학술논문
In Situ Performance of the Low Frequency Array for Advanced ACTPol
Document Type
Periodical
Author
Li, Y.; Austermann, J.E.; Beall, J.A.; Bruno, S.M.; Choi, S.K.; Cothard, N.F.; Crowley, K.T.; Duff, S.M.; Ho, S.P.; Golec, J.E.; Hilton, G.C.; Hasselfield, M.; Hubmayr, J.; Koopman, B.J.; Lungu, M.; McMahon, J.; Niemack, M.D.; Page, L.A.; Salatino, M.; Simon, S.M.; Staggs, S.T.; Stevens, J.R.; Ullom, J.N.; Vavagiakis, E.M.; Wang, Y.; Wollack, E.J.; Xu, Z.
Source
IEEE Transactions on Applied Superconductivity IEEE Trans. Appl. Supercond. Applied Superconductivity, IEEE Transactions on. 31(5):1-4 Aug, 2021
Subject
Language
ISSN
1051-8223
1558-2515
2378-7074
1558-2515
2378-7074
Abstract
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.