STEAM: A Hierarchical Co-Simulation Framework for Superconducting Accelerator Magnet Circuits

Abstract

Simulating the transient effects occurring in superconducting accelerator magnet circuits requires including the mutual electro-thermo-dynamic interaction among the circuit elements, such as power converters, magnets, and protection systems. Nevertheless, the numerical analysis is traditionally done separately for each element in the circuit, leading to possible non-consistent results. We present STEAM, a hierarchical co-simulation framework featuring the waveform relaxation method. The framework simulates a complex system as a composition of simpler, independent models that exchange information. The convergence of the coupling algorithm ensures the consistency of the solution. The modularity of the framework allows integrating models developed with both proprietary and in-house tools. The framework implements a user-customizable hierarchical algorithm to schedule how models participate to the co-simulation, for the purpose of using computational resources efficiently. As a case study, a quench scenario is co-simulated for the inner triplet circuit for the High Luminosity upgrade of the LHC at CERN.

7 pages, 14 figures

References in corpus (4)

• Optimized Field/Circuit Coupling for the Simulation of Quenches in Superconducting Magnets
• A 2-D Finite-Element Model for Electro-Thermal Transients in Accelerator Magnets
• Coupling of Magneto-Thermal and Mechanical Superconducting Magnet Models by Means of Mesh-Based Interpolation
• Application of the Waveform Relaxation Technique to the Co-Simulation of Power Converter Controller and Electrical Circuit Models

Cited by in corpus (12)

• A Coupled A-H Formulation for Magneto-Thermal Transients in High-Temperature Superconducting Magnets
• Coupling of Magneto-Thermal and Mechanical Superconducting Magnet Models by Means of Mesh-Based Interpolation
• Quasi-3D Thermal Simulation of Quench Propagation in Superconducting Magnets
• Effect of CLIQ on training of HL-LHC quadrupole magnets
• Efficient Simulation of Field/Circuit Coupled Systems with Parallelised Waveform Relaxation
• Fast Failures in the LHC and the future High Luminosity LHC*
• Modelling Conduction Cooling of Superconducting Accelerator Magnets using a Thermal Thin Shell Approximation
• Magnetodynamic Finite-Element Simulation of Accelerator Magnets
• Quasi-3-D Spectral Wavelet Method for a Thermal Quench Simulation
• Bi-Filar Coil Winding for Fast Quench Protection
• Generalized Circuit Elements
• Energy-based modeling for field-circuit coupling