학술논문
Microwave multiplexing on the Keck Array
Document Type
Working Paper
Author
Cukierman, Ari; Ahmed, Zeeshan; Henderson, Shawn; Young, Edward; Yu, Cyndia; Barkats, Denis; Brown, David; Chaudhuri, Saptarshi; Cornelison, James; D'Ewart, John M.; Dierickx, Marion; Dober, Bradley J.; Dusatko, John; Fatigoni, Sofia; Filippini, Jeff P.; Frisch, Josef C.; Haller, Gunther; Halpern, Mark; Hilton, Gene C.; Hubmayr, Johannes; Irwin, Kent D.; Karkare, Kirit S.; Karpel, Ethan; Kernasovskiy, Sarah A.; Kovac, John M.; Kovacs, Attila; Kuenstner, Stephen E.; Kuo, Chao-Lin; Li, Dale; Mates, John A. B.; Smith, Stephen; Germaine, Tyler St.; Ullom, Joel N.; Vale, Leila R.; Van Winkle, Daniel D.; Vasquez, Jesus; Willmert, Justin; Zeng, Lingzhen; Ade, P. A. R.; Amiri, M.; Thakur, R. Basu; Bischoff, C. A.; Bock, J. J.; Boenish, H.; Bullock, E.; Buza, V.; Cheshire, J.; Connors, J.; Crumrine, M.; Duband, L.; Hall, G.; Harrison, S.; Hildebrandt, S. R.; Hui, H.; Kang, J.; Kefeli, S.; Lau, K.; Megerian, K. G.; Moncelsi, L.; Namikawa, T.; Nguyen, H. T.; O'Brient, R.; Palladino, S.; Pryke, C.; Racine, B.; Reintsema, C. D.; Richter, S.; Schillaci, A.; Schwarz, R.; Sheehy, C. D.; Soliman, A.; Steinbach, B.; Sudiwala, R. V.; Thompson, K. L.; Tucker, C.; Turner, A. D.; Umilta, C.; Vieregg, A. G.; Wandui, A.; Weber, A. C.; Wiebe, D. V.; Wu, W. L. K.; Yang, H.; Yoon, K. W.; Zhang, C.
Source
Subject
Language
Abstract
We describe an on-sky demonstration of a microwave-multiplexing readout system in one of the receivers of the Keck Array, a polarimetry experiment observing the cosmic microwave background at the South Pole. During the austral summer of 2018-2019, we replaced the time-division multiplexing readout system with microwave-multiplexing components including superconducting microwave resonators coupled to radio-frequency superconducting quantum interference devices at the sub-Kelvin focal plane, coaxial-cable plumbing and amplification between room temperature and the cold stages, and a SLAC Microresonator Radio Frequency system for the warm electronics. In the range 5-6 GHz, a single coaxial cable reads out 528 channels. The readout system is coupled to transition-edge sensors, which are in turn coupled to 150-GHz slot-dipole phased-array antennas. Observations began in April 2019, and we report here on an initial characterization of the system performance.
Comment: 9 pages, 11 figures, Accepted by the Journal of Low Temperature Physics (Proceedings of the 18th International Workshop on Low Temperature Detectors)
Comment: 9 pages, 11 figures, Accepted by the Journal of Low Temperature Physics (Proceedings of the 18th International Workshop on Low Temperature Detectors)