systematicswg:telecons:2018-04-04:start
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| systematicswg:telecons:2018-04-04:start [2018/04/04 11:33] – bcrill | systematicswg:telecons:2018-04-04:start [2018/04/04 13:38] (current) – kyoung |
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| * Or possibly even just some brute force scripting to correct the problem. | * Or possibly even just some brute force scripting to correct the problem. |
| * Karl: GRASP | * Karl: GRASP |
| | * Plots prepped for TeamX, {{::grasp_results_20180318_karl.pdf| GRASP slides (Karl)}} |
| | * Basically ready with a 4pi sidelobe beam: Karl to produce a visualization |
| | * See plots below. The first 2, with 2 circles per plot, are projected such that the forward 2*pi of the beam is shown in the left-hand plot, theta = 0 at the center, and the right hand plot shows the backward 2*pi, theta = 180 at the center. The second 2 plots are the same simulation in a different projection. Note on coordinates: co-pol is the E-field in the xz plane, cross-pol is the E-field in the yz plane. Plots labeled pol X are using a beam from a feedhorn linearly polarized in the xz plane. Those labeled pol Y are from a feedhorn linearly polarized in the yz plane. |
| | * {{:systematicswg:telecons:2018-04-04:polx_corrected_4pi.png?direct&100|Pol X}} {{:systematicswg:telecons:2018-04-04:poly_corrected_4pi.png?direct&100|Pol Y}} {{:systematicswg:telecons:2018-04-04:polx_corrected_4pi_flat_projection.png?direct&100|Pol X}} {{:systematicswg:telecons:2018-04-04:poly_corrected_4pi_flat_projection.png?direct&100|Pol Y}} |
| | * Brendan to ping Julian and Jacques about various code availability / sim plans for calculating pickup |
| | * Eric: beam angle |
| | * What is the noise at low ell? he can assume white noise based on the instrumental sensitivity |
| | * Table of sims specify knee frequency in time domain, but sims need to be run |
| | * Angle errors: assumptions can be made that around 0.2 degrees |
| | * What can you do if you don't try to null EB correlations? How big a problem is it. |
| | * Check [[https://arxiv.org/abs/0912.3532|Yadav et al]]: they argue that S/N of EB correlation from a systematic will always be much larger than S/N on contamination in BB. |
| | * |
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systematicswg/telecons/2018-04-04/start.1522859620.txt.gz · Last modified: 2018/04/04 11:33 by bcrill