Free Access

Table 1

Detector requirements for the various mission concepts discussed in the text.

λ Pdet NEPph Pdet for 1 Jy Time constant 1/f knee
(μm) (fW) (fW) (ms) (Hz)

Double Fourier interferometer 25–50 0.029 6.1 4.6 0.2 1
2 3 m 5 K telescopes 50–100 0.022 3.7 2.3
0.5λ/D pixels 100–200 0.018 2.4 1.2
200–400 0.83 10 0.58

Single dish Broadband camera 30 0.053 8.5 30 30 0.1
3 m 5 K telescope 60 0.043 5.2 15
0.5λ/D pixels 120 0.030 3.3 7.4
λ/ Δλ = 3 240 0.041 2.6 3.7
400 0.27 5.2 2.2

Single dish Broadband camera 30 0.053 8.5 120 30 0.1
10 m 25 K telescope 60 0.88 24 60
0.5λ/D pixels 120 24 89 30
λ/ Δλ = 3 240 77 113 15
400 89 93 8.9

Single dish Grating spectrometer 30 9.1 × 10-5 0.35 0.052 100 0.1
3 m 5 K telescope 60 7.1 × 10-5 0.22 0.026
0.5λ/D pixels 120 5.2 × 10-5 0.13 0.013
λ/ Δλ = 1000 240 6.9 × 10-5 0.11 0.0065
400 4.8 × 10-5 0.22 0.039

Single dish Grating spectrometer 30 9.1 × 10-5 0.35 0.21 100 0.1
10 m 25 K telescope 60 1.5 × 10-4 1.0 0.1
0.5λ/D pixels 120 0.044 3.3 0.052
λ/ Δλ = 1000 240 0.13 2.6 0.026
400 0.15 5.2 0.016

CMB experiment 400 120 111 0.57 5 0.1
2 m 30 K telescope 600 110 85 0.38
1λ/D pixels 900 96 65 0.25
λ/ Δλ = 3 1400 107 54 0.16
2000 123 50 0.11
3000 129 41 0.076

Notes. On top of the requirements listed in the table, all detector systems have the common requirements of: i) a cosmic ray dead time <20% and ii) a pixel-pixel crosstalk (after data de-correlation) <−30 dB. Additionally all instruments will require on the order of several 104 of pixels.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.