TY - CPAPER AU - Marcus, G. AU - Ding, Y. AU - Emma, P. AU - Huang, Z. AU - Qiang, J. AU - Raubenheimer, T.O. AU - Venturini, M. AU - Wang, L. TI - High Fidelity Start-to-end Numerical Particle Simulations and Performance Studies for LCLS-II J2 - Proc. of FEL2015 AB - High fidelity numerical particle simulations that leverage a number of accelerator and FEL codes have been used to analyze the LCLS-II FEL performance. Together, the physics models that are included in these codes have been crucial in identifying, understanding, and mitigating a number of potential hazards that can adversely affect the FEL performance, some of which are discussed in papers submitted to this conference[*, **]. Here, we present a broad overview of the LCLS-II FEL performance, based on these start-to-end simulations, for both the soft X-ray and hard X-ray undulators including both SASE and self-seeded operational modes. PB - JACoW CY - Geneva, Switzerland SP - 342 EP - 346 KW - undulator KW - electron KW - FEL KW - simulation KW - emittance DA - 2015/12 PY - 2015 SN - 978-3-95450-134-2 DO - 10.18429/JACoW-FEL2015-TUP007 UR - http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/tup007.pdf ER -