onr:"swepub:oai:DiVA.org:kth-271959"
Search: onr:"swepub:oai:DiVA.org:kth-271959" > Fuel inventory and ...
- 1 of 1
- Previous record
- Next record
- To hitlist
- Moon, SunwooKTH,Fusionsplasmafysik (author)
Fuel inventory and impurity deposition in castellated tungsten tiles in KSTAR : experiment and modelling
- Article/chapterEnglish2020
Publisher, publication year, extent ...
- 2020-03-06
- IOP PUBLISHING LTD,2020
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:kth-271959
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-271959URI
- https://doi.org/10.1088/1402-4896/ab51f4DOI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- QC 20200415
- Plasma-facing components have castellated structure for thermo-mechanical durability and integrity under high heat flux loads. However, fuel co-deposition in the grooves of the castellation may enhance fuel retention. In KSTAR, castellated tungsten tiles were tested to investigate the impact of tile shaping and misalignment on the retention. The tiles with poloidal and toroidal gaps of 0.5 mm were exposed at the divertor during a whole campaign encompassing 4364 s of plasma operation. Surfaces inside the gaps were analysed by means of 3He-based micro-NRA, ERDA and PIXE. Modelling of carbon deposition was performed with the impurity transport code 3D-GAPS assuming impurity penetration along the magnetic field lines with plasma-wetted areas defined by simple geometrical shadowing. The main deposited element is carbon with different concentration at the entrance of the groove, dependent on the tile shaping: 6 x 10(17) cm(-2) for a chamfered and misaligned gap and up to 283 x 10(17) cm(-2) for a flat and aligned gap. The deposition patterns are exponentially decreased to 4-10 x 10(16) cm(-2) inside the gap. Deuterium concentration in the gaps described above ranges, respectively, from 2 x 10(17) cm(-2) to 50 x 10(17) cm(-2) at the top of the groove and decreases to 1-4 x 10(16) cm(-2) following the carbon deposition trends. The highest carbon and deuterium densities are measured at the plasma-exposed side of the flat tile and aligned gap. Modelled deposition profiles reproduce qualitatively the experimentally observed trends.
Subject headings and genre
- NATURVETENSKAP Fysik hsv//swe
- NATURAL SCIENCES Physical Sciences hsv//eng
- plasma-facing components
- castellation
- tungsten
- KSTAR
- deposition
- fuel retention
Added entries (persons, corporate bodies, meetings, titles ...)
- Bang, EunnamNatl Fus Res Inst, Daejeon, South Korea. (author)
- Petersson, PerKTH,Fusionsplasmafysik(Swepub:kth)u1mnanst (author)
- Matveev, DmitryForschungszentrum Julich, Inst Energie & Klimaforsch Plasmaphy, D-52425 Julich, Germany. (author)
- Hong, Suk-HoNatl Fus Res Inst, Daejeon, South Korea. (author)
- Kirschner, AndreasForschungszentrum Julich, Inst Energie & Klimaforsch Plasmaphy, D-52425 Julich, Germany. (author)
- Rubel, MarekKTH,Fusionsplasmafysik(Swepub:kth)u1vrej8y (author)
- KTHFusionsplasmafysik (creator_code:org_t)
Related titles
- In:Physica Scripta: IOP PUBLISHING LTDT171:10031-89491402-4896
Internet link
Find in a library
- Physica Scripta (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Moon, Sunwoo
- Bang, Eunnam
- Petersson, Per
- Matveev, Dmitry
- Hong, Suk-Ho
- Kirschner, Andre ...
- show more...
- Rubel, Marek
- show less...
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
- Articles in the publication
- Physica Scripta
- By the university
- Royal Institute of Technology
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
