CMB systematics and calibration focus workshop

Session

4. Systematics requirement toward the next generation CMB B-mode experiment

1 Dec 2020, 10:30

Remote access (Kavli IPMU, Kashiwa, Japan)

18. Beam-Related Systematic Error Suppression for the PIXIE Polarizing Fourier Transform Spectrometer

Dr Al Kogut (NASA GSFC)

01/12/2020, 10:30

The double differential nature of PIXIE's four-port measurement mitigates beam-related systematic errors common to the two-port systems used in most CMB measurements. Systematic errors coupling unpolarized temperature gradients to a false polarized signal cancel to first order for any individual detector. This common-mode cancellation is performed optically, prior to detection, and does not...

19. Requirements for future CMB satellite missions: photometric and band-pass response calibration

Dr Tommaso Ghigna (Kavli IPMU/Univ. of Oxford)

01/12/2020, 10:55

Future experiments, like the LiteBIRD space-borne mission, aim at measuring the CMB B-mode signal with high accuracy in order to measure the tensor-to-scalar ratio r at the 10^{−3} level. I will present a study of the photometric calibration and bandpass resolution requirements to minimize the leakage of polarized Galactic foreground signals into CMB polarization maps for a multi-frequency CMB...

20. Telescope baffling design that minimizes stray light systematics for ground-based experiments, the Simons Observatory case

Dr Fred Matsuda (Kavli IPMU)

01/12/2020, 11:20

The Simons Observatory (SO) is a next generation Cosmic Microwave Background (CMB) experiment aimed to measure evidence of primordial gravitational waves and put constraints on the sum of the neutrino masses. SO is developing a high angular resolution 6 m class Large Aperture Telescope (LAT) for small angular scale measurements, and three wide field-of-view 0.42 m class Small Aperture...

21. Polarization Modulator Signal Phase Variation: The Simons Observatory Case

Dr Kevin Crowley (University of California, Berkeley)

01/12/2020, 11:45

The Simons Observatory (SO), currently under construction, will deploy one large-aperture (6 m) and four small-aperture (42 cm) telescopes to the Chajnantor Plateau of the Atacama Desert in Chile in the coming years. The small-aperture telescopes feature continuously-rotating half-wave plates (CRHWP) at cryogenic stages in order to modulate incoming polarization from the sky. In this talk, I...

22. Free discussions

01/12/2020, 12:10