280 GHz Focal Plane Unit Design and Characterization for the Spider-2 Suborbital Polarimeter
We describe the construction and characterization of the 280 GHz bolometric focal plane units (FPUs) to be deployed on the second flight of the balloon-borne Spider instrument. These FPUs are vital to Spider’s primary science goal of detecting or placing an upper limit on the amplitude of the primor...
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Online Access: | http://www.osti.gov/servlets/purl/1764045 https://www.osti.gov/biblio/1764045 https://doi.org/10.1007/s10909-018-2065-2 |
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ftosti:oai:osti.gov:1764045 2023-07-30T03:57:04+02:00 280 GHz Focal Plane Unit Design and Characterization for the Spider-2 Suborbital Polarimeter Bergman, A.S. 2023-07-03 application/pdf http://www.osti.gov/servlets/purl/1764045 https://www.osti.gov/biblio/1764045 https://doi.org/10.1007/s10909-018-2065-2 unknown http://www.osti.gov/servlets/purl/1764045 https://www.osti.gov/biblio/1764045 https://doi.org/10.1007/s10909-018-2065-2 doi:10.1007/s10909-018-2065-2 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY 2023 ftosti https://doi.org/10.1007/s10909-018-2065-2 2023-07-11T10:01:11Z We describe the construction and characterization of the 280 GHz bolometric focal plane units (FPUs) to be deployed on the second flight of the balloon-borne Spider instrument. These FPUs are vital to Spider’s primary science goal of detecting or placing an upper limit on the amplitude of the primordial gravitational wave signature in the cosmic microwave background (CMB) by constraining the B-mode contamination in the CMB from Galactic dust emission. Each 280 GHz focal plane contains a $16 \times 16$ grid of corrugated silicon feedhorns coupled to an array of aluminum–manganese transition-edge sensor (TES) bolometers fabricated on 150 mm diameter substrates. In total, the three 280 GHz FPUs contain 1530 polarization-sensitive bolometers (765 spatial pixels) optimized for the low loading environment in flight and read out by time-division SQUID multiplexing. In this paper, we describe the mechanical, thermal, and magnetic shielding architecture of the focal planes and present cryogenic measurements which characterize yield and the uniformity of several bolometer parameters. The assembled FPUs have high yields, with one array as high as 95% including defects from wiring and readout. We demonstrate high uniformity in device parameters, finding the median saturation power for each TES array to be $\sim $ 3 pW at 300 mK with a less than 6% variation across each array at $1\sigma $ . These focal planes will be deployed alongside the 95 and 150 GHz telescopes in the Spider-2 instrument, slated to fly from McMurdo Station in Antarctica in December 2018. Other/Unknown Material Antarc* Antarctica SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) McMurdo Station ENVELOPE(166.667,166.667,-77.850,-77.850) Journal of Low Temperature Physics 193 5-6 1075 1084 |
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Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY |
spellingShingle |
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY Bergman, A.S. 280 GHz Focal Plane Unit Design and Characterization for the Spider-2 Suborbital Polarimeter |
topic_facet |
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY |
description |
We describe the construction and characterization of the 280 GHz bolometric focal plane units (FPUs) to be deployed on the second flight of the balloon-borne Spider instrument. These FPUs are vital to Spider’s primary science goal of detecting or placing an upper limit on the amplitude of the primordial gravitational wave signature in the cosmic microwave background (CMB) by constraining the B-mode contamination in the CMB from Galactic dust emission. Each 280 GHz focal plane contains a $16 \times 16$ grid of corrugated silicon feedhorns coupled to an array of aluminum–manganese transition-edge sensor (TES) bolometers fabricated on 150 mm diameter substrates. In total, the three 280 GHz FPUs contain 1530 polarization-sensitive bolometers (765 spatial pixels) optimized for the low loading environment in flight and read out by time-division SQUID multiplexing. In this paper, we describe the mechanical, thermal, and magnetic shielding architecture of the focal planes and present cryogenic measurements which characterize yield and the uniformity of several bolometer parameters. The assembled FPUs have high yields, with one array as high as 95% including defects from wiring and readout. We demonstrate high uniformity in device parameters, finding the median saturation power for each TES array to be $\sim $ 3 pW at 300 mK with a less than 6% variation across each array at $1\sigma $ . These focal planes will be deployed alongside the 95 and 150 GHz telescopes in the Spider-2 instrument, slated to fly from McMurdo Station in Antarctica in December 2018. |
author |
Bergman, A.S. |
author_facet |
Bergman, A.S. |
author_sort |
Bergman, A.S. |
title |
280 GHz Focal Plane Unit Design and Characterization for the Spider-2 Suborbital Polarimeter |
title_short |
280 GHz Focal Plane Unit Design and Characterization for the Spider-2 Suborbital Polarimeter |
title_full |
280 GHz Focal Plane Unit Design and Characterization for the Spider-2 Suborbital Polarimeter |
title_fullStr |
280 GHz Focal Plane Unit Design and Characterization for the Spider-2 Suborbital Polarimeter |
title_full_unstemmed |
280 GHz Focal Plane Unit Design and Characterization for the Spider-2 Suborbital Polarimeter |
title_sort |
280 ghz focal plane unit design and characterization for the spider-2 suborbital polarimeter |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1764045 https://www.osti.gov/biblio/1764045 https://doi.org/10.1007/s10909-018-2065-2 |
long_lat |
ENVELOPE(166.667,166.667,-77.850,-77.850) |
geographic |
McMurdo Station |
geographic_facet |
McMurdo Station |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
http://www.osti.gov/servlets/purl/1764045 https://www.osti.gov/biblio/1764045 https://doi.org/10.1007/s10909-018-2065-2 doi:10.1007/s10909-018-2065-2 |
op_doi |
https://doi.org/10.1007/s10909-018-2065-2 |
container_title |
Journal of Low Temperature Physics |
container_volume |
193 |
container_issue |
5-6 |
container_start_page |
1075 |
op_container_end_page |
1084 |
_version_ |
1772815756293046272 |