Table 6.
Average weights, 
, assigned to each frequency channel from component separation and requirements on the accuracy, σΔx, needed to measure specific classes of HWP non-ideal properties x ≡ h, ζ, β.
| 100 LFT | 100 MFT | 119 MFT | 140 MFT | 166 MFT | 195 MFT | |
|---|---|---|---|---|---|---|
 |
0.043 | 0.064 | 0.179 | 0.156 | 0.206 | 0.053 |
σh
 |
0.003 | 0.003 | 0.003 | 0.002 | 0.001 | 0.001 |
| Δrh | 1.12 × 10−5 | 1.02 × 10−5 | 7.16 × 10−6 | 2.98 × 10−6 | 1.13 × 10−6 | 3.43 × 10−6 |
σβ
 |
3 | 2 | 2 | 1 | 1 | 1 |
| Δrβ | 8.06 × 10−6 | 6.60 × 10−6 | 1.83 × 10−5 | 2.27 × 10−6 | 4.50 × 10−6 | 7.79 × 10−6 |
σζ
 |
0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 |
| Δrζ | 3.82 × 10−6 | 1.72 × 10−6 | 4.34 × 10−6 | 6.95 × 10−6 | 6.36 × 10−6 | 1.70 × 10−5 |
Notes. These requirements amount to setting the bias Δr on the estimate of the tensor-to-scalar ratio, r, to below 1% the expected sensitivity from LiteBIRD, that is, Δr ≲ 10−5.
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