MAD - Modelling-Aided-Design of a tokamak magnet system

• Luigi Muzzi (ENEA)

Room: Energy Center Complex, multi-physics modelling undeniably plays a fundamental role in the design of superconducting magnet systems, as that for a tokamak reactor. Although a preliminary estimation and conceptual design can be drafted based on experience and analytical formulations, a higher-level confidence can only be gained by numerical modelling and analyses, that provide insight into design choices, allow a wider exploration of parameters space, and reduce design margins, that often result from over-simplified assumptions. The modelling-aided design of all coil components is discussed, considering as a case study that of the Divertor Tokamak Test (DTT) facility, currently under construction at ENEA. The performance evaluation of the superconducting strands and of the high-current CICCs, as well as the design of the coil winding pack and structures, all rely heavily on electro-magnetic, thermal-hydraulic, and mechanical numerical modeling, as will be shown for example for the DTT Toroidal Field (TF) and Central Solenoid (CS) coil components.

The role of systems modelling in manufacturing, commissioning and operation of tokamak reactors

• Alfredo Portone (F4E)

Room: Energy Center The aim of this contribution is to illustrate the role of computational models during the lifecycle of tokamak systems and components beyond their design phase. At first we discuss the use of high-fidelity modelling during component manufacturing to resolve by simulation, if functional tests are not possible or too costly, the likely impact of non-conformities on in-service performances and lifetime assessment. Then we provide some examples of how the measurements carried out during acceptance tests and/or integrated commissioning are key to calibrate the computational models developed during system design in view of machine operation. The case for computational modelling development is also strengthen by analysing their key use during machine assembly, licensing and operation.