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Jun 23 – 27, 2025
Eckhardt Research Center
America/Chicago timezone

Laboratory Measurements of Horn-Coupled Multi-Chroic Microwave Kinetic Inductance Detector Arrays for Cosmic Microwave Background Polarimetry

Jun 23, 2025, 3:45 PM
15m
106 (KPTC)

106

KPTC

Parallel Session Parallel Session B

Speaker

Jordan Shroyer (University of Virginia; National Radio Astronomy Observatory)

Description

We will present measured noise spectra of horn-coupled microwave kinetic inductance detector (MKID) arrays. These detectors are tailored for next generation multi-kilo-pixel experiments that are designed to simultaneously characterize the polarization properties of both the cosmic microwave background (CMB) and Galactic dust emission. Each array element is sensitive to two polarizations and two spectral bands. A horn antenna is used to feed a planar orthomode transducer, which separates the two incoming polarizations. Microstrip diplexers composed of resonant-stub band-pass filters separate the radiation into 125 to 170 GHz and 190 to 280 GHz pass bands. The millimeter-wave power is ultimately coupled to a hybrid coplanar waveguide microwave kinetic inductance detector using a novel, broadband circuit developed by our collaboration. Our laboratory measurements focus on sensitivity (NET) and low-frequency noise.

Would you be interested in presenting a poster if the conference is oversubcribed? Yes

Primary author

Jordan Shroyer (University of Virginia; National Radio Astronomy Observatory)

Co-authors

Dr Bradley Johnson (University of Virginia) Dr Philip Mauskopf (Arizona State University)

Presentation materials