The Precursor Small Aperture Telescope (PreSAT) CMB polarimeter

Matthew A. Petroff; Zeeshan Ahmed; James J. Bock; Marion Dierickx; Sofia Fatigoni; David C. Goldfinger; Paul K. Grimes; Shawn W. Henderson; Kirit S. Karkare; John M. Kovac; Hien T. Nguyen; Scott N. Paine; Anna R. Polish; Clement Pryke; Thibault Romand; Benjamin L. Schmitt; Abigail G. Vieregg

doi:10.1117/12.3018421

16 August 2024 The Precursor Small Aperture Telescope (PreSAT) CMB polarimeter

Matthew A. Petroff, Zeeshan Ahmed, James J. Bock, Marion Dierickx, Sofia Fatigoni, David C. Goldfinger, Paul K. Grimes, Shawn W. Henderson, Kirit S. Karkare, John M. Kovac, Hien T. Nguyen, Scott N. Paine, Anna R. Polish, Clement Pryke, Thibault Romand, Benjamin L. Schmitt, Abigail G. Vieregg

Author Affiliations +

Proceedings Volume 13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII; 131022P (2024) https://doi.org/10.1117/12.3018421
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The search for the polarized imprint of primordial gravitational waves in the cosmic microwave background (CMB) as direct evidence of cosmic inflation requires exquisite sensitivity and control over systematics. The next-generation CMB-S4 project intends to improve upon current-generation experiments by deploying a significantly greater number of highly-sensitive detectors, combined with refined instrument components based on designs from field-proven instruments. The Precursor Small Aperture Telescope (PreSAT) is envisioned as an early step to this next generation, which will test prototype CMB-S4 components and technologies within an existing Bicep Array receiver, with the aim of enabling full-stack laboratory testing and early risk retirement, along with direct correlation of laboratory component-level performance measurements with deployed system performance. The instrument will utilize new 95/155 GHz dichroic dual-linear-polarization prototype detectors developed for CMB-S4, cooled to 100mK via the installation of an adiabatic demagnetization refrigerator, along with a prototype readout chain and prototype optics manufactured with wide-band anti-reflection coatings. The experience gained by integrating, deploying, and calibrating PreSAT will also help inform planning for CMB-S4 small aperture telescope commissioning, calibration, and operations well in advance of the fabrication of CMB-S4 production hardware.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Matthew A. Petroff, Zeeshan Ahmed, James J. Bock, Marion Dierickx, Sofia Fatigoni, David C. Goldfinger, Paul K. Grimes, Shawn W. Henderson, Kirit S. Karkare, John M. Kovac, Hien T. Nguyen, Scott N. Paine, Anna R. Polish, Clement Pryke, Thibault Romand, Benjamin L. Schmitt, and Abigail G. Vieregg "The Precursor Small Aperture Telescope (PreSAT) CMB polarimeter", Proc. SPIE 13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII, 131022P (16 August 2024); https://doi.org/10.1117/12.3018421

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