Optical design concept of the CMB-S4 large-aperture telescopes and cameras

Journal Article · Wed Jul 20 04:00:00 UTC 2022 · TBD

OSTI ID:1882556

Gallardo, Patricio A. ^[1]; Benson, Bradford ^[2]; Carlstrom, John ^[3]; Dicker, Simon R. ^[4]; Emerson, Nick ^[5]; Gudmundsson, Jon E. ^[6]; Hills, Richard ^[7]; Limon, Michele ^[4]; McMahon, Jeff ^[8]; Niemack, Michael D. ^[9]; Nagy, Johanna M. ^[10]; Padin, Stephen ^[11]; Ruhl, John ^[12]; Simon, Sara M. ^[13]

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1. Chicago U., KICP
2. Chicago U., KICP; Chicago U., Astron. Astrophys. Ctr.; Fermilab
3. Chicago U., KICP; Chicago U., Astron. Astrophys. Ctr.; Argonne; Chicago U.; Chicago U., EFI
4. Pennsylvania U.
5. Arizona U., Astron. Dept. - Steward Observ.
6. Stockholm U.; Stockholm U., OKC
7. Cambridge U.; Cambridge U., DAMTP
8. Chicago U., KICP; Chicago U., Astron. Astrophys. Ctr.; Fermilab; Chicago U.; Chicago U., EFI
9. Cornell U.
10. Washington U., St. Louis; WUSTL
11. Caltech
12. Dortmund U.
13. Fermilab

CMB-S4 -- the next-generation ground-based cosmic microwave background (CMB) experiment - will significantly advance the sensitivity of CMB measurements and improve our understanding of the origin and evolution of the universe. CMB-S4 will deploy large-aperture telescopes fielding hundreds of thousands of detectors at millimeter wavelengths. We present the baseline optical design concept of the large-aperture CMB-S4 telescopes, which consists of two optical configurations: (i) a new off-axis, three-mirror, free-form anastigmatic design and (ii) the existing coma-corrected crossed-Dragone design. We also present an overview of the optical configuration of the array of silicon optics cameras that will populate the focal plane with 85 diffraction-limited optics tubes covering up to 9 degrees of field of view, up to $$1.1 \, \rm mm$$ in wavelength. We describe the computational optimization methods that were put in place to implement the families of designs described here and give a brief update on the current status of the design effort.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• Contributing Organization: CMB-S4
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1882556
• Report Number(s): FERMILAB-PUB-22-593-PPD; arXiv:2207.10012; oai:inspirehep.net:2120127
• Journal Information: TBD, Journal Name: TBD
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
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