Impact of bunch intensity asymmetry in colliders featuring strong beamstrahlung

• DOI: 10.48550/arxiv.2404.09012
• Publication Date: 2024-01-01
• Authors: Nguyen, Khoi Le N...; Buffat, Xavier; Kicsiny, Peter; Pieloni, Tatiana
• Keywords: Accelerator Physics (physics.acc-ph); FOS: Physical sciences; Physics - Accelerator Physics

An analytical investigation of beamstrahlung-induced blow-up in Gaussian beams with arbitrary dimensions is presented, using various approximations for the strength of the hourglass effect and crab waist scheme. The results, applied to the FCC-ee resonances, are compared with simulations and previous calculations, and relative luminosity values are also calculated. The stability of resultant conformations are analysed to rule out the existence of a flip-flop phenomenon in the longitudinal plane analogous to the well-known transverse counterpart. Implications for the top-up injection procedures are discussed, and a phenomenological model is proposed to study the transverse-longitudinal coupling in the blowup dynamics.<br/>25 pages, 13 figures<br/>