Design of the $\mathrm{SPT}$-$\mathrm{SLIM}$ Focal Plane: A Spectroscopic Imaging Array for the South Pole Telescope

Barry, P. S.; Anderson, A.; Benson, B.; Carlstrom, J. E.; Cecil, T.; Chang, C.; Dobbs, M.; Hollister, M.; Karkare, K. S.; Keating, G. K.; Marrone, D.; McMahon, J.; Montgomery, J.; Pan, Z.; Robson, G.; Rouble, M.; Shirokoff, E.; Smecher, G.

doi:10.1007/s10909-022-02843-4

Title: Design of the $$\mathrm{SPT}$$-$$\mathrm{SLIM}$$ Focal Plane: A Spectroscopic Imaging Array for the South Pole Telescope

Journal Article · Mon Sep 05 00:00:00 EDT 2022 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/s10909-022-02843-4· OSTI ID:1834166

^[1]; Anderson, A. ^[2];

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^[4]; Chang, C. ^[3]; Dobbs, M. ^[5]; Hollister, M. ^[2];

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^[8]; McMahon, J. ^[6]; Montgomery, J. ^[5];

^[4]; Robson, G. ^[9]; Rouble, M. ^[5]; Shirokoff, E. ^[6]; Smecher, G. ^[10]

Argonne National Laboratory (ANL), Lemont, IL (United States); University of Chicago, IL (United States). Kavli Institute for Cosmological Physics (KICP); Cardiff University, Wales (United Kingdom)
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Argonne National Laboratory (ANL), Lemont, IL (United States); University of Chicago, IL (United States). Kavli Institute for Cosmological Physics (KICP)
Argonne National Laboratory (ANL), Lemont, IL (United States)
McGill University, Montreal, QC (Canada)
University of Chicago, IL (United States). Kavli Institute for Cosmological Physics (KICP)
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
University of Arizona, Tucson, AZ (United States)
University of Chicago, IL (United States)
Three-Speed Logic, Inc., Victoria, BC (Canada)

The Summertime Line Intensity Mapper (SLIM) is a mm-wave line-intensity mapping (mm-LIM) experiment for the South Pole Telescope (SPT). The goal of SPT-SLIM is to serve as a technical and scientific pathfinder for the demonstration of the suitability and in-field performance of multi-pixel superconducting filterbank spectrometers for future mm-LIM experiments. Scheduled to deploy in the 2023-24 austral summer, the SPT-SLIM focal plane will include 18 dual-polarisation pixels, each coupled to an R = λ/Δλ = 300 thin-film microstrip filterbank spectrometer that spans the 2 mm atmospheric window (120–180 GHz). Each individual spectral channel feeds a microstrip-coupled lumped-element kinetic inductance detector, which provides the highly multiplexed readout for the 10k detectors needed for SPT-SLIM. Here, we present an overview of the preliminary design of key aspects of the SPT-SLIM focal plane array, a description of the detector architecture and predicted performance, and initial test results that will be used to inform the final design of the SPT-SLIM spectrometer array.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF)

Grant/Contract Number:: AC02-07CH11359; AST-2108763; AST-2001802; AC02-06CH11357

OSTI ID:: 1834166

Report Number(s):: FERMILAB-PUB-21-650-PPD; arXiv:2111.04633; oai:inspirehep.net:1963707; TRN: US2300135

Journal Information:: Journal of Low Temperature Physics, Vol. 209, Issue 5-6; ISSN 0022-2291

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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