Advances in Multiphysics Modeling for Parallel Finite-Element Code Suite ACE3P

Developed by SLAC, the advanced computational electromagnetics three-dimensional parallel (ACE3P) code suite is a comprehensive set of parallel finite-element codes for multiphysics modeling of particle accelerators. Running on massively parallel computer platforms for high fidelity and high accuracy simulation, ACE3P enables rapid virtual prototyping of accelerator and radio frequency (RF) component design, optimization, and analysis. Recent advances of ACE3P have been focused on the implementation of advanced numerical algorithms, enhancement of multiphysics capabilities, and integration of ACE3P with other particle beams and plasmas codes toward end-to-end simulations in accelerators, and improvement of code performance on the state-of-the-art high-performance computing (HPC) platforms for large-scale RF modeling in accelerator applications and beyond. In this article, we will present a nonlinear electromagnetic (EM) eigensolver for damping calculation of resonant modes for cavities coupled with waveguides, the thermal solver for accurate evaluation of heat loads in superconducting RF (SRF) cavity power coupler, the elastic solver for investigation of SRF cavity cryomodule (CM) bowing due to thermal effect, the frequency-domain mechanical solver for studying SRF cavity mechanical oscillation modes, the particle tracking code for dark current simulation in SRF CM using a hybrid MPI+OpenMP parallel programming model, and the time-domain solver for high-fidelity modeling of EM wave propagation for powering midfield medical devices in human body. All the simulations have been performed on the computing resources at the National Energy Research Scientific Computing Center, and the impact of HPC on multiphysics modeling will be discussed.