Bruno Maffei (QMW) has given us the transmission curves of the
Archeops cold filters and back to back horns (Ascii files given in annex).
The postscript figure shows the available transmission curves for
channel 1.

The following log file gives the expected sensitivity for the Trapani
flight. We see that the transmission measurements are a factor 1.5
lower than expected with the Planck assumptions.
 
 

Use the load mode 5
TRAPANI CONFIG 7.2 arcmin beams (Bruno's measurements for channel 1)

Wed Jun 2 11:13:40 1999, Use load 5
SZ, DT, dust, RJ and background power in pW
Chn1 -3.21461e-05 3.38291e-05 4.86036e-07 0.215497 0.696875
Chn2 1.55249e-06 9.73711e-05 4.73813e-06 1.09000 1.95911
Chn3 0.000213806 9.67656e-05 4.33917e-05 4.66826 8.30026
Define NPOWER normal variables to be compared with those obtained with various filters
Calibration factor for nominal wavelength and nominal width
for SZ, DT, dust, RJ, total background
(ie effective transmission)
For channel 1
0.205865 0.225927 0.264080 0.238566 0.489609
NEP_PHOTON in W/Hz1/2 (Shot, Temp and Total noise)
1.10891e-17 1.42432e-18 1.11802e-17
NEP_DET and TOT in W/Hz1/2
2.00000e-17 2.29128e-17
Conversion in mK RJ(external)/ Watts(on bolometers)
4.64044e+15
NET in mK RJ(external)/Hz1/2
0.106326
For one second, detectivity is Y_SZ, DT_T, NH_DUST, T_RJ, mJy
-5.04005e-05 4.78931e-05 33.3346 7.51835e-05 161.784
For 0.0510000 second, detectivity is Y_SZ, DT_T, NH_DUST, T_RJ, mJy
-0.000223177 0.000212074 147.608 0.000332918 716.390
CONVERSION FROM 1 mK to Y_SZ, DT_T, NH_DUST, T_RJ, MilliJy, MJy/sr
-0.000670366 0.000637016 443.376 0.00100000 2151.85 0.627103
For channel 2
0.421895 0.336163 0.357132 0.345994 0.436430
NEP_PHOTON in W/Hz1/2 (Shot, Temp and Total noise)
2.26514e-17 4.21333e-18 2.30399e-17
NEP_DET and TOT in W/Hz1/2
3.00000e-17 3.78264e-17
Conversion in mK RJ(external)/ Watts(on bolometers)
9.17434e+14
NET in mK RJ(external)/Hz1/2
0.0347032
For one second, detectivity is Y_SZ, DT_T, NH_DUST, T_RJ, mJy
0.00172287 2.74695e-05 5.64513 2.45389e-05 121.595
For 0.0510000 second, detectivity is Y_SZ, DT_T, NH_DUST, T_RJ, mJy
0.00762898 0.000121637 24.9970 0.000108660 538.430
CONVERSION FROM 1 mK to Y_SZ, DT_T, NH_DUST, T_RJ, MilliJy, MJy/sr
0.0702096 0.00111943 230.048 0.00100000 4955.17 1.44406
For channel 3
0.330405 0.333683 0.354413 0.345407 0.396989
NEP_PHOTON in W/Hz1/2 (Shot, Temp and Total noise)
5.90949e-17 1.00836e-17 5.99491e-17
NEP_DET and TOT in W/Hz1/2
4.00000e-17 7.20687e-17
Conversion in mK RJ(external)/ Watts(on bolometers)
2.14213e+14
NET in mK RJ(external)/Hz1/2
0.0154380
For one second, detectivity is Y_SZ, DT_T, NH_DUST, T_RJ, mJy
2.38348e-05 5.26636e-05 1.17442 1.09163e-05 143.141
For 0.0510000 second, detectivity is Y_SZ, DT_T, NH_DUST, T_RJ, mJy
0.000105542 0.000233198 5.20044 4.83383e-05 633.841
CONVERSION FROM 1 mK to Y_SZ, DT_T, NH_DUST, T_RJ, MilliJy, MJy/sr
0.00218341 0.00482430 107.584 0.00100000 13112.6 3.82134