Millimeter-wave polarimeters using kinetic inductance detectors for TolTEC and beyond

Austermann, J, E., Beall, J. A., Bryan, S. A., Dober, B., Gao, J., Hilton, G., Hubmayr, J., Mauskopf, Philip ORCID: https://orcid.org/0000-0001-6397-5516, McKenney, C. M., Simon, S. M., Ullom, J. N., Vissers, M. R. and Wilson, G. W. 2018. Millimeter-wave polarimeters using kinetic inductance detectors for TolTEC and beyond. Journal of Low Temperature Physics 193 (3-4) , pp. 120-127. 10.1007/s10909-018-1949-5

Preview

PDF - Accepted Post-Print Version Download (3MB) | Preview

Abstract

Microwave kinetic inductance detectors (MKIDs) provide a compelling path forward to the large-format polarimeter, imaging, and spectrometer arrays needed for next-generation experiments in millimeter-wave cosmology and astronomy. We describe the development of feedhorn-coupled MKID detectors for the TolTEC millimeter-wave imaging polarimeter being constructed for the 50-m Large Millimeter Telescope (LMT). Observations with TolTEC are planned to begin in early 2019. TolTEC will comprise ∼7000 ∼7000 polarization-sensitive MKIDs and will represent the first MKID arrays fabricated and deployed on monolithic 150 mm diameter silicon wafers—a critical step toward future large-scale experiments with over 10 5 105 detectors. TolTEC will operate in observational bands at 1.1, 1.4, and 2.0 mm and will use dichroic filters to define a physically independent focal plane for each passband, thus allowing the polarimeters to use simple, direct-absorption inductive structures that are impedance matched to incident radiation. This work is part of a larger program at NIST-Boulder to develop MKID-based detector technologies for use over a wide range of photon energies spanning millimeter-waves to X-rays. We present the detailed pixel layout and describe the methods, tools, and flexible design parameters that allow this solution to be optimized for use anywhere in the millimeter and sub-millimeter bands. We also present measurements of prototype devices operating in the 1.1 mm band and compare the observed optical performance to that predicted from models and simulations.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	Springer
ISSN:	0022-2291
Date of First Compliant Deposit:	25 May 2018
Date of Acceptance:	30 April 2018
Last Modified:	19 Nov 2024 22:15
URI:	https://orca.cardiff.ac.uk/id/eprint/111778

Citation Data

Cited 44 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item