@inproceedings{64e1e32f9a5a491e95614c0deeb61b34,
title = "Characterization of AlMn TES impedance, noise, and optical efficiency in the first 150 mm multichroic array for Advanced ACTPol",
abstract = "The Advanced ACTPol (AdvACT) upgrade to the Atacama Cosmology Telescope features large arrays of multichroic pixels consisting of two orthogonal-polarization pairs of superconducting bolometers at two observing frequency bands. We present measurements of the detector properties and noise data in a subset of a fielded multichroic array of AlMn transition-edge sensor (TES) detectors. In this array, the distribution of critical temperature Tc across detectors appears uniform at the percent level. The measured noise-equivalent power (NEP) distributions over \textasciitilde{} 1200 detectors are consistent with expectations. We find median NEPs of 4.0×10-17 √Hz for low-band detectors and 6.2×10-17√Hz for high-band detectors under covered-window telescope test conditions with optical loading comparable to observing with precipitable water vapor \textasciitilde{} 0.5 mm. Lastly, we show the estimated detector optical efficiency, and demonstrate the ability to perform optical characterization over hundreds of detectors at once using a cryogenic blackbody source.",
author = "Crowley, \{Kevin T.\} and Choi, \{Steve K.\} and Jeffrey Kuan and Austermann, \{Jason A.\} and Beall, \{James A.\} and Rahul Datta and Duff, \{Shannon M.\} and Gallardo, \{Patricio A.\} and Matthew Hasselfield and Henderson, \{Shawn W.\} and Ho, \{Shuay Pwu P.\} and Koopman, \{Brian J.\} and Niemack, \{Michael D.\} and Maria Salatino and Simon, \{Sara M.\} and Staggs, \{Suzanne T.\} and Wollack, \{Edward J.\}",
note = "Publisher Copyright: {\textcopyright} 2016 SPIE.; Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII ; Conference date: 28-06-2016 Through 01-07-2016",
year = "2016",
doi = "10.1117/12.2231999",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Jonas Zmuidzinas and Holland, \{Wayne S.\}",
booktitle = "Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII",
address = "United States",
}