In-situ deposition of silicon on the leading edge of the ALT-II limiter in TEXTOR-94

G. Mank; J. A. Boedo; P. Wienhold; H. G. Esser; K. H. Finken; L. Könen; A. Pospieszczyk; J. Rapp; J. Schwelberger; F. Weschenfelder; J. Winter

doi:10.1016/s0022-3115(97)80147-x

In-situ deposition of silicon on the leading edge of the ALT-II limiter in TEXTOR-94

G. Mank, J. A. Boedo, P. Wienhold, H. G. Esser, K. H. Finken, L. Könen, A. Pospieszczyk, J. Rapp, J. Schwelberger, F. Weschenfelder, J. Winter

Research output: Contribution to journal › Article › peer-review

Abstract

Silane gas was injected through apertures in the leading edges of the ALT-II limiter in TEXTOR during tokamak discharges. The gas injection produces a hard, robust local coating which protects the exposed surfaces against erosion. As a byproduct, metallic impurities in the plasma are reduced, a radiation belt at the plasma periphery is generated and there is evidence that a major part of the wall is coated. For the given experimental condition the rise time until the carbon flux on a siliconized surface reaches the former level amounts to 5-10 s for ohmic discharges. For strongly heated discharges the deposited Si layer is eroded in about 1 s. The deposition technique has potential applications for in-situ protection/repair of divertor erosion in ITER.

Original language	English
Pages (from-to)	821-826
Number of pages	6
Journal	Journal of Nuclear Materials
Volume	241-243
DOIs	https://doi.org/10.1016/s0022-3115(97)80147-x
State	Published - Feb 11 1997
Externally published	Yes

Keywords

Erosion and particle deposition
Limiter
TEXTOR
Wall coating
Wall conditioning

UN SDGs

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

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10.1016/s0022-3115(97)80147-x

Cite this

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title = "In-situ deposition of silicon on the leading edge of the ALT-II limiter in TEXTOR-94",

abstract = "Silane gas was injected through apertures in the leading edges of the ALT-II limiter in TEXTOR during tokamak discharges. The gas injection produces a hard, robust local coating which protects the exposed surfaces against erosion. As a byproduct, metallic impurities in the plasma are reduced, a radiation belt at the plasma periphery is generated and there is evidence that a major part of the wall is coated. For the given experimental condition the rise time until the carbon flux on a siliconized surface reaches the former level amounts to 5-10 s for ohmic discharges. For strongly heated discharges the deposited Si layer is eroded in about 1 s. The deposition technique has potential applications for in-situ protection/repair of divertor erosion in ITER.",

keywords = "Erosion and particle deposition, Limiter, TEXTOR, Wall coating, Wall conditioning",

author = "G. Mank and Boedo, {J. A.} and P. Wienhold and Esser, {H. G.} and Finken, {K. H.} and L. K{\"o}nen and A. Pospieszczyk and J. Rapp and J. Schwelberger and F. Weschenfelder and J. Winter",

year = "1997",

month = feb,

day = "11",

doi = "10.1016/s0022-3115(97)80147-x",

language = "English",

volume = "241-243",

pages = "821--826",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

}

TY - JOUR

T1 - In-situ deposition of silicon on the leading edge of the ALT-II limiter in TEXTOR-94

AU - Mank, G.

AU - Boedo, J. A.

AU - Wienhold, P.

AU - Esser, H. G.

AU - Finken, K. H.

AU - Könen, L.

AU - Pospieszczyk, A.

AU - Rapp, J.

AU - Schwelberger, J.

AU - Weschenfelder, F.

AU - Winter, J.

PY - 1997/2/11

Y1 - 1997/2/11

N2 - Silane gas was injected through apertures in the leading edges of the ALT-II limiter in TEXTOR during tokamak discharges. The gas injection produces a hard, robust local coating which protects the exposed surfaces against erosion. As a byproduct, metallic impurities in the plasma are reduced, a radiation belt at the plasma periphery is generated and there is evidence that a major part of the wall is coated. For the given experimental condition the rise time until the carbon flux on a siliconized surface reaches the former level amounts to 5-10 s for ohmic discharges. For strongly heated discharges the deposited Si layer is eroded in about 1 s. The deposition technique has potential applications for in-situ protection/repair of divertor erosion in ITER.

AB - Silane gas was injected through apertures in the leading edges of the ALT-II limiter in TEXTOR during tokamak discharges. The gas injection produces a hard, robust local coating which protects the exposed surfaces against erosion. As a byproduct, metallic impurities in the plasma are reduced, a radiation belt at the plasma periphery is generated and there is evidence that a major part of the wall is coated. For the given experimental condition the rise time until the carbon flux on a siliconized surface reaches the former level amounts to 5-10 s for ohmic discharges. For strongly heated discharges the deposited Si layer is eroded in about 1 s. The deposition technique has potential applications for in-situ protection/repair of divertor erosion in ITER.

KW - Erosion and particle deposition

KW - Limiter

KW - TEXTOR

KW - Wall coating

KW - Wall conditioning

UR - http://www.scopus.com/inward/record.url?scp=85087581328&partnerID=8YFLogxK

U2 - 10.1016/s0022-3115(97)80147-x

DO - 10.1016/s0022-3115(97)80147-x

M3 - Article

AN - SCOPUS:85087581328

SN - 0022-3115

VL - 241-243

SP - 821

EP - 826

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

In-situ deposition of silicon on the leading edge of the ALT-II limiter in TEXTOR-94

Abstract

Keywords

UN SDGs

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