IOO Optical Parameters
Under construction...
Mirror Location
Length
|
iKAGRA |
bKAGRA |
MCi to MCo |
0.500m |
same |
MCi/o to MCe |
26.400m |
same |
MCo to IMMT1 |
5.868m |
same |
IMMT1 to IMMT2 |
3.105m |
same |
IMMT2 to PRM |
5.017m |
same |
PRM to PR2 |
14.7615m |
same |
PR2 to PR3 |
11.0661m |
same |
PR3 to BS |
15.7638m |
same |
BS to ITMX |
53.3829m |
26.6650m |
BS to ITMY |
50.0531m |
23.3350m |
ITMX/Y to ETMX/Y |
2938.35m |
3000m |
BS to SR3 |
none |
15.7386m |
SR3 to SR2 |
none |
11.1115m |
SR2 to SRM |
none |
14.7412m |
* note that there's no PRM in iKAGRA
* ITMX/Y for iKAGRA is 26.718m ahead of ITMX/Y for bKAGRA (considering MC length and ITM substrate)
* ETMX/Y for iKAGRA is 34.932m ahead of ETMX/Y for bKAGRA
Incident Angles
MCi |
44.729deg |
MCe |
44.729deg |
MCo |
0.543deg |
Beam Radii
MC waist |
2.3887mm |
MCi |
2.3889mm |
MCe |
2.3889mm |
MCo |
4.4703mm |
IMMT1(iKAGRA) |
2.5413mm |
IMMT2(iKAGRA) |
2.7232mm |
PR2(iKAGRA) |
4.7554mm |
PR3(iKAGRA) |
34.629mm |
BS(iKAGRA) |
34.593mm |
Arm waist (iKAGRA) |
33.723mm |
ITMX/Y(iKAGRA) |
34.481mm |
ETMX/Y(iKAGRA) |
39.671mm |
* I/ETM RoCs are 14km and 7.5km for iKAGRA
* Beam radii at PDs are less than ~0.4 mm
Mirror Specs
MCi
HR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
2.5 (+/-??)deg |
|
Transmission@1064nm |
0.0062 +/-?? |
|
HR Loss@1064nm |
<100ppm |
|
AR Reflectivity@1064nm |
?(+/-??)ppm |
|
Diameter |
95.97 mm |
(measured by Sigma Koki) |
Thickness at max |
29.45 mm |
(+/- 0.05 mm; measured by LMA) |
MCo
HR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
2.5 (+/-??)deg |
|
Transmission@1064nm |
0.0062 +/-?? |
|
HR Loss@1064nm |
<100ppm |
|
AR Reflectivity@1064nm |
??(+/-??)ppm |
|
Diameter |
95.95 mm |
(measured by Sigma Koki) |
Thickness at max |
29.50 mm |
(+/- 0.05 mm; measured by LMA) |
MCe
HR Radius of Curvature |
37.3(+/-0.1)m |
0.5% error |
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
??+/-??deg |
|
Transmission@1064nm |
?? +/-?? |
|
HR Loss@1064nm |
<100ppm |
|
AR Reflectivity@1064nm |
??(+/-??)ppm |
|
Diameter |
95.95 mm |
(measured by Sigma Koki) |
Thickness at max |
29.45 mm |
(+/- 0.05 mm; measured by LMA) |
MMT1 (bKAGRA)
HR Radius of Curvature |
-8.953(+/-0.1)m |
|
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
0.3(+/-??)deg |
|
Transmission@1064nm |
1500ppm<T<2000ppm |
|
HR Loss@1064nm |
<1000ppm |
|
AR Reflectivity@1064nm |
<0.1% |
|
AR Reflectivity@670nm |
>40% |
|
Diameter |
100mm? |
|
Thickness |
30mm? |
|
MMT2 (bKAGRA)
HR Radius of Curvature |
13.910(+/-0.1)m |
|
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
0.3(+/-??)deg |
|
Transmission@1064nm |
200ppm<T<400ppm |
|
HR Loss@1064nm |
<1000ppm |
|
AR Reflectivity@1064nm |
<0.1% |
|
AR Reflectivity@670nm |
>40% |
|
Diameter |
100mm? |
|
Thickness |
30mm? |
|
MMT1 (iKAGRA)
HR Radius of Curvature |
Flat |
|
AR Radius of Curvature |
Flat |
|
AR Wedge Angle |
??+/-??deg |
|
Transmission@1064nm |
?? +/-?? |
|
HR Loss@1064nm |
<100ppm |
|
AR Reflectivity@1064nm |
?(+/-??)ppm |
|
Diameter |
???mm |
|
Thickness |
??mm |
|
MMT2 (iKAGRA)
HR Radius of Curvature |
Flat |
|
AR Radius of Curvature |
Flat |
|
AR Wedge Angle |
??+/-??deg |
|
Transmission@1064nm |
?? +/-?? |
|
HR Loss@1064nm |
<100ppm |
|
AR Reflectivity@1064nm |
?(+/-??)ppm |
|
Diameter |
???mm |
|
Thickness |
??mm |
|
IFI
TGG Diameter |
???mm |
|
TGG Thickness |
??mm |
|
TGG Wedge Angle |
??deg |
|
QR Diameter |
???mm |
|
QR Thickness |
??mm |
|
QR Wedge Angle |
??deg |
|
CWP Diameter |
???mm |
|
CWP Thickness |
??mm |
|
CWP Wedge Angle |
??deg |
|
HWP Diameter |
???mm |
|
HWP Thickness |
??mm |
|
HWP Wedge Angle |
??deg |
|