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Size: 5697
Comment:
|
Size: 5726
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 72: | Line 72: |
||Diameter||380mm +/- 0.25mm|| || ||Thickness||80mm +/- 0.5mm|| || ||HR Radius of Curvature ||Flat (>100km) ||As flat as possible|| |
||Diameter ||380mm +/- 0.25mm || || ||Thickness ||80mm +/- 0.5mm || || ||HR Radius of Curvature ||Flat (>100km) ||As flat as possible || |
| Line 78: | Line 77: |
| ||Incident Angle|| || || ||Transmission@1064nm ||0.5|| || |
||Incident Angle ||45.15deg +/-0.05deg || || ||Transmission@1064nm ||0.5 || || |
| Line 81: | Line 80: |
| ||Transmission@532nm ||>0.9|| || | ||Transmission@532nm ||>0.9 || || |
| Line 85: | Line 84: |
Actual Optical Parameters of the Main Interferometer
Contents
Optical Parameters
Interferometer Diagram
g1=-0.7857, g2=-0.6043, 16.875MHz, 45MHz
This is the parameter set chosen by the MIF group.
Lengths & Frequencies
f1 |
16.880962MHz (3*f2/8) |
f2 |
45.015898MHz |
f3 |
56.269873MHz (10*f2/8) |
Larm |
3000.0m |
Lmc |
26.639m |
|
|
Lprc |
66.591m |
Lsrc |
66.591m |
Las |
3.3299m |
Lp1 |
14.7606 |
Lp2 |
11.0669m |
Lp3 |
15.7638m |
Lmi |
25m |
Lmx |
26.6649m |
Lmy |
23.3351m |
Ls1 |
14.7606m |
Ls2 |
11.0669m |
Ls3 |
15.7638m |
Folding angle |
0.6860[deg] |
|
|||
Folding angle is an incident angle of the beam to the folding mirrors. The angle between incoming and reflected beams is twice the folding angle.
Radius of Curvatures (Positive for concave)
ITM |
1680.0m |
ETM |
1870.0m |
|
|
PRM |
303.96m |
PR2 |
-2.7628m |
PR3 |
24.574m |
SRM |
303.96m |
SR2 |
-2.7764m |
SR3 |
24.584m |
Beam Spot Size (1/e^2 radius)
ITM |
35.064mm |
ETM |
39.983mm |
|
|
PRM |
4.030mm |
PR2 |
4.030mm |
PR3 |
36.479mm |
SRM |
4.031mm |
SR2 |
4.031mm |
SR3 |
36.327mm |
Mirror Specs
Test Masses
ITM
HR Radius of Curvature |
1.68(+/-0.008)km |
0.5% error |
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
0.2+/-0.002deg |
|
Transmission@1064nm |
0.004 +0.001/-0.0 |
|
Transmission asymmetry@1064nm |
2*|(T1-T2)/(T1+T2)| < 0.01 |
T1 and T2 are the transmission of two ITMs |
HR Loss@1064nm |
<45ppm |
|
Transmission@532nm |
0.2(+/-0.1) |
Transmission of ITM must be larger than ETM@532nm |
Transmission asymmetry@532nm |
No requirement |
|
HR Loss@532nm |
<1% |
|
AR Reflectivity@1064nm |
200(+100/-0)ppm |
|
AR Reflectivity@532nm |
<5% |
As small as possible |
ETM
HR Radius of Curvature |
1.87(+/-0.009)km |
0.5% error |
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
0.2+/-0.1deg |
|
Transmission@1064nm |
5ppm < T < 10ppm |
|
Transmission asymmetry@1064nm |
2*|(T1-T2)/(T1+T2)| < 0.01 |
Best Effort |
HR Loss@1064nm |
<45ppm |
|
Transmission@532nm |
0.2(+/-0.01) |
Transmission of ETM must be smaller than ITM@532nm |
Transmission asymmetry@532nm |
No requirement |
|
HR Loss@532nm |
<1% |
|
AR Reflectivity@1064nm |
<50ppm |
|
AR Reflectivity@532nm |
<5% |
As small as possible |
BS
Diameter |
380mm +/- 0.25mm |
|
Thickness |
80mm +/- 0.5mm |
|
HR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
0.383+/-0.008deg |
|
Incident Angle |
45.15deg +/-0.05deg |
|
Transmission@1064nm |
0.5 |
|
HR Loss@1064nm |
<100ppm |
|
Transmission@532nm |
>0.9 |
|
HR Loss@532nm |
<1% |
|
AR Reflectivity@1064nm |
<50ppm |
|
AR Reflectivity@532nm |
<5% |
As small as possible |
PRM
HR Radius of Curvature |
303.96m(+/-1.5)m |
0.5% error |
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
TBD |
|
Transmission@1064nm |
0.1(+0.001/-0.0) |
|
HR Loss@1064nm |
<45ppm |
|
AR Reflectivity@1064nm |
<50ppm |
|
PR2
HR Radius of Curvature |
-2.763(+/-0.01)m |
0.5% error |
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
TBD |
|
Transmission@1064nm |
500ppm(+/-50ppm) |
|
HR Loss@1064nm |
<45ppm |
|
Transmission@532nm |
> 0.5 |
As large as possible |
HR Loss@532nm |
<10% |
|
AR Reflectivity@1064nm |
<1000ppm |
As small as possible |
AR Reflectivity@532nm |
<5% |
As small as possible |
PR3
HR Radius of Curvature |
24.57(+/-0.1)m |
0.5% error |
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
TBD |
|
Transmission@1064nm |
<50ppm |
As small as possible |
HR Loss@1064nm |
<45ppm |
|
Transmission@532nm |
< 0.1 |
As small as possible |
HR Loss@532nm |
<10% |
|
AR Reflectivity@1064nm |
<1000ppm |
As small as possible |
AR Reflectivity@532nm |
<5% |
As small as possible |
SRM
HR Radius of Curvature |
303.96m(+/-1.5)m |
0.5% error |
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
TBD |
|
Transmission@1064nm |
0.1536(+/-0.001) |
|
HR Loss@1064nm |
<45ppm |
|
AR Reflectivity@1064nm |
<50ppm |
|
SR2
HR Radius of Curvature |
-2.776(+/-0.01)m |
0.5% error |
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
TBD |
|
Transmission@1064nm |
500ppm(+/-50ppm) |
|
HR Loss@1064nm |
<45ppm |
|
Transmission@532nm |
> 0.5 |
As large as possible |
HR Loss@532nm |
<10% |
|
AR Reflectivity@1064nm |
<1000ppm |
As small as possible |
AR Reflectivity@532nm |
<5% |
As small as possible |
SR3
HR Radius of Curvature |
24.58(+/-0.1)m |
0.5% error |
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
TBD |
|
Transmission@1064nm |
<50ppm |
As small as possible |
HR Loss@1064nm |
<45ppm |
|
Transmission@532nm |
< 0.1 |
As small as possible |
HR Loss@532nm |
<10% |
|
AR Reflectivity@1064nm |
<1000ppm |
As small as possible |
AR Reflectivity@532nm |
<5% |
As small as possible |