Design Study of Vacuum Vessel Concepts for COMPASS-U Tokamak

0531274 - ÚFP 2021 RIV US eng J - Journal Article
Patel, Nisarg - Hromádka, Jakub - Šesták, David - Havlíček, Josef - Balner, Vojtěch - Veselovský, Viktor - Samec, Karel - Hron, Martin - Pánek, Radomír - Yanovskiy, Vadim - Imríšek, Martin - Peterka, Matěj - Kripner, Lukáš
Design Study of Vacuum Vessel Concepts for COMPASS-U Tokamak.
IEEE Transactions on Plasma Science. Roč. 48, č. 6 (2020), s. 1452-1456, č. článku 8974261. ISSN 0093-3813. E-ISSN 1939-9375
R&D Projects: GA MŠMT(CZ) EF16_019/0000768
Institutional support: RVO:61389021
Keywords : compass-u * coupled field analysis * plasma disruption * vacuum vessel (VV)
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 1.222, year: 2020
Method of publishing: Limited access
https://ieeexplore.ieee.org/document/8974261

COMPASS upgrade (COMPASS-U) is a high-magnetic field, medium-sized tokamak with higherature (< 500 °C) operation. The scientific program is aimed to address the topics of plasma exhaust, liquid metals, enhanced confinement modes, and edge plasma physics. The plasma current is up to 2 MA and the toroidal magnetic field is up to 5 T. Therefore, plasma disruptions can produce large electromagnetic forces on the vacuum vessel (VV) and other conducting structures. This article presents the study of different VV design concepts, which were considered during the COMPASS-U conceptual design phase. This article describes the electromagnetic forces exerted during plasma disruption, higherature operation requirements, and other design constraints. INCONEL 625 is selected as a reference material for VVs. FE simulations of the 45° sector of the vacuum vessel were carried out for various load combinations. This article summarizes the wall thickness optimization that limits the vessel deformation and minimizes the stress in the shell. The results are broken down into different categories of stress according to the ASME code and compared with material limits.
Permanent Link: http://hdl.handle.net/11104/0309962