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Size: 1798
Comment:
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Size: 1819
Comment:
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| == Task List == * [[KAGRA/Subgroups/IOO/OMC/Tasks|here]] |
== Installation work == * [[KAGRA/Subgroups/IOO/OMC/installation|2018/10-11]] |
Output Mode-cleaner
Meetings
Installation work
Reports
Requirement
Shot noise increase due to the signal reduction by the OMC and residual spatial higher order modes after the OMC should be less than 5%.
Optical Design (updated 17/11/14)
item |
RoC |
Beam Raidus |
OMMT1 |
13.16m |
4.46mm |
OMMT2 |
44.39m |
2.68mm |
OSTM |
flat |
TBA |
OMC1 |
flat |
444um |
OMC2 |
flat |
444um(X)/447um(Y) |
OMC3 |
1.80m |
604um |
OMC4 |
1.80m |
604um |
DCPD |
-- |
562um |
Space |
Distance |
AOI |
SRM-OMMT1 |
5.63m |
3.07deg |
OMMT1-OMMT2 |
2.60m |
3.07deg |
OMMT2-OSTM |
2.97m |
90deg |
OSTM-OBS1 |
0.30m |
90deg |
OBS1-OMC1 |
0.03m |
0.078deg |
OMC1-OMC2 |
0.357m |
3.00deg |
OMC2-OMC3 |
0.359m |
3.00deg |
OMC3-OMC4 |
0.357m |
3.00deg |
OMC4-OMC1 |
0.359m |
3.00deg |
Suspension Design
Total mass to be suspended |
13kg |
Number of suspensions |
3 |
Blade spring size |
220mm x 53mm |
Radius of curvature |
190mm |
Distance from a blade end to a suspension wire |
203.5mm |
Blade material |
MAS-1 |
Blade mass |
4.3kg |
Control Scheme
LSC |
|
Dither frequency |
TBD |
Dither optics |
OMC3 or OMC4 |
Signal extraction port |
OMC trans DCPDs |
ASC |
|
Dither frequency |
TBD |
Dither optics |
TBD |
Signal extraction port |
TBD |