dc.creator | Wolf, R.C. | es |
dc.creator | Ali, A. | es |
dc.creator | Alonso, A. | es |
dc.creator | Baldzuhn, J. | es |
dc.creator | Beidler, C. | es |
dc.creator | García Muñoz, Manuel | es |
dc.date.accessioned | 2020-07-30T08:56:37Z | |
dc.date.available | 2020-07-30T08:56:37Z | |
dc.date.issued | 2017-10 | |
dc.identifier.citation | Wolf, R.C., Ali, A., Alonso, A., Baldzuhn, J., Beidler, C. y García Muñoz, M. (2017). Major results from the first plasma campaign of the Wendelstein 7-X stellarator. Nuclear Fusion, 57 (10), 1-13. | |
dc.identifier.issn | 0029-5515 (impreso) | es |
dc.identifier.issn | 1741-4326 (electrónico) | es |
dc.identifier.uri | https://hdl.handle.net/11441/99976 | |
dc.description.abstract | After completing the main construction phase of Wendelstein 7-X (W7-X) and successfully
commissioning the device, first plasma operation started at the end of 2015. Integral
commissioning of plasma start-up and operation using electron cyclotron resonance heating
(ECRH) and an extensive set of plasma diagnostics have been completed, allowing initial
physics studies during the first operational campaign. Both in helium and hydrogen, plasma
breakdown was easily achieved. Gaining experience with plasma vessel conditioning,
discharge lengths could be extended gradually. Eventually, discharges lasted up to 6 s,
reaching an injected energy of 4 MJ, which is twice the limit originally agreed for the limiter
configuration employed during the first operational campaign. At power levels of 4 MW
central electron densities reached 3 × 1019 m−3
, central electron temperatures reached values
of 7 keV and ion temperatures reached just above 2 keV. Important physics studies during this
first operational phase include a first assessment of power balance and energy confinement,
ECRH power deposition experiments, 2nd harmonic O-mode ECRH using multi-pass
absorption, and current drive experiments using electron cyclotron current drive. As in many
plasma discharges the electron temperature exceeds the ion temperature significantly, these
plasmas are governed by core electron root confinement showing a strong positive electric
field in the plasma centre. | 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, 57 (10), 1-13. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Stellarator | es |
dc.subject | Magnetic confinement | es |
dc.subject | Plasma heating | es |
dc.subject | Current drive | es |
dc.title | Major results from the first plasma campaign of the Wendelstein 7-X stellarator | 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.publisherversion | https://doi.org/10.1088/1741-4326/aa770d | es |
dc.identifier.doi | 10.1088/1741-4326/aa770d | es |
dc.journaltitle | Nuclear Fusion | es |
dc.publication.volumen | 57 | es |
dc.publication.issue | 10 | es |
dc.publication.initialPage | 1 | es |
dc.publication.endPage | 13 | es |