Astro Seminar: "Cosmology Large Angular Scale Surveyor (CLASS)"

Mon, 01/16/2017 - 13:00 - 14:00
Zhilei Xu (Johns Hopkins University)

Cosmology Large Angular Scale Surveyor (CLASS) is an array of telescopes to observe Cosmic Microwave Background (CMB) in Chile. CLASS will make large angular scale CMB polarization measurements in frequency bands at 40 GHz, 90 GHz, 150 GHz and 220 GHz. The five-year CLASS survey will constrain the tensor-to-scalar ratio at the 0.01 level, and also provide more information on reionization, the sum of neutrino mass and the Galactic interstellar medium. In my talk, I will introduce the science and design of CLASS experiment. I will also talk about the development of the optical filter and telescope mount systems that I have worked on, along with some preliminary results from the first 40 GHz telescope.

David Rittenhouse Laboratory, 4C8