Magnetostructural Calculations and Design Study of the DTT Central Solenoid

• Published in: IEEE transactions on applied superconductivity Vol. 30; no. 4; pp. 1 - 5
• Main Authors: Giannini, Lorenzo, Muzzi, Luigi, Zenobio, Aldo Di, Anemona, Alessandro, Della Corte, Antonio, Romanelli, Gherardo, Zoboli, Lorenzo, Turtu, Simonetta
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.06.2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Activation; Coils; Conductors; Finite element analysis; Finite element method; fusion reactors; Magnetic flux; Modules; Plasma currents; Solenoids; Superconducting magnets; Superconductors; Tin alloys; Tokamak devices; Toroidal magnetic fields
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2019.2962487

The Divertor Tokamak Test facility (DTT) is a project of an experimental tokamak reactor developed in Italy, in the framework of the European Fusion Roadmap. This work presents the magnetic and the structural assessment of the performance of the DTT central solenoid. The CS is the core magnet of the poloidal system and generates the magnetic flux needed to induce the plasma current. This magnet is composed of a stack of six layer-wound independently energized modules, comprised of Nb3Sn Cable-in-Conduit Conductors. To optimize the amount of superconductive material, each module is divided into two submodules. The inner- most submodule operates in a range of about 8/13.5 T, while the outer one at 6/8.5 T. The objective of the design process is to obtain a coil that is capable of providing the required magnetic performance while being structurally compliant. To address this problem, an analytical assessment has been carried out and a thoroughly parametric Finite Element Model (FEM) has been implemented.