CMB systematics and calibration focus workshop

Session

8. methods: instrumentation 4

2 Dec 2020, 10:45

Remote access (Kavli IPMU, Kashiwa, Japan)

41. Simulations of systematic effects arising from cosmic rays in the LiteBIRD space telescope, and effects on the measurements of CMB B modes.

Prof. Samantha Stever (Okayama University/Kavli IPMU)

02/12/2020, 10:45

LiteBIRD is an upcoming JAXA-led cosmology space mission which has the scientific goal of measuring polarised CMB B-modes. LiteBIRD will fly at an L2 orbit, and thus will be subject to cosmic rays owing to the radiative environment. We present an end-to-end simulator for evaluating the effect of cosmic rays on the science outcomes of the LiteBIRD space mission, taking into account the...

42. HWP development for LiteBIRD low-frequency telescope

Dr Yuki Sakurai (Kavli IPMU)

02/12/2020, 11:10

LiteBIRD low-frequency telescope (LFT) employs a polarization modulation unit (PMU) based on a continuously rotating half-wave plate (HWP) at the telescope aperture. The PMU significantly suppresses 1/f noise and mitigates differential systematics. Therefore, the control and calibration of PMU intrinsic systematics are critical to achieving the scientific goal of LiteBIRD. The LFT PMU consists...

43. A Cryogenic Half Wave Plate Rotator for the Simons Observatory Small Aperture Telescopes

Dr Peter Ashton (UC Berkeley / LBNL / Kavli IPMU)

02/12/2020, 11:35

Located in the Atacama Desert of Chile, the Simons Observatory consists of one Large Aperture Telescope (LAT) and 3 Small Aperture Telescopes (SATs). The latter of these are optimized to observe the polarization in the CMB at large angular scales ( 30 < ℓ < 300), and as such we require a high degree of stability in our observations. To accomplish this we employ rapidly rotating sapphire...

44. Impact of instrumental systematic effects on component separation and large scale B-modes measurements

Dr Clara Vergès (Center for Astrophysics | Harvard & Smithsonian)

02/12/2020, 12:00

The next generation of CMB polarisation experiments needs to have sufficient sensitivity and frequency coverage to detect and characterise the primordial B-modes signal, and to distinguish it from foregrounds contamination. This requires the deployment of detectors arrays of many thousands of multichroic detectors, along with new technologies for polarisation modulation, antennas, readout,...

45. Free discussions

02/12/2020, 12:25