IPAC'23 - 14th International Particle Accelerator Conference

Study of the combined effect of intrabeam scattering and impedance in a low-emittance ring

WEPL141

10 May 2023, 16:30

2h

Sala Laguna

Poster Presentation MC5.D10: Beam Beam Effects Theory, Simulations, Measurements, Code Developments Wednesday Poster Session

Speakers

Gabriele Bassi (Brookhaven National Laboratory) Victor Smaluk (Brookhaven National Laboratory)

Description

Intra-beam scattering (IBS) is one of the prominent effects for low-emittance rings resulting in a significant growth of the emittance, energy spread, and bunch length. This effect is partially mitigated by the bunch lengthening caused by the longitudinal impedance. However, a significant bunch lengthening provided by higher-harmonic cavities is needed to keep the emittance low enough for achieving the designed brightness. For low-emittance lattices considered as options for the NSLS-II upgrade, we studied a combined effect of the IBS, impedance, and harmonic cavities using analytical formulae and computer simulations.