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| '''[[../|..Up]]''' |
Optical Parameters
Parameter |
iLCGT |
mLCGT |
units |
Laser source |
|||
Wave length |
1064 |
1064 |
nm |
Initial Laser Power |
10-20 |
TBD |
W |
Injecting Laser Power into IFO |
10-20 |
TBD |
W |
Modulation depth |
-- |
-- |
|
RF freq 1 |
TBD (PM) |
11.25 (PM) |
MHz |
RF freq 2 |
NA |
45 (AM) |
MHz |
Primary parameters of interferometer |
|||
Arm cavity Finesse |
1546 |
1546 |
|
Arm cavity power gain |
960 |
960 |
|
PR gain |
No PR |
-- |
|
Arm power (single arm) |
-- |
-- |
W |
PRC power on BS |
10-20 |
100-200 |
W |
Cavity Length |
|||
Arm cavity length |
3000 |
3000 |
m |
PR cavity length |
No PR |
73.2826 |
m |
Asymmetry length |
3.33103 |
3.33103 |
m |
BS-FM length |
25 |
25 |
m |
SR cavity length |
No SR |
73.2826 |
m |
SRC detuning phase |
No SR |
TBD |
degree |
Mirror optical properties |
|||
EM Reflectivity |
0.999945 |
0.999945 |
|
FM Reflectivity |
0.996000 |
0.996000 |
|
PRM Reflectivity |
No PR |
0.77 |
|
SRM Reflectivity |
No SR |
0.85 |
|
BS Reflectivity |
0.5 |
0.5 |
|
HR Coating Loss of EM and FM |
45e-6 |
45e-6 |
|
BS Loss |
-- |
-- |
|
AR Transmittance |
-- |
-- |
|
AR Coating Loss |
-- |
-- |
|
|
|
|
|
MICH contrast |
|
|
|
Other losses in PRC |
|
|
|
Other losses in SRC |
|
|
|
|
|
|
|
Mirror geometries |
|||
EM mass |
10.8 |
TBD |
kg |
FM mass |
30? |
TBD |
kg |
PRM mass |
No PR |
10.8? |
kg |
SRM mass |
No SR |
10.8? |
kg |
BS mass |
29.9 |
29.9 |
kg |
|
|
|
|
EM ROC |
7098.08 |
TBD |
m |
FM ROC |
TBD |
TBD |
m |
FM AR ROC |
Inf |
Inf |
m |
PRM ROC |
No PR |
-- |
m |
SRM ROC |
No SR |
-- |
m |
BS ROC |
Inf |
Inf |
m |
|
|
|
|
EM radius/thickness |
25 / 10 |
-- |
cm |
FM radius/thickness |
TBD |
-- |
cm |
PRM radius/thickness |
No PR |
-- |
cm |
SRM radius/thickness |
No SR |
-- |
cm |
BS radius/thickness |
38 / 12 |
38 / 12 |
cm |
|
|
|
|
Mode Cleaner |
|||
MC1 length |
-- |
-- |
m |
MC2 length |
26.648218 |
26.648218 |
m |
MC1 Finesse |
-- |
-- |
|
MC2 Finesse |
-- |
-- |
|
|
|
|
|
Output Mode Cleaner |
|||
OMC length |
No OMC |
TBD |
m |
OMC Finesse |
No OMC |
TBD |
|
OMC input/output mirror reflectivity |
No OMC |
TBD |
|
OMC end mirror reflectivity |
No OMC |
TBD |
|
OMC MC FSR |
No OMC |
TBD |
MHz |
DC readout phase |
NA |
90 |
degree |
Control Bandwidth |
|||
Quantum efficiency |
0.9 |
0.9 |
|
CARM control band width |
30k? |
-- |
Hz |
DARM control band width |
200? |
-- |
Hz |
PRC control band width |
No PR |
-- |
Hz |
MICH control band width |
50? |
-- |
Hz |
SRC control band width |
No SR |
-- |
Hz |
Feed-Forward gain |
TBD |
-- |
|
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