| Paper | Title | Page |
|---|---|---|
| TU3IODN03 | Modeling Techniques for Design and Analysis of Superconducting Accelerator Magnets | 77 |
|
||
Superconducting magnets for particle accelerators are complex devices requiring the use of sophisticated modeling techniques to predict their performance. A complete description of the magnet behavior can only be obtained through a multi-physics approach which combines magnetic, mechanical, and electrical-thermal models. This approach is essential in particular for the next generation of magnets, which will likely implement strain sensitive conductors like Nb3Sn and will handle forces significantly larger than in the present LHC dipoles. The design of high field superconducting magnets has benefited from the integration between CAD, magnetic, and structural analysis tools allowing a precise reproduction of the magnet 3D geometry and a detailed analysis of the three-dimensional strain in the superconductor. In addition, electrical and thermal models have made possible investigating the quench initiation process and the thermal and stress conditions of the coil during the propagation of a quench. We present in this paper an overview of the integrated design approach and we report on simulation techniques aimed to predict and reproduce magnet behavior from assembly to quench. |
||
| TU3IODN05 | Transient, Large-Scale 3D Finite Element Simulations of the SIS100 Magnet | 83 |
|
||
Numerical simulations are frequently used in the design, optimization and commissioning phase of accelerator components. Strict requirements on the accuracy as well as the complex structure of such devices lead to challenges regarding the numerical simulations in 3D. In order to capture all relevant details of the geometry and possibly strongly localized electromagnetic effects, large numerical models are often unavoidable. The use of parallelization strategies in combination with higher-order finite-element methods offers a possibility to account for the large numerical models while maintaining moderate simulation times as well as high accuracy. Using this approach, the magnetic properties of the SIS100 magnets designated to operate within the Facility of Antiproton and Ion Research (FAIR) at the GSI Helmholtzzentrum für Schwerionenforschung GmbH (GSI) in Darmstadt, are calculated. Results for eddy-current losses under time-varying operating conditions as well as field quality considerations are reported. |