Borrill, Julian2015-01-212015-01-212015-01https://hdl.handle.net/11299/169542PowerpointSimulations play a critical role in CMB experiments, including optimizing instrument design and deployment, validating and verifying data analysis algorithms and implementations, and debiasing and uncertainty quantification of the analysis results. Generating simulation sets also poses significant challenges, both in ensuring that they faithfully reproduce the critical characteristics of an experimental dataset, and in optimizing their generating to allow for the production of very large ensembles of realizations for Monte Carlo analyses. In this talk I will describe these challenges in the context of the simulation pipeline used in support of the 2nd Planck data release, outline the resulting dataset and its possible extension to support post-Planck experiments, and comment on the developments that will be needed for the next generation of mission-class CMB experiments such as CMB-S4, LiteBIRD and COrE+.enFTPICMBPresentation