Tungsten erosion by arcs in ASDEX Upgrade

V. Rohde; N. Endstrasser; U. von Toussaint; M. Balden; T. Lunt; R. Neu; Antti Hakola; J. Bucalossi; ASDEX Upgrade Team

doi:10.1016/j.jnucmat.2010.11.045

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 journal › Article › Scientific › peer-review

51 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 language	English
Pages (from-to)	S46-S50
Journal	Journal of Nuclear Materials
Volume	415
Issue number	1, supplement
DOIs	https://doi.org/10.1016/j.jnucmat.2010.11.045
Publication status	Published - 2011
MoE publication type	A1 Journal article-refereed
Event	19th International Conference on Plasma Surface Interactions in Controlled Fusion Devices, PSI-19 - San Diego, United States Duration: 24 May 2010 → 28 May 2010

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jnucmat.2010.11.045

Cite this

@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",

note = "19th International Conference on Plasma Surface Interactions in Controlled Fusion Devices, PSI-19 ; Conference date: 24-05-2010 Through 28-05-2010",

}

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

SN - 0022-3115

VL - 415

SP - S46-S50

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1, supplement

T2 - 19th International Conference on Plasma Surface Interactions in Controlled Fusion Devices, PSI-19

Y2 - 24 May 2010 through 28 May 2010

ER -

Tungsten erosion by arcs in ASDEX Upgrade

Abstract

UN SDGs

Access to Document

Fingerprint

Cite this