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26 August 2022 MKID array development for the SPT-3G+ focal plane
Karia Dibert, Peter Barry, Adam Anderson, Bradford Benson, Tom Cecil, Clarence Chang, Juliang Li, Zhaodi Pan, Maclean Rouble
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Proceedings Volume PC12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI; PC121900P (2022) https://doi.org/10.1117/12.2629416
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada
Abstract
We present recent designs, prototypes, and test results from the ongoing development of SPT-3G+, the fourth-generation receiver of the South Pole Telescope (SPT). SPT-3G+ will utilize single-color, dual-polarization microwave kinetic inductance detectors (MKIDs) to observe the mm/sub-mm sky at 225, 285, and 345 GHz. The SPT-3G+ camera is optimized to measure secondary anisotropies of the cosmic microwave background (CMB) and to study galaxy and cluster formation at high redshift. We review the pixel design and fabrication process and discuss the results of single and multi-pixel characterizations. We then present plans for the full SPT-3G+ MKID arrays and describe design choices made to maximize resonator quality, uniformity, and frequency placement while preserving mapping speed and limiting systematics.
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Karia Dibert, Peter Barry, Adam Anderson, Bradford Benson, Tom Cecil, Clarence Chang, Juliang Li, Zhaodi Pan, and Maclean Rouble "MKID array development for the SPT-3G+ focal plane", Proc. SPIE PC12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI, PC121900P (26 August 2022); https://doi.org/10.1117/12.2629416
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KEYWORDS
Staring arrays
Cameras
Microwave radiation
Sensors
Optical instrument design
Prototyping
Rayleigh scattering
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