Modeling of microbunching instability and its mitigation

by Dr Ji Qiang (BNL)

Friday 6 Sept 2024, 15:00 → 17:00 Europe/Zurich

WBGB/019

Abstract:
The microbunching instability in high brightness linear accelerator based
x-ray FEL facilities can cause significant electron beam quality degradation and result in poorer FEL radiation performance. Accurate modeling of this effect is important for the design and operation of these FEL facilities.
In this talk, we will introduce the physical mechanism of the instability
and discuss computational methods and tools to model this instability and its mitigation.

Bio:
Dr. Ji Qiang is a senior scientist at Lawrence Berkeley National Laboratory
and a fellow of the American Physical Society. He has worked on computational accelerator physics for more than twenty years and is the main developer of several open source beam dynamics codes Impact-T/Impact-Z, EBLT, and BeamBeam3D to simulate high brightness and colliding beams in linear and circular accelerators. Recently, he developed an open source parallel variable population multi-objective optimizer, PVPmoo, for accelerator design optimization.