Speaker
Serena Giardiello
Description
A rotating Half-Wave Plate (HWP) is included in the design of future CMB experiments, such as LiteBIRD. A realistic HWP is characterised by frequency-dependent non-idealities (i.e. efficiency, non-ideal phase
shift, cross-polarization) that are measured within a certain error. We simulate how uncertainties in the determination of the aforementioned non-idealities affect estimates of the tensor-to-scalar ratio r in a LiteBIRD-like experiment. By assuming a threshold on the acceptable level of bias $\Delta r$, we set requirements on the sensitivity that should be achieved with measurements of each non-ideal parameter.
