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Nuclear analysis of the ITER Torus Cryopumps

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dc.contributor.authorPedroche Sánchez, Gabriel
dc.contributor.authorLópez Revelles, Antonio Jesús
dc.contributor.authorKolsek, Aljaz
dc.contributor.authorDremel, Matthias
dc.contributor.authorBansal, Gurpreet
dc.contributor.authorPearce, Robert
dc.contributor.authorSanz Gozalo, Javier
dc.contributor.authorJuárez Mañas, Rafael
dc.date.accessioned2026-02-24T15:25:30Z
dc.date.available2026-02-24T15:25:30Z
dc.date.issued2019-09-09
dc.descriptionThis is an Accepted Manuscript of an article published by IOP Publishing in "Nuclear Fusion 59 (10), 1-11", available at: https://doi.org/10.1088/1741-4326/ab38d1
dc.descriptionEste es el manuscrito aceptado del artículo publicado por IOP Publishing en "Nuclear Fusion 59 (10), 1-11", disponible en línea: https://doi.org/10.1088/1741-4326/ab38d1
dc.description.abstractThe ITER Tokamak will feature six torus cryopumps (TCP) to maintain the vacuum requirements inside the vacuum vessel for plasma operation. They will be connected to the ITER vacuum vessel through the lower ducts, which have limited shielding to ensure an efficient pumping. Therefore, these ducts will represent a relevant path for radiation to travel from the plasma and affect diverse aspects of the ITER facility, such as the electronics allocation or the maintenance operations during the machine shutdown. Previous analyses have addressed these important aspects. Nonetheless, limitations in those studies and design evolution have justified a new analysis, specifically dedicated to the TCP final design review. The results of the nuclear analysis are presented here focusing on the B1 level port cell #4. The TCP design and the associated and neighboring equipment have evolved and updated models have been considered. The TCP modelling has required an explicit heterogeneous treatment of the internal parts. The radiation source from the divertor cooling water pipes running along the port cell ceiling has been considered with the latest available source definition. In terms of methodology, one major improvement has been the modelling of the radiation transmission from C-model to the Tokamak Complex model. Another important improvement has been the consideration of D1SUNED for the determination of shutdown dose rates, covering a broader fraction of the radioactive inventory than in previous studies. The following quantities have been determined: neutron flux, absorbed dose to silicon, 1 MeV equivalent neutron fluence and shutdown dose rates (SDDR) after 106 s of cooling time. Finally, a set of proposals have been made to considerably mitigate the SDDR after 106 s of cooling. This work represents a realistic and matured source of information of the radiation environment in the ITER TCP port cells as presented in the final design review.en
dc.description.provenanceMade available in DSpace on 2026-02-24T15:25:30Z (GMT). No. of bitstreams: 1 Nuclear analysis of the ITER Torus Cryopumps. Antonio López Revelles.pdf: 2993620 bytes, checksum: c984a5e2325d96fcdacb86478585c87b (MD5) Previous issue date: 2019-09-09en
dc.description.versionversión final
dc.identifier.citationPedroche, G., Lopez-Revelles, A. J., Kolsek, A., Dremel M. , Bansal G., Pearce, R., Sanz, J. and Juarez, R., (2019). Nuclear analysis of the ITER torus cryopumps. Nuclear Fusion 59(10),1-11. https://doi.org/10.1088/1741-4326/ab38d1
dc.identifier.doihttps://doi.org/10.1088/1741-4326/ab38d1
dc.identifier.eissn1741-4326
dc.identifier.issn0029-5515
dc.identifier.urihttps://hdl.handle.net/20.500.14468/31931
dc.journal.issue10
dc.journal.titleNuclear Fusion
dc.journal.volume59
dc.language.isoen
dc.page.final11
dc.page.initial1
dc.publisherIOP Publishing
dc.relation.centerEscuela Técnica Superior de Ingenieros Industriales
dc.relation.departmentIngeniería Energética
dc.relation.researchgroupTecnología sistemas de fisión, fusión y de fuentes de irradiación (TECF3IR)
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject3320 Tecnología nuclear
dc.subject.keywordsDirect-one Step methoden
dc.subject.keywordsD1Sen
dc.subject.keywordsShutdown dose ratesen
dc.subject.keywordsSDDRen
dc.subject.keywordsPort cellen
dc.subject.keywordsTCPen
dc.subject.keywordsITERen
dc.titleNuclear analysis of the ITER Torus Cryopumpsen
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
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relation.isAuthorOfPublication157ae11a-67ef-408c-a432-9f86c95cc03a
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relation.isAuthorOfPublication.latestForDiscovery4feceae8-c910-42c4-a2c5-90d13fa4c383
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