Speaker
Description
Simulations of particle beam dynamics in electron accelerators need to account for both internal space charge effects and transient electromagnetic waves scattered at chamber walls. Commonly, these effects are treated separately using very different simulation techniques. We have developed a coupling procedure to account for both effects simultaneously by using a scattered field formulation. Here, we combine two field solvers optimized to simulate either the internal beam dynamics assuming free space or the transient electromagnetic wave propagation.
Previously, the coupling procedure was restricted to quasi-static beam behavior, as is sufficient for linear movement and emission from the gun. In this contribution we extend the approach to account for scattered synchrotron radiation wakefields from bent trajectories. We present computational studies of the scattered CSR effect created in bunch compressors, specifically the BC0 of the European XFEL. No restrictions are imposed methodologically on the surrounding geometry or on the flight path of the beam. Hence, our approach is much more general than CSR models used in the past, which assumed for example pre-defined trajectories in between two parallel plates and rigid bunches. At the same time, due to the de-coupled solvers, our method allows to compute particle-particle CSR fields inside the bunch using free-space assumptions, which reduces modeling complexity significantly.
| In which format do you inted to submit your paper? | LaTeX |
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