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 |
|
PR2 |
0.6860deg |
|
SR2 |
0.6860deg |
MCe |
44.729deg |
|
PR3 |
0.6860deg |
|
SR3 |
0.6860deg |
MCo |
0.543deg |
Beam Radii
|
iKAGRA |
iKAGRA q-parameter (at HR surface) |
bKAGRA |
bKAGRA q-parameter (at HR surface) |
MC waist |
2.3887mm |
- |
same |
- |
MCi |
2.3889mm |
0.25+16.8465i |
same |
same |
MCe |
2.3889mm |
26.6512+16.8465i |
same |
same |
MCo |
4.4703mm |
0.25+16.8465i |
same |
same |
IMMT1 |
2.5413mm |
6.118+16.8465i |
? |
? |
IMMT2 |
2.7232mm |
9.223+16.8465i |
? |
? |
PRM |
none |
- |
4.4828mm |
8.31934+58.1447i |
PR2 |
3.9637mm |
15.0231+5.5228i / -1.40973+0.0428807i |
4.4648mm |
6.44215+58.1447i / -1.53283+0.0399461i |
PR3 |
35.062mm |
12.4758+0.0428807i / 1234.22+3145.49i |
36.6854mm |
12.5989+0.0399461i / 1039.26+293.48i |
BS |
35.002mm |
-1218.45+3145.49i / 1215.12+3145.49i |
36.1703mm |
-1023.5+293.48i / 1020.17+293.48i |
Arm waist |
33.723mm |
- |
16.1970mm |
- |
ITMX/Y |
34.806mm |
857.932+3357.83i |
35.3005mm |
1500+774.597i |
ETMX/Y |
39.671mm |
2080.42+3357.83i |
35.3005mm |
1500+774.597i |
SR3 |
none |
- |
36.6846mm |
1039.24+293.48i / 12.5989+0.0399479i |
SR2 |
none |
- |
4.3324mm |
-1.48739+0.0399479i / 7.10525+54.4941i |
SRM |
none |
- |
4.3380mm |
7.63598+54.4941i |
* I/ETM RoCs are 14km and 7.5km for iKAGRA
* IMMT1, IMMT2 are flat 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 |
|