dc.creator | Rubel, M. | es |
dc.creator | Petersson, P. | es |
dc.creator | Zhou, Y. | es |
dc.creator | Coad, J.P. | es |
dc.creator | Lungu, C. | es |
dc.creator | Jet Contributors | es |
dc.creator | García Muñoz, Manuel | es |
dc.date.accessioned | 2020-08-25T15:40:46Z | |
dc.date.available | 2020-08-25T15:40:46Z | |
dc.date.issued | 2017-06 | |
dc.identifier.citation | Rubel, M., Petersson, P., Zhou, Y., Coad, J.P., Lungu, C., Jet Contributors, y García Muñoz, M. (2017). Fuel inventory and deposition in castellated structures in JET-ILW. Nuclear Fusion, 57 (6), 066027-. | |
dc.identifier.issn | 1741-4326 | es |
dc.identifier.uri | https://hdl.handle.net/11441/100422 | |
dc.description.abstract | Since 2011 the JET tokamak has been operated with a metal ITER-like wall (JET-ILW) including
castellated beryllium limiters and lamellae-type bulk tungsten tiles in the divertor. This has allowed
for a large scale test of castellated plasma-facing components (PFC). Procedures for sectioning the
limiters into single blocks of castellation have been developed. This facilitated morphology studies
of morphology of surfaces inside the grooves for limiters after experimental campaigns 2011–2012
and 2013–2014. The deposition in the 0.4–0.5mm wide grooves of the castellation is ‘shallow’.
It reaches 1–2mm into the 12mm deep gap. Deuterium concentrations are small (mostly below
1 × 1018 cm−2
). The estimated total amount of deuterium in all the castellated limiters does not
exceed the inventory of the plasma-facing surfaces (PFS) of the limiters. There are only traces of
Ni, Cr and Fe deposited in the castellation gaps. The same applies to the carbon content. Also low
deposition of D, Be and C has been measured on the sides of the bulk tungsten lamellae pieces.
Modelling clearly reflects: (a) a sharp decrease in the measured deposition profiles and
(b) an increase in deposition with the gap width. Both experimental and modelling data give a strong
indication and information to ITER that narrow gaps in the castellated PFC are essential. X-ray
diffraction on PFS has clearly shown two distinct composition patterns: Be with an admixture of
Be–W intermetallic compounds (e.g. Be22W) in the deposition zone, whilst only pure Be has been detected in the erosion zone. The lack of compound formation in the erosion zone indicates that no distinct changes in the thermo-mechanical properties of the Be PFC might be expected. | es |
dc.description.sponsorship | EURATOM 633053 | es |
dc.description.sponsorship | Swedish Research Council (VR) 2015–04844 | es |
dc.format | application/pdf | es |
dc.format.extent | 8 p. | es |
dc.language.iso | eng | es |
dc.publisher | IOP Publishing | es |
dc.relation.ispartof | Nuclear Fusion, 57 (6), 066027-. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | JET | es |
dc.subject | ITER-like wall | es |
dc.subject | Beryllium limiters | es |
dc.subject | Castellation | es |
dc.subject | Deposition | es |
dc.subject | Fuel inventory | es |
dc.title | Fuel inventory and deposition in castellated structures in JET-ILW | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear | es |
dc.relation.projectID | 633053 | es |
dc.relation.projectID | 2015–04844 | es |
dc.relation.publisherversion | https://doi.org/10.1088/1741-4326/aa6864 | es |
dc.identifier.doi | 10.1088/1741-4326/aa6864 | es |
dc.contributor.group | Universidad de Sevilla. RNM138: Física Nuclear Aplicada | es |
dc.journaltitle | Nuclear Fusion | es |
dc.publication.volumen | 57 | es |
dc.publication.issue | 6 | es |
dc.publication.initialPage | 066027 | es |