In this talk I will discuss the optical modeling efforts used to inform the design of the Simons Observatory Large Aperture Telescope. I will present some general aspects of this new and exciting telescope design and review expected performance. I will discuss various techniques that we have used in the analysis of this telescope and compare those to similar work for past and current...
ArtDeco is beam-deconvolution code, designed for absolute CMB measurements.
Is has been successfully applied to beam analysis for the LFI instrument of the Planck mission up to multipole lmax=1500.
Given time-ordered data and known beam shapes as input, the code removes the effects of asymmetric beam shape, yielding as output a map with symmetrized effective beam.
In particular, the method...
Future CMB experiments will require an unprecedented control of systematics in order to constrain the B-mode polarisation power spectrum. There are a plethora of different systematics which effect the measurements of the CMB, but in this talk we shall concentrate on the effects of beam systematics resulting from optical imperfections that can lead to contamination of the observed signals. One...
One of the most powerful probes to understand the Universe’s evolution is the Cosmic Microwave Background (CMB). Lately the search for the CMB polarization B-modes has become one of the main objectives of observational cosmology, leading to active instrumental developments and to a large number of CMB experiments. Nowadays, it is widely recognised that any unambiguous detection of the B-modes...
The new generation of CMB $B$-mode experiments will reach limits of sensitivity never achieved before in order to detect the elusive primordial $B$-mode signal. However, all these efforts will be futile if we lack a tight control of the systematics. Here, we focus on the systematic that arises from the uncertainty of the polarization angles calibration. Miscalibrated polarization angles induce...
