Design and Assembly of SPT-3G Cold Readout Hardware
The third-generation upgrade to the receiver on the South Pole Telescope, SPT-3G, was installed at the South Pole during the 2016–2017 austral summer to measure the polarization of the cosmic microwave background. Increasing the number of detectors by a factor of 10 to ~16,000 required the multiplex...
Published in: | Journal of Low Temperature Physics |
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2022
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Online Access: | http://www.osti.gov/servlets/purl/1490481 https://www.osti.gov/biblio/1490481 https://doi.org/10.1007/s10909-018-1965-5 |
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ftosti:oai:osti.gov:1490481 2023-07-30T04:06:52+02:00 Design and Assembly of SPT-3G Cold Readout Hardware Avva, J. S. Ade, P. A. R. Ahmed, Z. Anderson, A. J. Austermann, J. E. Thakur, R. Basu Barron, D. Bender, A. N. Benson, B. A. Carlstrom, J. E. Carter, F. W. Cecil, T. Chang, C. L. Cliche, J. F. Cukierman, A. Denison, E. V. de Haan, T. Ding, J. Dobbs, M. A. Dutcher, D. Elleflot, T. Everett, W. Foster, A. Gannon, R. N. Gilbert, A. Groh, J. C. Halverson, N. W. Harke-Hosemann, A. H. Harrington, N. L. Hasegawa, M. Hattori, K. Henning, J. W. Hilton, G. C. Holzapfel, W. L. Hori, Y. Huang, N. Irwin, K. D. Jeong, O. B. Jonas, M. Khaire, T. Kofman, A. M. Korman, M. Kubik, D. Kuhlmann, S. Kuo, C. L. Lee, A. T. Lowitz, A. E. Meyer, S. S. Montgomery, J. Nadolski, A. Natoli, T. Nguyen, H. Nishino, H. Noble, G. I. Novosad, V. Padin, S. Pan, Z. Pearson, J. Posada, C. M. Rahlin, A. Rotermund, K. Ruhl, J. E. Saunders, L. J. Sayre, J. T. Shirley, I. Shirokoff, E. Smecher, G. Sobrin, J. A. Stark, A. A. Story, K. T. Suzuki, A. Tang, Q. Y. 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. 2022-05-25 application/pdf http://www.osti.gov/servlets/purl/1490481 https://www.osti.gov/biblio/1490481 https://doi.org/10.1007/s10909-018-1965-5 unknown http://www.osti.gov/servlets/purl/1490481 https://www.osti.gov/biblio/1490481 https://doi.org/10.1007/s10909-018-1965-5 doi:10.1007/s10909-018-1965-5 79 ASTRONOMY AND ASTROPHYSICS 2022 ftosti https://doi.org/10.1007/s10909-018-1965-5 2023-07-11T09:30:54Z The third-generation upgrade to the receiver on the South Pole Telescope, SPT-3G, was installed at the South Pole during the 2016–2017 austral summer to measure the polarization of the cosmic microwave background. Increasing the number of detectors by a factor of 10 to ~16,000 required the multiplexing factor to increase to 68 and the bandwidth of the frequency-division readout electronics to span 1.6–5.2 MHz. This increase necessitates low-thermal conductance, low-inductance cryogenic wiring. Our cold readout system consists of planar thin-film aluminum inductive–capacitive resonators, wired in series with the detectors, summed together, and connected to 4K SQUIDs by 10-μm -thick niobium–titanium (NbTi) broadside-coupled striplines. Here, we present an overview of the cold readout electronics for SPT-3G, including assembly details and characterization of electrical and thermal properties of the system. We report, for the NbTi striplines, values of R≤10 -4 Ω , L=21±1 nH , and C=1.47±.02 nF . Additionally, the striplines’ thermal conductivity is described by kA=6.0±0.3 T 0.92±0.04 μW mm K -1 . Finally, we provide projections for cross talk induced by parasitic impedances from the stripline and find that the median value of percentage cross talk from leakage current is 0.22 and 0.09% from wiring impedance. Other/Unknown Material South pole SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Austral South Pole Journal of Low Temperature Physics 193 3-4 547 555 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
79 ASTRONOMY AND ASTROPHYSICS |
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79 ASTRONOMY AND ASTROPHYSICS Avva, J. S. Ade, P. A. R. Ahmed, Z. Anderson, A. J. Austermann, J. E. Thakur, R. Basu Barron, D. Bender, A. N. Benson, B. A. Carlstrom, J. E. Carter, F. W. Cecil, T. Chang, C. L. Cliche, J. F. Cukierman, A. Denison, E. V. de Haan, T. Ding, J. Dobbs, M. A. Dutcher, D. Elleflot, T. Everett, W. Foster, A. Gannon, R. N. Gilbert, A. Groh, J. C. Halverson, N. W. Harke-Hosemann, A. H. Harrington, N. L. Hasegawa, M. Hattori, K. Henning, J. W. Hilton, G. C. Holzapfel, W. L. Hori, Y. Huang, N. Irwin, K. D. Jeong, O. B. Jonas, M. Khaire, T. Kofman, A. M. Korman, M. Kubik, D. Kuhlmann, S. Kuo, C. L. Lee, A. T. Lowitz, A. E. Meyer, S. S. Montgomery, J. Nadolski, A. Natoli, T. Nguyen, H. Nishino, H. Noble, G. I. Novosad, V. Padin, S. Pan, Z. Pearson, J. Posada, C. M. Rahlin, A. Rotermund, K. Ruhl, J. E. Saunders, L. J. Sayre, J. T. Shirley, I. Shirokoff, E. Smecher, G. Sobrin, J. A. Stark, A. A. Story, K. T. Suzuki, A. Tang, Q. Y. 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. Design and Assembly of SPT-3G Cold Readout Hardware |
topic_facet |
79 ASTRONOMY AND ASTROPHYSICS |
description |
The third-generation upgrade to the receiver on the South Pole Telescope, SPT-3G, was installed at the South Pole during the 2016–2017 austral summer to measure the polarization of the cosmic microwave background. Increasing the number of detectors by a factor of 10 to ~16,000 required the multiplexing factor to increase to 68 and the bandwidth of the frequency-division readout electronics to span 1.6–5.2 MHz. This increase necessitates low-thermal conductance, low-inductance cryogenic wiring. Our cold readout system consists of planar thin-film aluminum inductive–capacitive resonators, wired in series with the detectors, summed together, and connected to 4K SQUIDs by 10-μm -thick niobium–titanium (NbTi) broadside-coupled striplines. Here, we present an overview of the cold readout electronics for SPT-3G, including assembly details and characterization of electrical and thermal properties of the system. We report, for the NbTi striplines, values of R≤10 -4 Ω , L=21±1 nH , and C=1.47±.02 nF . Additionally, the striplines’ thermal conductivity is described by kA=6.0±0.3 T 0.92±0.04 μW mm K -1 . Finally, we provide projections for cross talk induced by parasitic impedances from the stripline and find that the median value of percentage cross talk from leakage current is 0.22 and 0.09% from wiring impedance. |
author |
Avva, J. S. Ade, P. A. R. Ahmed, Z. Anderson, A. J. Austermann, J. E. Thakur, R. Basu Barron, D. Bender, A. N. Benson, B. A. Carlstrom, J. E. Carter, F. W. Cecil, T. Chang, C. L. Cliche, J. F. Cukierman, A. Denison, E. V. de Haan, T. Ding, J. Dobbs, M. A. Dutcher, D. Elleflot, T. Everett, W. Foster, A. Gannon, R. N. Gilbert, A. Groh, J. C. Halverson, N. W. Harke-Hosemann, A. H. Harrington, N. L. Hasegawa, M. Hattori, K. Henning, J. W. Hilton, G. C. Holzapfel, W. L. Hori, Y. Huang, N. Irwin, K. D. Jeong, O. B. Jonas, M. Khaire, T. Kofman, A. M. Korman, M. Kubik, D. Kuhlmann, S. Kuo, C. L. Lee, A. T. Lowitz, A. E. Meyer, S. S. Montgomery, J. Nadolski, A. Natoli, T. Nguyen, H. Nishino, H. Noble, G. I. Novosad, V. Padin, S. Pan, Z. Pearson, J. Posada, C. M. Rahlin, A. Rotermund, K. Ruhl, J. E. Saunders, L. J. Sayre, J. T. Shirley, I. Shirokoff, E. Smecher, G. Sobrin, J. A. Stark, A. A. Story, K. T. Suzuki, A. Tang, Q. Y. 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. |
author_facet |
Avva, J. S. Ade, P. A. R. Ahmed, Z. Anderson, A. J. Austermann, J. E. Thakur, R. Basu Barron, D. Bender, A. N. Benson, B. A. Carlstrom, J. E. Carter, F. W. Cecil, T. Chang, C. L. Cliche, J. F. Cukierman, A. Denison, E. V. de Haan, T. Ding, J. Dobbs, M. A. Dutcher, D. Elleflot, T. Everett, W. Foster, A. Gannon, R. N. Gilbert, A. Groh, J. C. Halverson, N. W. Harke-Hosemann, A. H. Harrington, N. L. Hasegawa, M. Hattori, K. Henning, J. W. Hilton, G. C. Holzapfel, W. L. Hori, Y. Huang, N. Irwin, K. D. Jeong, O. B. Jonas, M. Khaire, T. Kofman, A. M. Korman, M. Kubik, D. Kuhlmann, S. Kuo, C. L. Lee, A. T. Lowitz, A. E. Meyer, S. S. Montgomery, J. Nadolski, A. Natoli, T. Nguyen, H. Nishino, H. Noble, G. I. Novosad, V. Padin, S. Pan, Z. Pearson, J. Posada, C. M. Rahlin, A. Rotermund, K. Ruhl, J. E. Saunders, L. J. Sayre, J. T. Shirley, I. Shirokoff, E. Smecher, G. Sobrin, J. A. Stark, A. A. Story, K. T. Suzuki, A. Tang, Q. Y. 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. |
author_sort |
Avva, J. S. |
title |
Design and Assembly of SPT-3G Cold Readout Hardware |
title_short |
Design and Assembly of SPT-3G Cold Readout Hardware |
title_full |
Design and Assembly of SPT-3G Cold Readout Hardware |
title_fullStr |
Design and Assembly of SPT-3G Cold Readout Hardware |
title_full_unstemmed |
Design and Assembly of SPT-3G Cold Readout Hardware |
title_sort |
design and assembly of spt-3g cold readout hardware |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1490481 https://www.osti.gov/biblio/1490481 https://doi.org/10.1007/s10909-018-1965-5 |
geographic |
Austral South Pole |
geographic_facet |
Austral South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
http://www.osti.gov/servlets/purl/1490481 https://www.osti.gov/biblio/1490481 https://doi.org/10.1007/s10909-018-1965-5 doi:10.1007/s10909-018-1965-5 |
op_doi |
https://doi.org/10.1007/s10909-018-1965-5 |
container_title |
Journal of Low Temperature Physics |
container_volume |
193 |
container_issue |
3-4 |
container_start_page |
547 |
op_container_end_page |
555 |
_version_ |
1772819810032287744 |