The baseline mission configuration will evolve with time; this page records the baseline at any epoch.
Latest Update: V4.0/4.1 - Aug. 1, 2018
The sheet with band definitions and noise (4.0 and 4.1) has both Required values (4.1) and Current Best Estimates (4.0).
Provenance
January 2018 - Based on the V3 focal plane considered by the first TeamX review, simplified to uniformly-sized single-pixel hexagonal wafers for initial simulation-based studies.
July 2018 - Table with number of detectors was updated. Focal plane figure was not updated, so is even more wrong then it initially was.
Instrument - Detectors (this has the requirements, v4.1; for current best estimate check v4.0 in the excel sheet above)
| Band | Frequency | Bandwidth | Beam FWHM | NET | f_knee | Exponent |
|---|---|---|---|---|---|---|
| (GHz) | (GHz) | (arcmin) | (uK_CMB) | (mHz) | α | |
| 1 | 21.0 | 5.2 | 38.4 | 143 | 10 | 1 |
| 2 | 25.0 | 6.3 | 32.9 | 131 | 10 | 1 |
| 3 | 30.0 | 7.5 | 28.3 | 80.7 | 10 | 1 |
| 4 | 36.0 | 9.0 | 23.6 | 73.9 | 10 | 1 |
| 5 | 43.2 | 10.8 | 22.2 | 58.7 | 10 | 1 |
| 6 | 51.8 | 13.0 | 18.4 | 54.0 | 10 | 1 |
| 7 | 62.2 | 15.6 | 12.8 | 86.3 | 10 | 1 |
| 8 | 74.6 | 18.7 | 10.7 | 80.9 | 10 | 1 |
| 9 | 89.6 | 22.4 | 9.5 | 50.3 | 10 | 1 |
| 10 | 107.5 | 26.9 | 7.9 | 48.0 | 10 | 1 |
| 11 | 129.0 | 32.3 | 7.4 | 39.1 | 10 | 1 |
| 12 | 154.8 | 38.7 | 6.2 | 38.5 | 10 | 1 |
| 13 | 185.8 | 46.5 | 4.3 | 79.8 | 10 | 1 |
| 14 | 222.9 | 55.7 | 3.6 | 91.2 | 10 | 1 |
| 15 | 267.5 | 66.9 | 3.2 | 64.0 | 10 | 1 |
| 16 | 321.0 | 80.3 | 2.6 | 85.4 | 10 | 1 |
| 17 | 385.2 | 96.3 | 2.5 | 93.9 | 10 | 1 |
| 18 | 462.2 | 115.6 | 2.1 | 183 | 10 | 1 |
| 19 | 554.7 | 138.7 | 1.5 | 647 | 10 | 1 |
| 20 | 665.6 | 166.4 | 1.3 | 2388 | 10 | 1 |
| 21 | 798.7 | 199.7 | 1.1 | 13388 | 10 | 1 |
Note: PSD(f) = NET^2 * (f^α + f_knee^α) / (f^α + f_min^α)
Instrument - Focal Plane
| Wafer Size | Focal Plane Size | Plate Scale | Focal Plane FOV |
|---|---|---|---|
| (cm) | (cm) | (degrees/cm) | (degrees) |
| 5 | 45 | 0.27 | 12.15 |
| Wafer | Count | Pixels/Wafer | Pixels | Bands | Detectors/Band | Detectors/pixel | Sampling Rate (Hz) |
|---|---|---|---|---|---|---|---|
| A | 10 | 6 | 60 | 1, 3, 5 | 120 | 360 | 45 |
| B | 14 | 7 | 98 | 2, 4, 6 | 196 | 588 | 55 |
| C | 18 | 20 | 360 | 7, 9, 11 | 720 | 2160 | 136 |
| D | 12 | 43 | 516 | 8, 10, 12 | 1032 | 3096 | 163 |
| E | 3 | 160 | 480 | 13, 15, 17 | 960 | 2880 | 403 |
| F | 3 | 150 | 450 | 14, 16, 18 | 900 | 2700 | 480 |
| GHI | 1 | 200 | 200 | 19, 20, 21 | 400 | 1200 | 917 |
Observation
| Parameter | Value |
|---|---|
| Precession Angle (α) | 26 degrees |
| Precession Period (T_prec) | 10 hours |
| Spin Angle (β) | 69 degrees |
| Spin Period (T_spin) | 1 minute |
| Duration | 5 years |
| CryoCycle Period | 1 day |
| CryoCycle Duration | 0 minutes |
| HWP Period (T_hwp) | N/A |
References