Campuses:
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| imagerteleconnotes20170828 [2017/08/28 12:44] – created hanany | imagerteleconnotes20170828 [2017/09/11 14:28] (current) – kyoung | ||
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| __Agenda: | __Agenda: | ||
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| - | * Scan Angles (Kris) | + | * {{:: |
| - | * Noise model (Karl) | + | * Noise model {{:: |
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| + | __Notes:__ | ||
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| + | pre meeting comments: | ||
| + | * Roger working on getting FDM power consumption and 1/f characteristics from Matt Dobbs. | ||
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| + | | ||
| + | * flow chart indicates various areas of work and | ||
| + | * Preliminary, | ||
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| + | Noise Model (Karl) | ||
| + | * White noise level only. | ||
| + | * NEPs and NET have been calculated | ||
| + | * Readout was from EBEX, more information of readout system is needed for estimation of noise in near future | ||
| + | * Photon correlation noise = 1 | ||
| + | - probably needs to be investigated | ||
| + | - different for space and ground-based missions | ||
| + | * Thermal power law index n: 2 is more proper | ||
| + | * Zodiacal light might be included | ||
| + | - negligible in terms of loading from simulation (Jacques) | ||
| + | - galaxy also negligible in terms of loading | ||
| + | * 10 ms bolo time constant does NOT matter here | ||
| + | * P_readout > P_photon at lowest bands near 20 GHz | ||
| + | * Next steps: | ||
| + | - go from single detector —> multi-chroic —> full focal plane | ||
| + | - Roger to use his model to calculate noise and cross check on 1 week timescale | ||
| + | * 1 / f needs to be modeled as well | ||
| + | - Roger will lead collection of information, | ||
| + | - Julian has machinery to simulate given a noise spectrum. | ||
| + | * correlated noise will need more inputs | ||
| + | - data from Plank for satellite related issues | ||
| + | - data from SPT, BICEP, etc for crosstalk numbers. | ||
| + | * for TDM capacitance of wiring is critical to limit noise | ||
| + | - what are key points for FDM? | ||
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| + | * basic model of single pixel with completely smooth scan. | ||
| + | * ability to reconstruct polarization maps looks reasonable, but Kris not convinced | ||
| + | - more complete models with multiple detectors, and a plan for how to combine them is needed. | ||
| + | - some of the has been done for CORE and LightBIRD. | ||
| + | - Kris to look into these papers | ||
| + | - Jacques to ask European community what they can contribute and what time availability they have. ETA 1 week. | ||
| + | - Kris-Jacques will meet Sept. 18-19 to discuss face-to-face. | ||