@inproceedings{e4bfde438f8d4cd3b883d2c550196742,
title = "Detector fabrication development for the LiteBIRD satellite mission",
abstract = "LiteBIRD is a JAXA-led strategic Large-Class satellite mission designed to measure the polarization of the cosmic microwave background and cosmic foregrounds from 34 to 448 GHz across the entire sky from L2 in the late 2020's. The primary focus of the mission is to measure primordially generated B-mode polarization at large angular scales. Beyond its primary scientific objective LiteBIRD will generate a data-set capable of probing a number of scientific inquiries including the sum of neutrino masses. The primary responsibility of United States will be to fabricate the three flight model focal plane units for the mission. The design and fabrication of these focal plane units is driven by heritage from ground based experiments and will include both lenslet-coupled sinuous antenna pixels and horn-coupled orthomode transducer pixels. The experiment will have three optical telescopes called the low frequency telescope, mid frequency telescope, and high frequency telescope each of which covers a portion of the mission's frequency range. JAXA is responsible for the construction of the low frequency telescope and the European Consortium is responsible for the mid- and high- frequency telescopes. The broad frequency coverage and low optical loading conditions, made possible by the space environment, require development and adaptation of detector technology recently deployed by other cosmic microwave background experiments. This design, fabrication, and characterization will take place at UC Berkeley, NIST, Stanford, and Colorado University, Boulder. We present the current status of the US deliverables to the LiteBIRD mission.",
keywords = "CMB, Cosmic foregrounds, Detectors, In ation, LiteBIRD, Polarization, SPIE digital forum, Satellite, Space-mission",
author = "B. Westbrook and C. Raum and S. Beckman and Lee, {A. T.} and N. Farias and T. Sasse and A. Suzuki and E. Kane and Austermann, {J. E.} and Beall, {J. A.} and Duff, {S. M.} and J. Hubmayr and Hilton, {G. C.} and {Van Lanen}, J. and Vissers, {M. R.} and Link, {M. R.} and N. Halverson and G. Jaehnig and T. Ghinga and S. Stever and Y. Minami and Thompson, {K. L.} and M. Russell and K. Arnold and J. Seibert and M. Silva-Feaver",
note = "Funding Information: The FPSs each contain two intermediate temperature stages at 1.8 K and 300 mK between the FPUs at 100 mK and the 4.8 K telescope structures. A free-space low pass edge filter and a Focal Plane Hood (FPH) are supported by the 1.8 K stage. Aluminized thin film spans the interstage gaps to block radio frequency and residual warm thermal radiation. The requirements include a thermal budget for each stage and mechanical performance to survive launch loads and keep resonances clear of the science band while in operation. Our current baseline includes aluminum, titanium, and copper metallic parts and carbon fiber reinforced plastic inter-stage support struts. A trade-off study is in progress to determine whether struts can be designed to be able to survive Funding Information: This work is supported in Japan by ISAS/JAXA for Pre-Phase A2 studies, by the acceleration pro- gram of JAXA research and development directorate, by the World Premier International Research Center Initiative (WPI) of MEXT, by the JSPS Core-to-Core Program of A. Advanced Research Networks, and by JSPS KAKENHI Grant Numbers JP15H05891, JP17H01115, and JP17H01125. Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave ; Conference date: 14-12-2020 Through 22-12-2020",
year = "2020",
doi = "10.1117/12.2562978",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Makenzie Lystrup and Perrin, {Marshall D.}",
booktitle = "Space Telescopes and Instrumentation 2020",
}