Difference between revisions of "Delensing sensitivity - updated sensitivities, beams, TT noise"

From CMB-S4 wiki
Jump to navigationJump to search
Line 201: Line 201:
 
| Wafers/tube || 4 || 4 || 4 || 4 || 4 || 4 || 4
 
| Wafers/tube || 4 || 4 || 4 || 4 || 4 || 4 || 4
 
|-
 
|-
−
| Wafer NET (uK-rts) || 77.43 || 63.74 || 41.01 || 15.55 || 14.37 || 20.88 || 49.46
+
| Wafer NET (uK-rts) || 92.94 || 64.94 || 41.46 || 15.50 || 14.34 || 25.84 || 61.32
 
|-
 
|-
−
| Band NET (uK-rts) || 38.72 || 22.54 || 14.50 || 2.08 || 1.92 || 7.38 || 17.49
+
| Band NET (uK-rts) || 46.47 || 22.96 || 14.66 || 2.07 || 1.92 || 9.14 || 21.68
 
|-
 
|-
 
|f_year || 0.70 || 0.70 || 0.70 || 0.70 || 0.70 || 0.70 || 0.70
 
|f_year || 0.70 || 0.70 || 0.70 || 0.70 || 0.70 || 0.70 || 0.70
Line 212: Line 212:
 
|-
 
|-
 
| efficiency || 0.39 || 0.39 || 0.39 || 0.39 || 0.39 || 0.39 || 0.39
 
| efficiency || 0.39 || 0.39 || 0.39 || 0.39 || 0.39 || 0.39 || 0.39
−
|-
 
 
|}
 
|}
  
Line 220: Line 219:
 
! Frequency (GHz) !! 20 !! 27 !! 39 !! 93 !! 145 !! 225 !! 278
 
! Frequency (GHz) !! 20 !! 27 !! 39 !! 93 !! 145 !! 225 !! 278
 
|-
 
|-
−
| Beam FWHM (arcmin) || 10.0 || 7.4 || 5.1 || 2.2 || 1.4 || 1.0 || 0.9
+
| Beam FWHM (arcmin) || 11.0 || 8.4 || 5.8 || 2.5 || 1.6 || 1.1 || 1.0
 
|-
 
|-
−
|noise T (uK-arcmin) || 8.67 || 5.05 || 3.25 || 0.47 || 0.43 || 1.65 || 3.92
+
|noise T (uK-arcmin) || 10.41 || 5.14 || 3.28 || 0.46 || 0.43 || 2.05 || 4.85
 
|-
 
|-
−
|l_knee T || 700 || 700 || 700 || 700 || 700 || 700 || 700
+
|l_knee T || 1200 || 1200 || 1200 || 1200 || 1900 || 2100 || 2100
 
|-
 
|-
−
|exponent T || -2.7 || -2.7 || -2.7 || -2.6 || -2.2 || -2.2 || -2.2
+
|exponent T || -4.2 || -4.2 || -4.2 || -4.2 || -4.1 || -3.9 || -3.9
 
|-
 
|-
−
|noise E (uK-arcmin) || 12.26 || 7.14 || 4.59 || 0.66 || 0.61 || 2.34 || 5.54
+
|noise E (uK-arcmin) || 14.72 || 7.27 || 4.64 || 0.66 || 0.61 || 2.89 || 6.87
 
|-
 
|-
 
|l_knee E || 150 || 150 || 150 || 150 || 200 || 200 || 200
 
|l_knee E || 150 || 150 || 150 || 150 || 200 || 200 || 200
Line 234: Line 233:
 
|exponent E || -2.7 || -2.7 || -2.7 || -2.6 || -2.2 || -2.2 || -2.2
 
|exponent E || -2.7 || -2.7 || -2.7 || -2.6 || -2.2 || -2.2 || -2.2
 
|-
 
|-
−
|noise B (uK-arcmin) || 12.26 || 7.14 || 4.59 || 0.66 || 0.61 || 2.34 || 5.54
+
|noise B (uK-arcmin) || 14.72 || 7.27 || 4.64 || 0.66 || 0.61 || 2.89 || 6.87
 
|-
 
|-
 
|l_knee B || 150 || 150 || 150 || 150 || 200 || 200 || 200
 
|l_knee B || 150 || 150 || 150 || 150 || 200 || 200 || 200
 
|-
 
|-
 
|exponent B || -2.7 || -2.7 || -2.7 || -2.6 || -2.2 || -2.2 || -2.2
 
|exponent B || -2.7 || -2.7 || -2.7 || -2.6 || -2.2 || -2.2 || -2.2
−
|-
 
 
|}
 
|}
  

Revision as of 08:32, 19 June 2020

This posting compares forecasts for different configurations of the delensing LAT. It is an update to the earpier posting [[]]. The new configurations are taken from the third tab of this spreadsheet. The efficiencies are taken from this analysis. The shape of the noise in multipole space (specifically the values of l_knee and power-law exponent) come from achieved SPT performance as documented on the wiki page Delensing Lat Noise Shape Prediction.


Summary

Frequency (GHz) A_L (quadratic) A_L (iterative) sigma(r) no decorr. RF
V3R0 0.20 0.075 3.8e-4
V3R0 LF+ 0.20 0.079 3.9e-4
V3R0 MF+ 0.19 0.071 3.7e-4
V3R0 HF+ 0.20 0.081 4.0e-4
V3R0 25 0.19 0.068 3.6e-4
V3R0 MF+ 25 0.19 0.064 3.5e-4

This table summarizes the expected level of lensing residual and sigma(r) for the different delensing LAT configurations combined with the DSR configuration for the SATs.

Preliminary results for joint LAT and SAT analysis

Frequency (GHz) A_L (iterative) sigma(r) no decorr. RF
V3R0 0.075
V3R0 LF+ 0.079
V3R0 MF+ 0.071
V3R0 HF+ 0.081
V3R0 25 0.068
V3R0 MF+ 25 0.064

This table summarizes the expected level of lensing residual and sigma(r) for a preliminary joint analysis of delensing LAT and SATs. The underlying assumption is that EE LAT data and BB LAT data above l=300 are used to delens the LAT and SAT data below l=300. The delensed LAT and SAT data below l=300 is then used to place constraints on r.

At present, it assumes the same hit maps and weights for both surveys, which is likely suboptimal for the LAT survey. Furthermore, it currently uses a rough approximation for the LAT transfer functions, which should be improved.

Survey specifications

The survey duration is assumed to be 7 years, and the hits map is taken to be pole deep v1 described here

Duration (yrs) 7
fsky_signal (%) 1.93
fsky_noise (%) 2.88
fsky_cross (%) 2.45

SAT specifications

The forecasts of sigma(r) assume the DSR SAT configuration. The expected noise levels for this survey are

Frequency (GHz) 20 30 40 85 95 145 155 220 270
Beam FWHM (arcmin) 11.0 72.8 72.8 25.5 22.7 25.5 22.7 13.0 13.0
noise T (uK-arcmin) 10.41 5.64 7.14 1.41 1.24 2.71 2.90 7.50 12.85
l_knee T 1200 150 150 150 150 230 230 230 230
exponent T -4.2 -4.4 -4.4 -4.4 -4.4 -3.8 -3.8 -3.8 -3.8
noise E (uK-arcmin) 14.72 3.74 4.73 0.93 0.82 1.25 1.34 3.48 8.08
l_knee E 150 60 60 60 60 65 65 65 65
exponent E -2.7 -2.2 -2.2 -2.2 -2.2 -3.1 -3.1 -3.1 -3.1
noise B (uK-arcmin) 14.72 3.53 4.46 0.88 0.78 1.23 1.34 3.48 5.97
l_knee B 150 60 60 60 60 60 60 60 60
exponent B -2.7 -1.7 -1.7 -1.7 -1.7 -3.0 -3.0 -3.0 -3.0

V3R0

The instrument is characterized by

Frequency (GHz) 20 27 39 93 145 225 278
Tubes 1 2 2 12 12 4 4
Wafers/tube 4 4 4 4 4 4 4
Wafer NET (uK-rts) 92.94 64.94 41.46 15.50 14.34 25.84 61.32
Band NET (uK-rts) 46.47 22.96 14.66 2.24 2.07 6.46 15.33
f_year 0.70 0.70 0.70 0.70 0.70 0.70 0.70
f_scan 0.80 0.80 0.80 0.80 0.80 0.80 0.80
f_pass 0.69 0.69 0.69 0.69 0.69 0.69 0.69
efficiency 0.39 0.39 0.39 0.39 0.39 0.39 0.39

This leads to the following expected performance

Frequency (GHz) 20 27 39 93 145 225 278
Beam FWHM (arcmin) 11.0 8.4 5.8 2.5 1.6 1.1 1.0
noise T (uK-arcmin) 10.41 5.14 3.28 0.50 0.46 1.45 3.43
l_knee T 1200 1200 1200 1200 1900 2100 2100
exponent T -4.2 -4.2 -4.2 -4.2 -4.1 -3.9 -3.9
noise E (uK-arcmin) 14.72 7.27 4.64 0.71 0.66 2.05 4.85
l_knee E 150 150 150 150 200 200 200
exponent E -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2
noise B (uK-arcmin) 14.72 7.27 4.64 0.71 0.66 2.05 4.85
l_knee B 150 150 150 150 200 200 200
exponent B -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2

V3R0 LF+

The instrument is characterized by

Frequency (GHz) 20 27 39 93 145 225 278
Tubes 1 4 4 11 11 3 3
Wafers/tube 4 4 4 4 4 4 4
Wafer NET (uK-rts) 92.94 64.94 41.46 15.50 14.34 25.84 61.32
Band NET (uK-rts) 46.47 16.23 10.37 2.34 2.16 7.46 17.70
f_year 0.70 0.70 0.70 0.70 0.70 0.70 0.70
f_scan 0.80 0.80 0.80 0.80 0.80 0.80 0.80
f_pass 0.69 0.69 0.69 0.69 0.69 0.69 0.69
efficiency 0.39 0.39 0.39 0.39 0.39 0.39 0.39

This leads to the following expected performance

Frequency (GHz) 20 27 39 93 145 225 278
Beam FWHM (arcmin) 11.0 8.4 5.8 2.5 1.6 1.1 1.0
noise T (uK-arcmin) 10.41 3.64 2.32 0.52 0.48 1.67 3.96
l_knee T 1200 1200 1200 1200 1900 2100 2100
exponent T -4.2 -4.2 -4.2 -4.2 -4.1 -3.9 -3.9
noise E (uK-arcmin) 14.72 5.14 3.28 0.74 0.68 2.36 5.61
l_knee E 150 150 150 150 200 200 200
exponent E -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2
noise B (uK-arcmin) 14.72 5.14 3.28 0.74 0.68 2.36 5.61
l_knee B 150 150 150 150 200 200 200
exponent B -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2

V3R0 MF+

The instrument is characterized by

Frequency (GHz) 20 27 39 93 145 225 278
Tubes 1 2 2 14 14 2 2
Wafers/tube 4 4 4 4 4 4 4
Wafer NET (uK-rts) 92.94 64.94 41.46 15.50 14.34 25.84 61.32
Band NET (uK-rts) 46.47 22.96 14.66 2.07 1.92 9.14 21.68
f_year 0.70 0.70 0.70 0.70 0.70 0.70 0.70
f_scan 0.80 0.80 0.80 0.80 0.80 0.80 0.80
f_pass 0.69 0.69 0.69 0.69 0.69 0.69 0.69
efficiency 0.39 0.39 0.39 0.39 0.39 0.39 0.39

This leads to the following expected performance

Frequency (GHz) 20 27 39 93 145 225 278
Beam FWHM (arcmin) 11.0 8.4 5.8 2.5 1.6 1.1 1.0
noise T (uK-arcmin) 10.41 5.14 3.28 0.46 0.43 2.05 4.85
l_knee T 1200 1200 1200 1200 1900 2100 2100
exponent T -4.2 -4.2 -4.2 -4.2 -4.1 -3.9 -3.9
noise E (uK-arcmin) 14.72 7.27 4.64 0.66 0.61 2.89 6.87
l_knee E 150 150 150 150 200 200 200
exponent E -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2
noise B (uK-arcmin) 14.72 7.27 4.64 0.66 0.61 2.89 6.87
l_knee B 150 150 150 150 200 200 200
exponent B -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2

V3R0 HF+

The instrument is characterized by

Frequency (GHz) 20 27 39 93 145 225 278
Tubes 1 2 2 10 10 6 6
Wafers/tube 4 4 4 4 4 4 4
Wafer NET (uK-rts) 77.43 63.74 41.01 15.55 14.37 20.88 49.46
Band NET (uK-rts) 38.72 22.54 14.50 2.46 2.27 4.26 10.10
f_year 0.70 0.70 0.70 0.70 0.70 0.70 0.70
f_scan 0.80 0.80 0.80 0.80 0.80 0.80 0.80
f_pass 0.69 0.69 0.69 0.69 0.69 0.69 0.69
efficiency 0.39 0.39 0.39 0.39 0.39 0.39 0.39


This leads to the following expected performance

Frequency (GHz) 20 27 39 93 145 225 278
Beam FWHM (arcmin) 10.0 7.4 5.1 2.2 1.4 1.0 0.9
noise T (uK-arcmin) 8.67 5.05 3.25 0.55 0.51 0.95 2.26
l_knee T 700 700 700 700 700 700 700
exponent T -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2
noise E (uK-arcmin) 12.26 7.14 4.59 0.78 0.72 1.35 3.20
l_knee E 150 150 150 150 200 200 200
exponent E -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2
noise B (uK-arcmin) 12.26 7.14 4.59 0.78 0.72 1.35 3.20
l_knee B 150 150 150 150 200 200 200
exponent B -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2

V3R0 25

The instrument is characterized by

Frequency (GHz) 20 27 39 93 145 225 278
Tubes 1 2 2 12 12 4 4
Wafers/tube 4 4 4 4 4 4 4
Wafer NET (uK-rts) 69.25 57.01 36.68 13.91 12.85 18.68 44.24
Band NET (uK-rts) 34.62 20.16 12.97 2.01 1.85 4.67 11.06
f_year 0.70 0.70 0.70 0.70 0.70 0.70 0.70
f_scan 0.80 0.80 0.80 0.80 0.80 0.80 0.80
f_pass 0.69 0.69 0.69 0.69 0.69 0.69 0.69
efficiency 0.39 0.39 0.39 0.39 0.39 0.39 0.39


This leads to the following expected performance

Frequency (GHz) 20 27 39 93 145 225 278
Beam FWHM (arcmin) 10.0 7.4 5.1 2.2 1.4 1.0 0.9
noise T (uK-arcmin) 7.75 4.51 2.90 0.45 0.42 1.05 2.48
l_knee T 700 700 700 700 700 700 700
exponent T -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2
noise E (uK-arcmin) 10.97 6.38 4.11 0.64 0.59 1.48 3.50
l_knee E 150 150 150 150 200 200 200
exponent E -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2
noise B (uK-arcmin) 10.97 6.38 4.11 0.64 0.59 1.48 3.50
l_knee B 150 150 150 150 200 200 200
exponent B -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2

V3R0 MF+ 25

The instrument is characterized by

Frequency (GHz) 20 27 39 93 145 225 278
Tubes 1 2 2 14 14 2 2
Wafers/tube 4 4 4 4 4 4 4
Wafer NET (uK-rts) 69.25 57.01 36.68 13.91 12.85 18.68 44.24
Band NET (uK-rts) 34.62 20.16 12.97 1.86 1.72 6.60 15.64
f_year 0.70 0.70 0.70 0.70 0.70 0.70 0.70
f_scan 0.80 0.80 0.80 0.80 0.80 0.80 0.80
f_pass 0.69 0.69 0.69 0.69 0.69 0.69 0.69
efficiency 0.39 0.39 0.39 0.39 0.39 0.39 0.39


This leads to the following expected performance

Frequency (GHz) 20 27 39 93 145 225 278
Beam FWHM (arcmin) 10.0 7.4 5.1 2.2 1.4 1.0 0.9
noise T (uK-arcmin) 7.75 4.51 2.90 0.42 0.38 1.48 3.50
l_knee T 700 700 700 700 700 700 700
exponent T -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2
noise E (uK-arcmin) 10.97 6.38 4.11 0.59 0.54 2.09 4.95
l_knee E 150 150 150 150 200 200 200
exponent E -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2
noise B (uK-arcmin) 10.97 6.38 4.11 0.59 0.54 2.09 4.95
l_knee B 150 150 150 150 200 200 200
exponent B -2.7 -2.7 -2.7 -2.6 -2.2 -2.2 -2.2
Retrieved from "https://cmb-s4.uchicago.edu/wiki/index.php?title=Delensing_sensitivity_-_updated_sensitivities,_beams,_TT_noise&oldid=11516"