Tungsten erosion by arcs in ASDEX Upgrade

V. Rohde (Corresponding Author), N. Endstrasser, U. von Toussaint, M. Balden, T. Lunt, R. Neu, Antti Hakola, J. Bucalossi, ASDEX Upgrade Team

Research output: Contribution to journalArticleScientificpeer-review

28 Citations (Scopus)

Abstract

The transition from carbon to high-Z divertor devices reduces the erosion of the plasma facing components (PFC) strongly. Arcing as second erosion mechanism beside physical sputtering may now dominating the erosion. A procedure based on photographic techniques, profilometry and scanning electron microscopy was developed to investigate arc damage in ASDEX Upgrade. At the inner divertor baffle region erosion by arcing dominates the physical sputtering by a factor of 7. Whereas the number of arc traces only depends on the position of the tile, the effective erosion strongly depends on the surface resistivity of the PFCs. Video observations with high temporal and spatial resolution correlates the onset of arcing with the appearance of ELMs at the inner divertor baffle.
Original languageEnglish
Pages (from-to)S46-S50
JournalJournal of Nuclear Materials
Volume415
Issue number1, supplement
DOIs
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed
Event19th International Conference on Plasma Surface Interactions in Controlled Fusion Devices, PSI-19 - San Diego, United States
Duration: 24 May 201028 May 2010

Fingerprint

Tungsten
erosion
Erosion
tungsten
arcs
baffles
Sputtering
sputtering
Profilometry
tiles
Tile
temporal resolution
Carbon
spatial resolution
damage
Plasmas
Scanning electron microscopy
electrical resistivity
scanning electron microscopy
carbon

Cite this

Rohde, V., Endstrasser, N., von Toussaint, U., Balden, M., Lunt, T., Neu, R., ... ASDEX Upgrade Team (2011). Tungsten erosion by arcs in ASDEX Upgrade. Journal of Nuclear Materials, 415(1, supplement), S46-S50. https://doi.org/10.1016/j.jnucmat.2010.11.045
Rohde, V. ; Endstrasser, N. ; von Toussaint, U. ; Balden, M. ; Lunt, T. ; Neu, R. ; Hakola, Antti ; Bucalossi, J. ; ASDEX Upgrade Team. / Tungsten erosion by arcs in ASDEX Upgrade. In: Journal of Nuclear Materials. 2011 ; Vol. 415, No. 1, supplement. pp. S46-S50.
@article{6b00a937c7854358a77e2de30c9f2b20,
title = "Tungsten erosion by arcs in ASDEX Upgrade",
abstract = "The transition from carbon to high-Z divertor devices reduces the erosion of the plasma facing components (PFC) strongly. Arcing as second erosion mechanism beside physical sputtering may now dominating the erosion. A procedure based on photographic techniques, profilometry and scanning electron microscopy was developed to investigate arc damage in ASDEX Upgrade. At the inner divertor baffle region erosion by arcing dominates the physical sputtering by a factor of 7. Whereas the number of arc traces only depends on the position of the tile, the effective erosion strongly depends on the surface resistivity of the PFCs. Video observations with high temporal and spatial resolution correlates the onset of arcing with the appearance of ELMs at the inner divertor baffle.",
author = "V. Rohde and N. Endstrasser and {von Toussaint}, U. and M. Balden and T. Lunt and R. Neu and Antti Hakola and J. Bucalossi and {ASDEX Upgrade Team}",
year = "2011",
doi = "10.1016/j.jnucmat.2010.11.045",
language = "English",
volume = "415",
pages = "S46--S50",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",
number = "1, supplement",

}

Rohde, V, Endstrasser, N, von Toussaint, U, Balden, M, Lunt, T, Neu, R, Hakola, A, Bucalossi, J & ASDEX Upgrade Team 2011, 'Tungsten erosion by arcs in ASDEX Upgrade', Journal of Nuclear Materials, vol. 415, no. 1, supplement, pp. S46-S50. https://doi.org/10.1016/j.jnucmat.2010.11.045

Tungsten erosion by arcs in ASDEX Upgrade. / Rohde, V. (Corresponding Author); Endstrasser, N.; von Toussaint, U.; Balden, M.; Lunt, T.; Neu, R.; Hakola, Antti; Bucalossi, J.; ASDEX Upgrade Team.

In: Journal of Nuclear Materials, Vol. 415, No. 1, supplement, 2011, p. S46-S50.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Tungsten erosion by arcs in ASDEX Upgrade

AU - Rohde, V.

AU - Endstrasser, N.

AU - von Toussaint, U.

AU - Balden, M.

AU - Lunt, T.

AU - Neu, R.

AU - Hakola, Antti

AU - Bucalossi, J.

AU - ASDEX Upgrade Team

PY - 2011

Y1 - 2011

N2 - The transition from carbon to high-Z divertor devices reduces the erosion of the plasma facing components (PFC) strongly. Arcing as second erosion mechanism beside physical sputtering may now dominating the erosion. A procedure based on photographic techniques, profilometry and scanning electron microscopy was developed to investigate arc damage in ASDEX Upgrade. At the inner divertor baffle region erosion by arcing dominates the physical sputtering by a factor of 7. Whereas the number of arc traces only depends on the position of the tile, the effective erosion strongly depends on the surface resistivity of the PFCs. Video observations with high temporal and spatial resolution correlates the onset of arcing with the appearance of ELMs at the inner divertor baffle.

AB - The transition from carbon to high-Z divertor devices reduces the erosion of the plasma facing components (PFC) strongly. Arcing as second erosion mechanism beside physical sputtering may now dominating the erosion. A procedure based on photographic techniques, profilometry and scanning electron microscopy was developed to investigate arc damage in ASDEX Upgrade. At the inner divertor baffle region erosion by arcing dominates the physical sputtering by a factor of 7. Whereas the number of arc traces only depends on the position of the tile, the effective erosion strongly depends on the surface resistivity of the PFCs. Video observations with high temporal and spatial resolution correlates the onset of arcing with the appearance of ELMs at the inner divertor baffle.

U2 - 10.1016/j.jnucmat.2010.11.045

DO - 10.1016/j.jnucmat.2010.11.045

M3 - Article

VL - 415

SP - S46-S50

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - 1, supplement

ER -

Rohde V, Endstrasser N, von Toussaint U, Balden M, Lunt T, Neu R et al. Tungsten erosion by arcs in ASDEX Upgrade. Journal of Nuclear Materials. 2011;415(1, supplement):S46-S50. https://doi.org/10.1016/j.jnucmat.2010.11.045