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First Mirrors Test ...
First Mirrors Test in JET for ITER : An overview of optical performance and surface morphology
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- Rubel, Marek (författare)
- KTH,Fusionsplasmafysik,Alfvénlaboratoriet
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Coad, J. P. (författare)
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De Temmerman, G. (författare)
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Hakola, A. (författare)
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Hole, D. (författare)
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Likonen, J. (författare)
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Uytdenhouwen, I. (författare)
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Widdowson, A. (författare)
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(creator_code:org_t)
- Elsevier, 2010
- 2010
- Engelska.
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Ingår i: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier. - 0168-9002 .- 1872-9576. ; 623:2, s. 818-822
- Relaterad länk:
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http://www.sciencedi...
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https://kth.diva-por... (primary) (Raw object)
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http://kth.diva-port...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Metallic mirrors will be essential components of all optical systems for plasma diagnosis in ITER. A comprehensive First Mirror Test (FMT) has been carried out in the JET tokamak. The exposure was followed by a characterisation of mirrors and their carriers. The main results obtained by optical and surface analysis methods are: (i) reflectivity of all tested mirrors is degraded either by erosion with charge exchange neutrals or by the formation of thick deposits; (ii) deuterium and carbon are the main elements detected on all mirror surfaces and the presence of beryllium is also found in several cases; (iii) thick deposits show columnar structure; (iv) bubble-like structures are detected in deposits; their formation is a probable reason for deposits' disintegration and peeling-off; (v) the deposition in channels in the divertor cassettes is pronounced at the very entrance and then it sharply decreases with the distance from the plasma, lambda similar to 5-7 mm.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Nyckelord
- Diagnostic mirrors
- Surface analysis
- Reflectivity
- Erosion and deposition
- JET
- ITER
- Atomic and molecular physics
- Atom- och molekylfysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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