Exposures of tungsten nanostructures to divertor plasmas in DIII-D

Rudakov, D. L.; Wong, C. P. C.; Doerner, R. P.; Wright, G. M.; Abrams, T.; Baldwin, M. J.; Boedo, J. A.; Briesemeister, A. R.; Chrobak, C. P.; Guo, H. Y.; Hollmann, E. M.; McLean, A. G.; Fenstermacher, M. E.; Lasnier, C. J.; Leonard, A. W.; Moyer, R. A.; Pace, D. C.; Thomas, D. M.; Watkins, J. G.

doi:10.1088/0031-8949/T167/1/014055

Title: Exposures of tungsten nanostructures to divertor plasmas in DIII-D

Journal Article · Fri Jan 22 00:00:00 EST 2016 · Physica Scripta

DOI:https://doi.org/10.1088/0031-8949/T167/1/014055· OSTI ID:1324205

Rudakov, D. L. ^[1]; Wong, C. P. C. ^[2]; Doerner, R. P. ^[1]; Wright, G. M. ^[3]; Abrams, T. ^[4]; Baldwin, M. J. ^[1]; Boedo, J. A. ^[1]; Briesemeister, A. R. ^[5]; Chrobak, C. P. ^[2]; Guo, H. Y. ^[2]; Hollmann, E. M. ^[1]; McLean, A. G. ^[6]; Fenstermacher, M. E. ^[6]; Lasnier, C. J. ^[6]; Leonard, A. W. ^[2]; Moyer, R. A. ^[1]; Pace, D. C. ^[2]; Thomas, D. M. ^[2]; Watkins, J. G. ^[7]

Univ. of California San Diego, La Jolla, CA (United States)
General Atomics, San Diego, CA (United States)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Oak Ridge Institute for Science and Education, Oak Ridge, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sandia National Lab. (SNL-CA), Livermore, CA (United States)

Tungsten nanostructures (W-fuzz) prepared in the PISCES-A linear device have been found to survive direct exposure to divertor plasmas in DIII-D. W-fuzz was exposed in the lower divertor of DIII-D using the Divertor Material Evaluation System (DiMES). Two samples were exposed in lower single null (LSN) deuterium H-mode plasmas. The first sample was exposed in three discharges terminated by Vertical Displacement Event (VDE) disruptions, and the second in two discharges near the lowered X-point. More recently, three samples were exposed near the lower outer strike point in predominantly helium H-mode LSN plasmas. In all cases, the W-fuzz survived plasma exposure with little obvious damage except in the areas where unipolar arcing occurred. Arcing is effective in W-fuzz removal, and it appears that surfaces covered with W-fuzz can be more prone to arcing than smooth W surfaces.

View Accepted Manuscript (DOE)

Cite

Export

Save

Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); General Atomics, San Diego, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Contributing Organization:: University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0417 USA MIT Plasma Science and Fusion Ctr, 77 Massachusetts Ave.,Cambridge, MA 02139 USA Oak Ridge Institute for Science and Education, Oak Ridge, TN 37830, USA Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550, USA Sandia National Laboratory, PO Box 969, Livermore, CA 94551-0969 USA

Grant/Contract Number:: AC05-00OR22725; AC04-94AL85000; AC05-06OR23100; AC52-07NA27344; FC02-04ER54698; FG02-07ER54917; SC0002060

OSTI ID:: 1324205

Alternate ID(s):: OSTI ID: 1235510; OSTI ID: 1369219

Journal Information:: Physica Scripta, Vol. T167; ISSN 0031-8949

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 29 works

Citation information provided by
Web of Science

References (14)

Helium induced nanoscopic morphology on tungsten under fusion relevant plasma conditions Baldwin, M. J.; Doerner, R. P. Nuclear Fusion, Vol. 48, Issue 3 https://doi.org/10.1088/0029-5515/48/3/035001	journal	January 2008
The occurrence and damage of unipolar arcing on fuzzy tungsten Aussems, D. U. B.; Nishijima, D.; Brandt, C. Journal of Nuclear Materials, Vol. 463 https://doi.org/10.1016/j.jnucmat.2014.09.009	journal	August 2015
Exposure of tungsten nano-structure to TEXTOR edge plasma Ueda, Y.; Miyata, K.; Ohtsuka, Y. Journal of Nuclear Materials, Vol. 415, Issue 1 https://doi.org/10.1016/j.jnucmat.2010.08.019	journal	August 2011
Exfoliation of the tungsten fibreform nanostructure by unipolar arcing in the LHD divertor plasma Tokitani, M.; Kajita, S.; Masuzaki, S. Nuclear Fusion, Vol. 51, Issue 10 https://doi.org/10.1088/0029-5515/51/10/102001	journal	August 2011
Comparison of tungsten nano-tendrils grown in Alcator C-Mod and linear plasma devices Wright, G. M.; Brunner, D.; Baldwin, M. J. Journal of Nuclear Materials, Vol. 438 https://doi.org/10.1016/j.jnucmat.2013.01.013	journal	July 2013
Plasma surface interaction experimental facility (PISCES) for materials and edge physics studies Goebel, D. M.; Campbell, G.; Conn, R. W. Journal of Nuclear Materials, Vol. 121 https://doi.org/10.1016/0022-3115(84)90135-1	journal	May 1984
A design retrospective of the DIII-D tokamak Luxon, J. L. Nuclear Fusion, Vol. 42, Issue 5 https://doi.org/10.1088/0029-5515/42/5/313	journal	May 2002
Divertor materials evaluation system (DiMES) Wong, C. P. C.; Whyte, D. G.; Bastasz, R. J. Journal of Nuclear Materials, Vol. 258-263 https://doi.org/10.1016/S0022-3115(98)00407-3	journal	October 1998
Investigation of He–W interactions using DiMES on DIII-D Doerner, R. P.; Rudakov, D. L.; Chrobak, C. P. Physica Scripta, Vol. T167 https://doi.org/10.1088/0031-8949/T167/1/014054	journal	January 2016
Characterization of heat loads from mitigated and unmitigated vertical displacement events in DIII-D Hollmann, E. M.; Commaux, N.; Eidietis, N. W. Physics of Plasmas, Vol. 20, Issue 6 https://doi.org/10.1063/1.4810792	journal	June 2013
Plasma-material interactions in current tokamaks and their implications for next step fusion reactors Federici, G.; Skinner, C. H.; Brooks, J. N. Nuclear Fusion, Vol. 41, Issue 12 https://doi.org/10.1088/0029-5515/41/12/218	journal	December 2001
Arcing and its role in PFC erosion and dust production in DIII-D Rudakov, D. L.; Chrobak, C. P.; Doerner, R. P. Journal of Nuclear Materials, Vol. 438 https://doi.org/10.1016/j.jnucmat.2013.01.173	journal	July 2013
Sputtering properties of tungsten ‘fuzzy’ surfaces Nishijima, D.; Baldwin, M. J.; Doerner, R. P. Journal of Nuclear Materials, Vol. 415, Issue 1 https://doi.org/10.1016/j.jnucmat.2010.12.017	journal	August 2011
Net versus gross erosion of high- Z materials in the divertor of DIII-D Rudakov, D. L.; Stangeby, P. C.; Wampler, W. R. Physica Scripta, Vol. T159 https://doi.org/10.1088/0031-8949/2014/T159/014030	journal	April 2014

Cited By (3)

Ignition and erosion of materials by arcing in fusion-relevant conditions Hwangbo, Dogyun; Kajita, Shin; Barengolts, Sergey A. Contributions to Plasma Physics, Vol. 58, Issue 6-8 https://doi.org/10.1002/ctpp.201700157	journal	May 2018
The influence of plasma-surface interaction on the performance of tungsten at the ITER divertor vertical targets De Temmerman, G.; Hirai, T.; Pitts, R. A. Plasma Physics and Controlled Fusion, Vol. 60, Issue 4 https://doi.org/10.1088/1361-6587/aaaf62	journal	March 2018
Helium flux effects on bubble growth and surface morphology in plasma-facing tungsten from large-scale molecular dynamics simulations Hammond, Karl D.; Naeger, Ian V.; Widanagamaachchi, Wathsala Nuclear Fusion, Vol. 59, Issue 6 https://doi.org/10.1088/1741-4326/ab12f6	journal	May 2019

Similar Records

Impact of divertor material on neutral recycling and discharge fueling in DIII-D

Journal Article · Fri Mar 13 00:00:00 EDT 2020 · Physica Scripta (Online) · OSTI ID:1324205

Bykov, I.; Rudakov, D. L.; Pigarov, A. Yu; +11 more

Investigation of He–W interactions using DiMES on DIII-D

Journal Article · Fri Jan 22 00:00:00 EST 2016 · Physica Scripta · OSTI ID:1324205

Doerner, R. P.; Rudakov, D. L.; Chrobak, C. P.; +11 more

DiMES Studies of Temperature Dependence of Carbon Erosion and Re-Deposition in the DIII-D Divertor

Journal Article · Mon Oct 02 00:00:00 EDT 2006 · Physica Scripta · OSTI ID:1324205

Rudakov, D; Jacob, W; Krieger, K; +21 more

Related Subjects

36 MATERIALS SCIENCE
tungsten
W-fuzz
DiMES
divertor
DIII-D

Title: Exposures of tungsten nanostructures to divertor plasmas in DIII-D

Citation Formats

References (14)

Cited By (3)

Similar Records

Related Subjects