dc.creator | Vries, P. C. de | es |
dc.creator | Luce, T. C. | es |
dc.creator | Bae, Y. S. | es |
dc.creator | Gerhardt, S. | es |
dc.creator | Gong, X. | es |
dc.creator | Jet Contributors | es |
dc.creator | García Muñoz, Manuel | es |
dc.date.accessioned | 2020-07-20T14:36:02Z | |
dc.date.available | 2020-07-20T14:36:02Z | |
dc.date.issued | 2018-02 | |
dc.identifier.citation | Vries, P.C.d., Luce, T.C., Bae, Y.S., Gerhardt, S., Gong, X., Jet Contributors, y García Muñoz, M. (2018). Multi-machine analysis of termination scenarios with comparison to simulations of controlled shutdown of ITER discharges. Nuclear Fusion, 58 (2), 1-13. https://doi.org/10.1088/1741-4326/aa9c4c. | |
dc.identifier.issn | 1741-4326 | es |
dc.identifier.uri | https://hdl.handle.net/11441/99664 | |
dc.description.abstract | To improve our understanding of the dynamics and control of ITER terminations, a study has
been carried out on data from existing tokamaks. The aim of this joint analysis is to compare
the assumptions for ITER terminations with the present experience basis. The study examined
the parameter ranges in which present day devices operated during their terminations, as
well as the dynamics of these parameters. The analysis of a database, built using a selected
set of experimental termination cases, showed that, the H-mode density decays slower than
the plasma current ramp-down. The consequential increase in fGW limits the duration of the
H-mode phase or result in disruptions. The lower temperatures after the drop out of H-mode
will allow the plasma internal inductance to increase. But vertical stability control remains
manageable in ITER at high internal inductance when accompanied by a strong elongation
reduction. This will result in ITER terminations remaining longer at low q (q95 ~ 3) than
most present-day devices during the current ramp-down. A fast power ramp-down leads
to a larger change in βp at the H–L transition, but the experimental data showed that these are manageable for the ITER radial position control. The analysis of JET data shows that
radiation and impurity levels significantly alter the H–L transition dynamics. Self-consistent
calculations of the impurity content and resulting radiation should be taken into account when
modelling ITER termination scenarios. The results from this analysis can be used to better
prescribe the inputs for the detailed modelling and preparation of ITER termination scenarios | es |
dc.description.sponsorship | DoE Awards DE-FC02-99ER54512 | es |
dc.description.sponsorship | DoE Awards DE-AC02- 76CH03073 | es |
dc.description.sponsorship | DoE Awards DE-FC02-04ER54698 | es |
dc.description.sponsorship | EURATOM 633053 | es |
dc.format | application/pdf | es |
dc.format.extent | 14 p. | es |
dc.language.iso | eng | es |
dc.publisher | IOP Publishing | es |
dc.relation.ispartof | Nuclear Fusion, 58 (2), 1-13. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Plasma control | es |
dc.subject | Termination scenario | es |
dc.subject | Tokamak operation | es |
dc.subject | ITER | es |
dc.title | Multi-machine analysis of termination scenarios with comparison to simulations of controlled shutdown of ITER discharges | 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 | DE-FC02-99ER54512 | es |
dc.relation.projectID | DE-AC02- 76CH03073 | es |
dc.relation.projectID | DE-FC02-04ER54698 | es |
dc.relation.projectID | 633053 | es |
dc.relation.publisherversion | https://doi.org/10.1088/1741-4326/aa9c4c | es |
dc.identifier.doi | 10.1088/1741-4326/aa9c4c | es |
dc.contributor.group | Universidad de Sevilla. RNM138: Física Nuclear Aplicada | es |
dc.journaltitle | Nuclear Fusion | es |
dc.publication.volumen | 58 | es |
dc.publication.issue | 2 | es |
dc.publication.initialPage | 1 | es |
dc.publication.endPage | 13 | es |