Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 101-106 |
| Journal | Fusion Engineering and Design |
| Volume | 96-97 |
| DOIs | |
| Publication status | Published - 2015 |
| MoE publication type | A1 Journal article-refereed |
| Event | 28th Symposium on Fusion Technology, SOFT 2014 - San Sebastián, Spain Duration: 29 Sep 2014 → 3 Oct 2014 Conference number: 28 |
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Keywords
- arc discharge
- cleaning rate
- diagnostics mirror
- ITER
- plasma sputtering
- plasma-facing component
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Feasibility of arc-discharge and plasma-sputtering methods in cleaning plasma-facing and diagnostics components of fusion reactors. / Hakola, Antti (Corresponding Author); Likonen, Jari; Karhunen, Juuso; Korhonen, Juuso T.; Aints, Märt; Laan, Matti; Paris, Peeter; Kolehmainen, Jukka; Koskinen, Mika; Tervakangas, Sanna.
In: Fusion Engineering and Design, Vol. 96-97, 2015, p. 101-106.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Feasibility of arc-discharge and plasma-sputtering methods in cleaning plasma-facing and diagnostics components of fusion reactors
AU - Hakola, Antti
AU - Likonen, Jari
AU - Karhunen, Juuso
AU - Korhonen, Juuso T.
AU - Aints, Märt
AU - Laan, Matti
AU - Paris, Peeter
AU - Kolehmainen, Jukka
AU - Koskinen, Mika
AU - Tervakangas, Sanna
PY - 2015
Y1 - 2015
N2 - We have studied the feasibility of arc-discharge and plasma-sputtering methods in removing deposited layers from ITER-relevant test samples. Prototype devices have been designed and constructed for the experiments and the cleaning process is monitored by a spectral detection system. The present version of the arc-discharge device is capable of removing 1-µm thick layers from 350-mm2 areas in 4-8 s, but due to the increased roughness of the cleaned surfaces and signs of local melting, mirror-like surfaces cannot be treated by this technique. The plasma-sputtering approach, for its part, is some 5-10 times slower in removing the deposited layers but no changes in surface roughness or morphology of the samples could be observed after the cleaning phase. The arc-discharge technique could therefore be used for rapid cleaning of plasma-facing components during maintenance shutdowns of ITER while in the case of diagnostics mirrors plasma sputtering is preferred.
AB - We have studied the feasibility of arc-discharge and plasma-sputtering methods in removing deposited layers from ITER-relevant test samples. Prototype devices have been designed and constructed for the experiments and the cleaning process is monitored by a spectral detection system. The present version of the arc-discharge device is capable of removing 1-µm thick layers from 350-mm2 areas in 4-8 s, but due to the increased roughness of the cleaned surfaces and signs of local melting, mirror-like surfaces cannot be treated by this technique. The plasma-sputtering approach, for its part, is some 5-10 times slower in removing the deposited layers but no changes in surface roughness or morphology of the samples could be observed after the cleaning phase. The arc-discharge technique could therefore be used for rapid cleaning of plasma-facing components during maintenance shutdowns of ITER while in the case of diagnostics mirrors plasma sputtering is preferred.
KW - arc discharge
KW - cleaning rate
KW - diagnostics mirror
KW - ITER
KW - plasma sputtering
KW - plasma-facing component
UR - https://www.sciencedirect.com/journal/fusion-engineering-and-design/vol/96/suppl/C
U2 - 10.1016/j.fusengdes.2014.12.003
DO - 10.1016/j.fusengdes.2014.12.003
M3 - Article
VL - 96-97
SP - 101
EP - 106
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
SN - 0920-3796
ER -