PROTOCALC: an artificial calibrator source for CMB telescopes

Gabriele Coppi; Giulia Conenna; Sofia Savorgnano; Felipe Carrero; Rolando Dünner Planella; Nicholas Galitzki; Federico Nati; Mario Zannoni

doi:10.1117/12.2628312

31 August 2022 PROTOCALC: an artificial calibrator source for CMB telescopes

Gabriele Coppi, Giulia Conenna, Sofia Savorgnano, Felipe Carrero, Rolando Dünner Planella, Nicholas Galitzki, Federico Nati, Mario Zannoni

Author Affiliations +

Proceedings Volume 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI; 1219015 (2022) https://doi.org/10.1117/12.2628312
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

Cosmic Microwave Background experiments need to measure polarization properties of the incoming radiation very accurately to achieve their scientific goals. As a result of that, it is necessary to properly characterize these instruments. However, there are not natural sources that can be used for this purpose. For this reason, we developed the PROTOtype CALibrator for Cosmology, PROTOCALC, which is a calibrator source designed for the 90 GHz band of these telescopes. This source is purely polarized and the direction of the polarization vector is known with an accuracy better than 0.1°. This source flew for the first time in May 2022 showing promising result.

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Gabriele Coppi, Giulia Conenna, Sofia Savorgnano, Felipe Carrero, Rolando Dünner Planella, Nicholas Galitzki, Federico Nati, and Mario Zannoni "PROTOCALC: an artificial calibrator source for CMB telescopes", Proc. SPIE 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI, 1219015 (31 August 2022); https://doi.org/10.1117/12.2628312

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