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2a1f79a @skendrew package of input and procedure files - first commit
authored
1 ; Parameter file for the thermal properties of the pre-optics
2
3
4 ;temperatures
5 ;win_temp=tel_t ;entrance window temperature
6 wfs_em=0.15 ;emissivity of the WFS dichroic
7 pre_temp=85. ;pre-optics temperature
8 wfs_temp=pre_temp ;dichroic temperature
9
10 ;parameters for window emissivity calcs
11 n=2.4028 ;real part of refractive index @ 10.6 um
12 r=(n-1)/(n+1)
13 win_thick=1.2 ;window thickness [cm]
14
15 ;improvement factor in window transmission from anti-reflection coating - TBD
16 ar_factor=1.3
17
18 ;re-imaging optics spec
19 pre_surf=9 ;no. of reflective optics in the pre-optics
20 pre_ref=0.99 ;reflectivity per pre-optics mirror
21 ;pre_em=1.-pre_ref
22 ;pre_emtot=9*pre_em*(1-(4*pre_em)) ;the emissivity for 9 cold mirrors
23 pre_thru=pre_ref^pre_surf
24
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