In Situ Performance of the Low Frequency Array for Advanced ACTPol

In Situ Performance of the Low Frequency Array for Advanced ACTPol

The AdvancedAtacama Cosmology Telescope Polarimeter (AdvACT) [1] is an upgrade for the Atacama Cosmology Telescope using Transition Edge Sensor (TES) detector arrays to measure cosmic microwave background (CMB) temperature and polarization anisotropies in multiple frequencies. The low frequency (LF)...

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Veröffentlicht in:IEEE transactions on applied superconductivity 2021-08, Vol.31 (5), p.1-4
Hauptverfasser: Li, Yaqiong, Austermann, Jason E., Beall, James A., Bruno, Sarah Marie, Choi, Steve K., Cothard, Nicholas F., Crowley, Kevin T., Duff, Shannon M., Ho, Shuay-Pwu Patty, Golec, Joseph E., Hilton, Gene C., Hasselfield, Matthew, Hubmayr, Johannes, Koopman, Brian J., Lungu, Marius, McMahon, Jeff, Niemack, Michael D., Page, Lyman A., Salatino, Maria, Simon, Sara M., Staggs, Suzanne T., Stevens, Jason R., Ullom, Joel N., Vavagiakis, Eve M., Wang, Yuhan, Wollack, Edward J., Xu, Zhilei
Format: Artikel
Sprache:eng
Schlagworte:
Big Bang theory
Bolometers
Cosmic microwave background
Cosmology
Detectors
Electronics and Electrical Engineering
Extraterrestrial measurements
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Low frequencies
Physics
Polarimeters
Sensor arrays
Superconducting detectors
Synchrotron radiation
Synchrotrons
Telescopes
Temperature measurement
Time constant
Time measurement
transition edge sensor
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Beschreibung
Zusammenfassung:The AdvancedAtacama Cosmology Telescope Polarimeter (AdvACT) [1] is an upgrade for the Atacama Cosmology Telescope using Transition Edge Sensor (TES) detector arrays to measure cosmic microwave background (CMB) temperature and polarization anisotropies in multiple frequencies. The low frequency (LF) array was deployed early 2020. It consists of 292 TES bolometers observing in two bands centered at 27 GHz and 39 GHz. At these frequencies, it is sensitive to synchrotron radiation from our galaxy as well as to the CMB, and complements the AdvACT arrays operating at 90, 150 and 230 GHz. We present the initial LF array on-site characterization, including the time constant, optical efficiency and array sensitivity.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2021.3063334