External kink related sideways force on the tokamak wall
The external kink related sideways wall force is investigated on ultralow-q RFX-mod plasma discharge. Several theoretical predictions are experimentally verified. The presence of coupled kink modes is observed when the wall is subject to a sideways force. The absence of an integral electromagnetic f...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Nuclear Fusion |
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| Online Access: | https://doi.org/10.1088/1741-4326/ada36f |
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| author | D. Abate V. Yanovskiy L. Cordaro L. Pigatto V.D. Pustovitov D. Terranova P. Zanca M. Zuin |
| author_facet | D. Abate V. Yanovskiy L. Cordaro L. Pigatto V.D. Pustovitov D. Terranova P. Zanca M. Zuin |
| author_sort | D. Abate |
| collection | DOAJ |
| description | The external kink related sideways wall force is investigated on ultralow-q RFX-mod plasma discharge. Several theoretical predictions are experimentally verified. The presence of coupled kink modes is observed when the wall is subject to a sideways force. The absence of an integral electromagnetic force on the plasma is analyzed in such conditions. The dependence of sideways force on the mode growth rate is also revealed. A comparison between different theoretical predictions of the sideways force magnitude is performed for both flat-top and ramp-down phases. The results are compared with the direct calculation of sideways force provided by the ex-vessel magnetic measurements. These analyses show that the sideways force related to kink-like mode is much smaller than predicted by models that approximate the plasma as a rigid current-carrying ring or that neglect the presence of the wall. |
| format | Article |
| id | doaj-art-f3ae272d5ea14df5a1e8f99edc75b57c |
| institution | Kabale University |
| issn | 0029-5515 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Nuclear Fusion |
| spelling | doaj-art-f3ae272d5ea14df5a1e8f99edc75b57c2025-01-06T09:09:02ZengIOP PublishingNuclear Fusion0029-55152025-01-0165202602810.1088/1741-4326/ada36fExternal kink related sideways force on the tokamak wallD. Abate0https://orcid.org/0000-0002-0331-3454V. Yanovskiy1https://orcid.org/0000-0003-0568-6577L. Cordaro2https://orcid.org/0000-0002-8068-5307L. Pigatto3https://orcid.org/0000-0002-0556-0440V.D. Pustovitov4https://orcid.org/0000-0003-3801-7513D. Terranova5https://orcid.org/0000-0001-9339-283XP. Zanca6https://orcid.org/0000-0003-3208-976XM. Zuin7https://orcid.org/0000-0002-0282-2978Consorzio RFX (CNR, ENEA, INFN, Università di Padova , Acciaierie Venete SpA), C.so Stati Uniti 4, 35127 Padova, ItalyInstitute of Plasma Physics of the CAS , U Slovanky 2525/1a, Prague 182 00, Czech RepublicConsorzio RFX (CNR, ENEA, INFN, Università di Padova , Acciaierie Venete SpA), C.so Stati Uniti 4, 35127 Padova, ItalyConsorzio RFX (CNR, ENEA, INFN, Università di Padova , Acciaierie Venete SpA), C.so Stati Uniti 4, 35127 Padova, ItalyNational Research Centre ‘Kurchatov Institute’ , Pl. Kurchatova 1, Moscow 123182, Russian Federation; Moscow Institute of Physics and Technology , Institutsky lane 9, Dolgoprudny, Moscow Region 141700, Russian FederationConsorzio RFX (CNR, ENEA, INFN, Università di Padova , Acciaierie Venete SpA), C.so Stati Uniti 4, 35127 Padova, Italy; Istituto per la Scienza e la Tecnologia dei Plasmi del CNR , C.so Stati Uniti 4, 35127 Padova, ItalyConsorzio RFX (CNR, ENEA, INFN, Università di Padova , Acciaierie Venete SpA), C.so Stati Uniti 4, 35127 Padova, ItalyConsorzio RFX (CNR, ENEA, INFN, Università di Padova , Acciaierie Venete SpA), C.so Stati Uniti 4, 35127 Padova, Italy; Istituto per la Scienza e la Tecnologia dei Plasmi del CNR , C.so Stati Uniti 4, 35127 Padova, ItalyThe external kink related sideways wall force is investigated on ultralow-q RFX-mod plasma discharge. Several theoretical predictions are experimentally verified. The presence of coupled kink modes is observed when the wall is subject to a sideways force. The absence of an integral electromagnetic force on the plasma is analyzed in such conditions. The dependence of sideways force on the mode growth rate is also revealed. A comparison between different theoretical predictions of the sideways force magnitude is performed for both flat-top and ramp-down phases. The results are compared with the direct calculation of sideways force provided by the ex-vessel magnetic measurements. These analyses show that the sideways force related to kink-like mode is much smaller than predicted by models that approximate the plasma as a rigid current-carrying ring or that neglect the presence of the wall.https://doi.org/10.1088/1741-4326/ada36fwall forcesideways forcekink modedisruptionkink instability |
| spellingShingle | D. Abate V. Yanovskiy L. Cordaro L. Pigatto V.D. Pustovitov D. Terranova P. Zanca M. Zuin External kink related sideways force on the tokamak wall Nuclear Fusion wall force sideways force kink mode disruption kink instability |
| title | External kink related sideways force on the tokamak wall |
| title_full | External kink related sideways force on the tokamak wall |
| title_fullStr | External kink related sideways force on the tokamak wall |
| title_full_unstemmed | External kink related sideways force on the tokamak wall |
| title_short | External kink related sideways force on the tokamak wall |
| title_sort | external kink related sideways force on the tokamak wall |
| topic | wall force sideways force kink mode disruption kink instability |
| url | https://doi.org/10.1088/1741-4326/ada36f |
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