Simulation of the optical system in the GroundBIRD telescope

Yonggil Jo; Jihoon Choi; Makoto Hattori; Shunsuke Honda; Tomonaga Tanaka; Miku Tsuji; Eunil Won; Kyungmin Lee

doi:10.1364/AO.488636

Simulation of the optical system in the GroundBIRD telescope

Yonggil Jo, Jihoon Choi, Makoto Hattori, Shunsuke Honda, Tomonaga Tanaka, Miku Tsuji, Eunil Won, Kyungmin Lee

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

GroundBIRD is a ground-based telescope for measuring the polarization of cosmic microwave background radiation, and it is soon to be operational at the Teide Observatory. The GroundBIRD telescope employs Mizuguchi–Dragone dual reflectors and 161 kinetic inductance detectors coupled with single polarization antennas as photon detectors. We present the results of our optical simulation on the pointing direction, stray light response, and influence of the blackbody radiation from the baffle. We also find that the power of the baffle radiation incident on the detectors is reduced by 99.95% when corrugated feed horns are coupled to the detectors.

Original language	English
Pages (from-to)	5369-5378
Number of pages	10
Journal	Applied optics
Volume	62
Issue number	20
DOIs	https://doi.org/10.1364/AO.488636
Publication status	Published - 2023 Jul

Bibliographical note

Funding Information:
Acknowledgment. This paper was partially supported by the Korea University Research Grant. We are partially supported by high-speed KREONET provided by KISTI.

Publisher Copyright:
© 2023 Optica Publishing Group.

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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10.1364/AO.488636

Cite this

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abstract = "GroundBIRD is a ground-based telescope for measuring the polarization of cosmic microwave background radiation, and it is soon to be operational at the Teide Observatory. The GroundBIRD telescope employs Mizuguchi–Dragone dual reflectors and 161 kinetic inductance detectors coupled with single polarization antennas as photon detectors. We present the results of our optical simulation on the pointing direction, stray light response, and influence of the blackbody radiation from the baffle. We also find that the power of the baffle radiation incident on the detectors is reduced by 99.95% when corrugated feed horns are coupled to the detectors.",

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AU - Jo, Yonggil

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AU - Hattori, Makoto

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AU - Tanaka, Tomonaga

AU - Tsuji, Miku

AU - Won, Eunil

AU - Lee, Kyungmin

N1 - Funding Information: Acknowledgment. This paper was partially supported by the Korea University Research Grant. We are partially supported by high-speed KREONET provided by KISTI. Publisher Copyright: © 2023 Optica Publishing Group.

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Simulation of the optical system in the GroundBIRD telescope

Abstract

Bibliographical note

ASJC Scopus subject areas

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