GFA Accelerator Seminars

Dynamic modelling of 2G-HTS systems

by Frederic Trillaud (LBNL)

WBGB/019 (PSI)




For a couple of decades, a future generation of insertion devices has been under consideration making use of High Temperature Superconductors. In the following talk, we propose to take a look at the latest developments in the modeling of HTS large-scale systems, in particular those based on 2G-HTS technology.
The methods use in their modeling can help magnet designers to obtain better magnetic field quality as well as designing the cryogenic system associated with the applications. Nowadays, the modeling of HTS systems relies heavily on Finite Element (FE) Analysis for its ease of use to address more complex and realistic problems.
A novel strategy to produce fast and reliable 2D simulations of HTS coils is presented. It relies on a different formulation (T-A) of the Maxwell’s equations with respect to what is normally implemented in commercial codes as well on homogenization procedures. To show the applicability of the methods, a real case study, the 32 T all-superconducting magnet (axisymmetric case) commissioned at the National High Magnetic Field laboratory, in Florida, USA, is presented. With the latest T-A formulation in conjunction with the homogenization technique, it is possible to reach "real-time" simulation on a personal computer at a fair accuracy and also to tackle 3D problems for more complex designs. The proposed techniques can be readily applied to insertion devices based on HTS bulks or HTS winding.

For details, contact Stéphane Sanfilippo