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002898866 003__ SzGeCERN
002898866 005__ 20240529202713.0
002898866 0247_ $$2DOI$$9IOP$$a10.1088/1742-6596/2687/8/082015
002898866 0247_ $$2DOI$$9JACOW$$a10.18429/JACoW-IPAC2023-WEPM070
002898866 0248_ $$aoai:cds.cern.ch:2898866$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pcerncds:CERN
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002898866 041__ $$aeng
002898866 100__ $$aAbusaif, [email protected]$$uKIT, Karlsruhe
002898866 245__ $$9IOP$$aInvestigations on NbTi superconducting racetrack coils under pulsed-current excitations
002898866 246__ $$9JACOW$$aInvestigations on NbTi superconducting racetrack coils under pulsed-current excitations
002898866 260__ $$c2024
002898866 260__ $$c2023
002898866 300__ $$a7 p
002898866 520__ $$9IOP$$aOne of the key issues in the technology of superconductors is the protection against quenches. When designing a superconductor as a magnet, a coil or even current leads, the design should be made such that the superconductor withstands all operational conditions, especially those occurring rapidly, as fast discharges or pulsed loads. A model for a superconducting racetrack coil based on NbTi winding is investigated under pulsed transport current conditions (zero external field) utilizing finite element analysis within the Simulia Opera platform. A pulse duration of a few milliseconds and a peak current exceeding 1 kA is yielded by discharging a capacitor into an RLC circuit that includes the superconductor coil as an element. A quench multi-physics analysis has been performed comprising both thermal and electromagnetic solutions. The transition to normal state and quench occurrence has agreed with the expected critical curve together with the load-line estimated for the existing coil geometry.
002898866 520__ $$9JACOW$$aOne of the key issues in the technology of superconductors is the protection against quenches. When designing a superconductor as a magnet, a coil or even current leads, the design should be made such that the superconductor withstands all operational conditions as fast discharges, pulsed loads or even rapid transient background fields.Computational modeling of pulsed-current characterization in a self-field NbTi racetrack sample coil has been performed using the finite element modelling software Opera as a step towards understanding the thermal and electromagnetic processes during a quench. The pulse was modelled to be generated by discharging a capacitor into an RLC circuit, which includes the NbTi racetrack coil as the sample under test. The coil was driven to the resistive state and the quench occurred by applying the pulse with a peak value exceeding the critical current of the sample coil.This contribution presents the results obtained from investigating a pulsed NbTi coil in a model based on an electromagnetic analysis. In addition, a comparison to the theoretical expectations derived for the damped oscillations in the pulse-driving circuit is given. Finally, the results from a coupled analysis, where both thermal and electromagnetic properties are being considered, within a quench multi-physics study are presented.
002898866 540__ $$aCC-BY-3.0$$bIOP$$uhttp://creativecommons.org/licenses/by/3.0/
002898866 540__ $$aCC-BY-4.0$$bJACOW$$uhttps://creativecommons.org/licenses/by/4.0
002898866 690C_ $$aARTICLE
002898866 690C_ $$aCERN
002898866 700__ $$aBernhard, A$$uKIT, Karlsruhe
002898866 700__ $$aBründermann, E$$uKIT, Karlsruhe
002898866 700__ $$aGancarcik, D$$uKIT, Karlsruhe$$uCERN$$vCERN, Geneva, Swizerland
002898866 700__ $$aGlamann, N$$uKIT, Karlsruhe
002898866 700__ $$aGrau, A$$uKIT, Karlsruhe
002898866 700__ $$aSaez de Jauregui, D$$uKIT, Karlsruhe
002898866 700__ $$aMüller, A-S$$uKIT, Karlsruhe
002898866 773__ $$c082015$$n8$$pJ. Phys. : Conf. Ser.$$v2687$$y2024
002898866 773__ $$cWEPM070$$pJACoW IPAC$$qIPAC2023$$v2023$$wC23-05-07$$y2023
002898866 8564_ $$82532534$$s1117187$$uhttp://cds.cern.ch/record/2898866/files/PublicationJACoW.pdf$$yFulltext
002898866 8564_ $$82532535$$s1203437$$uhttp://cds.cern.ch/record/2898866/files/PublicationIOP.pdf$$yFulltext
002898866 960__ $$a13
002898866 962__ $$b2858945$$k082015$$nvenice20230507
002898866 980__ $$aARTICLE
002898866 980__ $$aConferencePaper