Seminars and Colloquia
QUBIC: The QU Bolometric Interferometer for Cosmology
by
→
Europe/Rome
248 (INFN edificio C)
248
INFN edificio C
Description
One of the most exciting challenges of modern cosmology is the search for a primordial gravitational waves. Such tensor perturbations of the fabric of spacetime are predicted to be produced at the end of inflation and to leave an imprint on the Cosmic Microwave Background polarization through the production of odd-parity patterns known as B-modes.
A number of projects throughout the world are engaged in the search fro these B-modes. We are constructing QUBIC, a novel instrumental concept based on the idea of a bolometric interferometer: combining the exquisite sensitivity of arrays of Transition-Edge-Sensors with an unprecedented ability to control instrumental systematic effects thanks to the observation of interference fringes. I will describe the QUBIC instrumental concept and technical implementation as well as the data analysis techniques we are developing that are specific to Bolometric Interferometry.
We are currently constructing the first QUBIC module, operating at 150 and 220 GHz in order to remove contamination from Galactic dust foregrounds, but we envision evolutions of QUBIC with modules at multiple frequencies in order to reach the ultimate sensitivity of a Stage-IV experiment at the ~2020 horizon.
A number of projects throughout the world are engaged in the search fro these B-modes. We are constructing QUBIC, a novel instrumental concept based on the idea of a bolometric interferometer: combining the exquisite sensitivity of arrays of Transition-Edge-Sensors with an unprecedented ability to control instrumental systematic effects thanks to the observation of interference fringes. I will describe the QUBIC instrumental concept and technical implementation as well as the data analysis techniques we are developing that are specific to Bolometric Interferometry.
We are currently constructing the first QUBIC module, operating at 150 and 220 GHz in order to remove contamination from Galactic dust foregrounds, but we envision evolutions of QUBIC with modules at multiple frequencies in order to reach the ultimate sensitivity of a Stage-IV experiment at the ~2020 horizon.