Letters of Intent
LOIs spanning multiple areas area listed under both with the relevant aspect(s) specified.
Detectors & Readout
Detectors
1. File:DOE 4Lab LOIs detectors.pdf
2. File:CMBS4-R&D LOI Feedhorn Optimization.pdf
3a. File:Halverson CMB-S4 R and D funding LOI 2018-10-05.pdf (Lenslet-coupled arrays)
6. File:LOI CMBS4 Electromagnetic Design.pdf
7. File:LOI coherent polarimeters.pdf
Readout
9. File:DOE 4Lab LOIs readout.pdf
10. File:LOI FDM.pdf
12. File:McGill S4 RandD LoI.pdf
13. File:RFSoC readout for frequency multiplexing.pdf
35. File:UCSanDiego Readout LOI.pdf
Fabrication
14. File:DOE 4Lab LOIs fabrication.pdf
Testing
15. File:DOE 4Lab LOIs testing.pdf
16. File:CMBS4-R&D LOI ReflectiveNDFs.pdf
3b. File:Halverson CMB-S4 R and D funding LOI 2018-10-05.pdf (Beam-mapper)
Optics
18. File:BNL UMich SLAC LOI.pdf
19. File:CMB-S4 R&D LOI 2018.pdf
20. File:LOI Broadband Cryogenic Anti-Reflection Coatings and Optics for CMB-S4.pdf
21. File:LOI ARC.pdf
22. File:LOI HWP.pdf
23. File:LOI optical test and BK leverage.pdf
LAT
24. File:Large Receiver CMBS4 LOI-v2.pdf
25. File:LAToptics 20181005 v2.pdf
26. File:LOI Large telescope at Pole.pdf
27. File:LOI Ground pickup.pdf
SAT
28. File:SAT LOI.pdf
Sites & Infrastructure
Data Acquisition & Control
Data Management
33a. File:LOI for CMB-S4 r Forecast Simulations.pdf (Map-based systematics simulations)
Science Analyses
33b. File:LOI for CMB-S4 r Forecast Simulations.pdf (Delensing & foreground modeling)
