Measuring the Polarized Cosmic Microwave Background with ACTPol

Laura Newburgh, Dunlap Fellow

The Cosmic Microwave Background (CMB) has been an important probe of early Universe cosmology. Measurements of the polarized CMB are poised to map the signature of large scale structure in the CMB and provide constraints on the sum of the neutrino masses and the primordial helium abundance, among other things. In this AID, Newburgh will give some background in CMB measurement techniques, and discuss the instrumentation for ACTPol, a new polarization sensitive receiver on the Atacama Cosmology Telescope (ACT).