Anderson, A. J., Ade, P. A. R. ![]() ![]() |
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Abstract
SPT-3G is a polarization-sensitive receiver, installed on the South Pole Telescope, that measures the anisotropy of the cosmic microwave background (CMB) from degree to arcminute scales. The receiver consists of ten 150-mm-diameter detector wafers, containing a total of ∼16,000 ∼16,000 transition-edge sensor (TES) bolometers observing at 95, 150, and 220 GHz. During the 2018–2019 austral summer, one of these detector wafers was replaced by a new wafer fabricated with Al–Mn TESs instead of the Ti/Au design originally deployed for SPT-3G. We present the results of in-laboratory characterization and on-sky performance of this Al–Mn wafer, including electrical and thermal properties, optical efficiency measurements, and noise-equivalent temperature. In addition, we discuss and account for several calibration-related systematic errors that affect measurements made using frequency-domain multiplexing readout electronics.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Publisher: | Springer Verlag |
ISSN: | 0022-2291 |
Date of First Compliant Deposit: | 5 December 2019 |
Date of Acceptance: | 8 November 2019 |
Last Modified: | 24 Nov 2024 20:45 |
URI: | https://orca.cardiff.ac.uk/id/eprint/127351 |
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