Energy acceptance and on momentum aperture optimization for the Sirius project

8th International Particle Accelerator Conference

Dester, P.S.^1 ; Sá, F.H.^1 ; Liu, L.^1

Brazilian Synchrotron Light Laboratory (LNLS), Campinas, Brazil^1

关键词: Betatron oscillations;    Energy acceptances;    Multi-objective genetic algorithm;    Non linear;    Objective functions;    Quadrupoles;    Search spaces;    Touschek lifetime;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/874/1/012068/pdf
DOI  :  10.1088/1742-6596/874/1/012068

来源: IOP

【 摘 要 】

A fast objective function to calculate Touschek lifetime and on momentum aperture is essential to explore the vast search space of strength of quadrupole and sextupole families in Sirius. Touschek lifetime is estimated by using the energy aperture (dynamic and physical), RF system parameters and driving terms. Non-linear induced betatron oscillations are considered to determine the energy aperture. On momentum aperture is estimated by using a chaos indicator and resonance crossing considerations. Touschek lifetime and on momentum aperture constitute the objective function, which was used in a multi-objective genetic algorithm to perform an optimization for Sirius.