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Performance of Al-Mn Transition-Edge Sensor Bolometers in SPT-3G

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 transition-edge sensor...

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Published in:arXiv.org 2019-07
Main Authors: Anderson, A J, Ade, P A R, Ahmed, Z, Avva, J S, Barry, P S, R Basu Thakur, Bender, A N, Benson, B A, Bryant, L, Byrum, K, Carlstrom, J E, Carter, F W, Cecil, T W, Chang, C L, H -M Cho, Cliche, J F, Cukierman, A, de Haan, T, Denison, E V, Ding, J, Dobbs, M A, Dutcher, D, Everett, W, Ferguson, K R, Foster, A, J Fu, Gallicchio, J, Gambrel, A E, Gardner, R W, Gilbert, A, Groh, J C, Guns, S, Guyser, R, Halverson, N W, Harke-Hosemann, A H, Harrington, N L, Henning, J W, Hilton, G C, Holzapfel, W L, Howe, D, Huang, N, Irwin, K D, Jeong, O B, Jonas, M, Jones, A, Khaire, T S, Kofman, A M, Korman, M, Kubik, D L, Kuhlmann, S, C -L Kuo, Lee, A T, Leitch, E M, Lowitz, A E, Meyer, S S, Michalik, D, Montgomery, J, Nadolski, A, Natoli, T, Nguyen, H, Noble, G I, Novosad, V, Padin, S, Pan, Z, Paschos, P, Pearson, J, Posada, C M, Quan, W, Rahlin, A, Riebel, D, Ruhl, J E, Sayre, J T, Shirokoff, E, Smecher, G, Sobrin, J A, Stark, A A, Stephen, J, Story, K T, Suzuki, A, Thompson, K L, Tucker, C, Vale, L R, Vanderlinde, K, Vieira, J D, Wang, G, Whitehorn, N, Yefremenko, V, Yoon, K W, Young, M R
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Language:English
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Summary: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 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-lab 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.
ISSN:2331-8422
DOI:10.48550/arxiv.1907.11976