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Optimization of COMPASS-U Support Structure
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SYSNO ASEP 0572121 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Optimization of COMPASS-U Support Structure Author(s) Fang, J. (US)
Šesták, David (UFP-V) RID
Ficker, Ondřej (UFP-V) ORCID
Titus, P. (US)
Vondráček, Petr (UFP-V) RID, ORCIDNumber of authors 5 Source Title IEEE Transactions on Plasma Science. - : Institute of Electrical and Electronics Engineers - ISSN 0093-3813
Roč. 50, č. 11 (2022), s. 4318-4323Number of pages 6 s. Language eng - English Country US - United States Keywords Compass Upgrade (COMPASS-U) ; optimization ; sliding joint ; support structure ; toroidal field (TF) coil Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) Method of publishing Limited access Institutional support UFP-V - RVO:61389021 UT WOS 000886873200001 EID SCOPUS 85141639694 DOI 10.1109/TPS.2022.3218542 Annotation The global support structure for Compass Upgrade (COMPASS-U) employs many bolted and pinned components to improve the manufacturability of the whole structures. This is a departure from other designs used for highly loaded tokamaks, like Alcator C-Mod which used large forgings. Modeling of the numerous connections and interfaces was a challenge. This article will describe how to optimize the C-frame support structure with the goal to eliminate differential displacements at those interfaces and, importantly, minimize toroidal mutual displacement at the sliding joint of the toroidal field (TF) coils. The global support structure consists of 16 C-frames, and it can be simplified as a 1/8th cyclic symmetry model due to the eight vertical rods mounting that connect bottom CS and PF1-3 assemblies to the C-frames. Structure variants with different connection webs between two neighboring C-frames have been analyzed. The preloading of bolts can be split into several preload substeps to simulate the real assembly process of the COMPASS-U support structure. The TF crown and the wedge plate can be further improved to become a solid part to better hold the TF coils. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2024 Electronic address https://ieeexplore.ieee.org/document/9946975
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