AVS 66th International Symposium & Exhibition
    Vacuum Technology Division Monday Sessions
       Session VT-MoA

Paper VT-MoA3
A Multiphysics Simulation Tool for Storage Ring Vacuum System Design and Optimization

Monday, October 21, 2019, 2:20 pm, Room A213

Session: Gas Dynamics, Surface Science for Accelerators, and Ultra-Clean Vacuum Systems
Presenter: Nicholas Goldring, RadiaSoft LLC
Authors: N. Goldring, RadiaSoft LLC
Z. Wu, RadiaSoft LLC
D.L. Bruhwiler, RadiaSoft LLC
B. Nash, RadiaSoft LLC
J. Carter, Argonne National Laboratory
J.E. Lerch, Argonne National Laboratory
K.J. Suthar, Argonne National Laboratory
R. Nagler, RadiaSoft LLC
P. Den Hartog, Argonne National Laboratory
Correspondent: Click to Email
Fourth generation storage ring light sources are creating orders-of-magnitude brighter x-rays by reducing horizontal emittance via multi-bend achromats. This requires the bending magnet pole tips to be closer to the electron beam axis, which in turn requires smaller vacuum chambers. The resultant design challenges are dictated by complex and coupled physical phenomena including electromagnetic wake fields, high thermal stresses and photon stimulated desorption. To better analyze and optimize next-generation vacuum systems, the authors are developing and benchmarking a suite of COMSOL Multiphysics models, which include the production, propagation, and surface interactions of synchrotron x-rays, as well as the resulting physical phenomena specified above. These coupled physics models are benchmarked against the open source codes SynRad and MolFlow. Finally, the models are embedded within a browser-based GUI, enabling scientists and engineers to execute simulations in the cloud.