions in magnetic fusion devices
journal, March 2018
- Kolmes, E. J.; Ochs, I. E.; Fisch, N. J.
- Physics of Plasmas, Vol. 25, Issue 3
Modelling and measurement of the electrostatic potential perturbation in consideration of the non-adiabatic electron response to trace tungsten concentration in a tokamak
journal, July 2018
- Li, Erzhong; Chen, K.; Liu, H.
- Physics of Plasmas, Vol. 25, Issue 7
W transport and accumulation control in the termination phase of JET H-mode discharges and implications for ITER
journal, June 2018
- Köchl, F.; Loarte, A.; de la Luna, E.
- Plasma Physics and Controlled Fusion, Vol. 60, Issue 7
Resolving interactions between ion-cyclotron range of frequencies heating and the scrape-off layer plasma in EAST using divertor probes
journal, March 2019
- Perkins, R. J.; Hosea, J. C.; Taylor, G.
- Plasma Physics and Controlled Fusion, Vol. 61, Issue 4
Synergy of turbulent and neoclassical transport through poloidal convective cells
journal, May 2019
- Asahi, Yuuichi; Grandgirard, Virginie; Sarazin, Yanick
- Plasma Physics and Controlled Fusion, Vol. 61, Issue 6
Overview of the JET results in support to ITER
journal, June 2017
- Litaudon, X.; Abduallev, S.; Abhangi, M.
- Nuclear Fusion, Vol. 57, Issue 10
A comparison of the impact of central ECRH and central ICRH on the tungsten behaviour in ASDEX Upgrade H-mode plasmas
journal, March 2017
- Angioni, C.; Sertoli, M.; Bilato, R.
- Nuclear Fusion, Vol. 57, Issue 5
Self-consistent gyrokinetic modeling of neoclassical and turbulent impurity transport
journal, January 2018
- Estève, D.; Sarazin, Y.; Garbet, X.
- Nuclear Fusion, Vol. 58, Issue 3
First principle integrated modeling of multi-channel transport including Tungsten in JET
journal, July 2018
- Breton, S.; Casson, F. J.; Bourdelle, C.
- Nuclear Fusion, Vol. 58, Issue 9
Strategies for Advantageous Differential Transport of Ions in Magnetic Fusion Devices
text, January 2018
- Kolmes, E. J.; Ochs, I. E.; Fisch, N. J.
- arXiv
An analytic model for the collisional transport and poloidal asymmetry distribution of impurities in tokamak plasmas
journal, August 2020
- Maget, Patrick; Manas, Pierre; Frank, Judith
- Plasma Physics and Controlled Fusion, Vol. 62, Issue 10