Modeling the quasi-optical performance of CMB astronomical interferometers

Gareth S. Curran; Marcin L. Gradziel; Créidhe O'Sullivan; J. Anthony Murphy; Andrei Korotkov; Siddharth Malu; Peter Timbie; Gregory Tucker

doi:10.1117/12.790500

18 July 2008 Modeling the quasi-optical performance of CMB astronomical interferometers

Gareth S. Curran, Marcin L. Gradziel, Créidhe O'Sullivan, J. Anthony Murphy, Andrei Korotkov, Siddharth Malu, Peter Timbie, Gregory Tucker

Author Affiliations +

Proceedings Volume 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV; 70202O (2008) https://doi.org/10.1117/12.790500
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

The Millimeter-Wave Bolometric Interferometer (MBI) is a ground-based instrument designed to measure the polarization anisotropies of the Cosmic Microwave Background (CMB) and contains a number of quasi-optical components, including a complex back-to-back system of corrugated feed-horn antennas. In this paper we use MBI as an example to demonstrate the existing modeling techniques and as a focus to develop extended modeling capabilities. The software we use to model this system targets the millimeter and sub-millimeter region of the electromagnetic spectrum and has been extended to efficiently model the performance of back-to-back corrugated horns embedded in larger optical systems. This allows the calculation of the coupling of radiation from the sky to the detector array through a back-to-back horn feed system.

Citation Download Citation

Gareth S. Curran, Marcin L. Gradziel, Créidhe O'Sullivan, J. Anthony Murphy, Andrei Korotkov, Siddharth Malu, Peter Timbie, and Gregory Tucker "Modeling the quasi-optical performance of CMB astronomical interferometers", Proc. SPIE 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV, 70202O (18 July 2008); https://doi.org/10.1117/12.790500

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