Overview and future plans for SPT-SLIM

Barry, Peter S. 2026. Overview and future plans for SPT-SLIM. Proceedings of SPIE PC1415 10.1117/12.3104999

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Abstract

The Shirokoff Line Intensity Mapper (SLIM) is a millimeter-wave line-intensity mapping experiment developed for the South Pole Telescope (SPT). SPT-SLIM serves as both a technical and scientific pathfinder, demonstrating the feasibility and in-field performance of multi-pixel superconducting filterbank spectrometers for future mm-LIM surveys. SPT-SLIM was commissioned at the SPT during the 2024–2025 austral summer. The focal plane comprises nine dual-polarization pixels coupled to an ortho-mode transducer, with each polarization fed to an R = 100 thin-film microstrip filterbank covering the 2 mm window (120–180 GHz). We present an overview of the instrument, including detector design and characterization, highlights from commissioning, and principal on-sky results from the Year 1 deployment. We also report on ongoing upgrades and performance of the enhanced focal plane in preparation for the upcoming Year 2 season.

Item Type:	Short Communication
Date Type:	Publication
Status:	Published
Schools:	Schools > Physics and Astronomy Schools > Physical, Chemical & Environmental Sciences
Additional Information:	Article number: PC1415603 Presentation video available from the publisher's page
Publisher:	Society of Photo-optical Instrumentation Engineers
ISSN:	0277-786X
Related URLs:	https://www.spiedigitallibrary.org/confe...
Last Modified:	27 Aug 2026 15:49
URI:	https://orca.cardiff.ac.uk/id/eprint/189217

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