Abstract
The magnetic perturbation due to the ferromagnetic test blanket modules (TBMs) may deteriorate fast ion confinement in ITER. This effect must be quantified by numerical studies in 3D. We have implemented a combined finite element method (FEM) - Biot-Savart law integrator method (BSLIM) to calculate the ITER 3D magnetic field and vector potential in detail. Unavoidable geometry simplifications changed the mass of the TBMs and ferritic inserts (FIs) up to 26%. This has been compensated for by modifying the nonlinear ferromagnetic material properties accordingly. Despite the simplifications, the computation geometry and the calculated fields are highly detailed. The combination of careful FEM mesh design and using BSLIM enables the use of the fields unsmoothed for particle orbit-following simulations. The magnetic field was found to agree with earlier calculations and revealed finer details. The vector potential is intended to serve as input for plasma shielding calculations.
| Original language | English |
|---|---|
| Pages (from-to) | 1039-1043 |
| Journal | Fusion Engineering and Design |
| Volume | 98-99 |
| DOIs | |
| Publication status | Published - 1 Oct 2015 |
| MoE publication type | A1 Journal article-refereed |
Funding
This project has received funding from Fusion for Energy (grant F4E-GRT-379 ), the Academy of Finland (project No. 259675 ), Tekes – Finnish Funding Agency for Technology and Innovation. We acknowledge the computational resources from Aalto Science-IT project, CSC – IT center for science and the International Fusion Energy Research Centre.
Keywords
- Ferritic insert
- ITER
- Magnetization
- Test Blanket Module
