5141
Comment:
|
5842
|
Deletions are marked like this. | Additions are marked like this. |
Line 8: | Line 8: |
Note: In this figure POP is taken at the transmission of PR3, because it is easier to draw. In reality, POP will be taken at the transmission of PR2. | |
Line 9: | Line 10: |
=== g1=-0.7857, g2=-0.6043, 16.875MHz, 45MHz === | === ITM=1.9km, ETM=1.9km, PRC=16.5deg, SRC=17.5deg, 16.875MHz, 45MHz === |
Line 16: | Line 17: |
||Lp1 ||14.7606 ||Lp2 ||11.0669m ||Lp3 ||15.7638m || | ||Lp1 ||14.7615 ||Lp2 ||11.0661m ||Lp3 ||15.7638m || |
Line 18: | Line 19: |
||Ls1 ||14.7606m ||Ls2 ||11.0669m ||Ls3 ||15.7638m || ||Folding angle ||0.6860[deg] ||||||||<style="text-align:center"> || |
||Ls1 ||14.7412m ||Ls2 ||11.1115m ||Ls3 ||15.7386m || ||Folding Angle||||||||||<style="text-align:center"> || |
Line 25: | Line 26: |
||ITM ||1680.0m ||ETM ||1870.0m ||||<style="text-align:center"> || ||PRM ||303.96m ||PR2 ||-2.7628m ||PR3 ||24.574m || ||SRM ||303.96m ||SR2 ||-2.7764m ||SR3 ||24.584m || |
||ITM ||1900.0m ||ETM ||1900.0m ||||<style="text-align:center"> || ||PRM ||458.1285m ||PR2 ||-3.0764m ||PR3 ||24.9165m || ||SRM ||458.1285m ||SR2 ||-2.9872m ||SR3 ||24.9165m || |
Line 31: | Line 32: |
||ITM ||35.064mm ||ETM ||39.983mm ||||<style="text-align:center"> || ||PRM ||4.030mm ||PR2 ||4.030mm ||PR3 ||36.479mm || ||SRM ||4.031mm ||SR2 ||4.031mm ||SR3 ||36.327mm || |
||ITM ||35.3mm ||ETM ||35.3mm ||||<style="text-align:center"> || ||PRM ||4.457mm ||PR2 ||4.457mm ||PR3 ||36.639mm || ||SRM ||4.308mm ||SR2 ||4.328mm ||SR3 ||36.666mm || |
Line 40: | Line 41: |
||HR Radius of Curvature ||1.68(+/-0.008)km ||0.5% error || | ||HR Radius of Curvature ||1.90(+/-0.0095)km ||0.5% error || |
Line 42: | Line 43: |
||AR Wedge Angle ||0.2+/-0.002deg || || | ||AR Wedge Angle ||0.025+0/-0.01deg || || |
Line 56: | Line 57: |
||HR Radius of Curvature ||1.87(+/-0.009)km ||0.5% error || | ||HR Radius of Curvature ||1.9(+/-0.0095)km ||0.5% error || |
Line 68: | Line 69: |
'''BS''' ||Diameter ||370mm +/- 0.25mm || || ||Thickness ||80mm +/- 0.5mm || || ||HR Radius of Curvature ||Flat (>500km) ||As flat as possible || ||AR Radius of Curvature ||Flat (>500km) ||As flat as possible || ||AR Wedge Angle ||0.08+0/-0.01deg || || ||Incident Angle ||44.9684deg +/-0.05deg || || ||Transmission@1064nm ||50% +/-1% || || ||HR Loss@1064nm ||<100ppm || || ||Transmission@532nm ||>0.9 || || ||HR Loss@532nm ||<1% || || ||AR Reflectivity@1064nm ||<50ppm || || ||AR Reflectivity@532nm ||<5% ||As small as possible || |
|
Line 69: | Line 88: |
||HR Radius of Curvature ||303.96m(+/-1.5)m ||0.5% error || | ||HR Radius of Curvature ||458.1285m(+/-20)m ||5% error || |
Line 76: | Line 95: |
Line 77: | Line 99: |
||HR Radius of Curvature ||-2.763(+/-0.01)m ||0.5% error || | ||HR Radius of Curvature ||-3.0764(+/-0.01)m || || |
Line 84: | Line 106: |
||AR Reflectivity@1064nm ||<1000ppm ||As small as possible|| | ||AR Reflectivity@1064nm ||<1000ppm ||As small as possible || |
Line 87: | Line 109: |
Line 88: | Line 111: |
||HR Radius of Curvature ||24.57(+/-0.1)m ||0.5% error || | ||HR Radius of Curvature ||24.9165(+/-0.01)m || || |
Line 95: | Line 118: |
||AR Reflectivity@1064nm ||<1000ppm ||As small as possible|| | ||AR Reflectivity@1064nm ||<1000ppm ||As small as possible || |
Line 99: | Line 122: |
Line 100: | Line 125: |
||HR Radius of Curvature ||303.96m(+/-1.5)m ||0.5% error || | ||HR Radius of Curvature ||458.1285m(+/-20)m ||5% error || |
Line 107: | Line 132: |
Line 108: | Line 134: |
||HR Radius of Curvature ||-2.776(+/-0.01)m ||0.5% error || | ||HR Radius of Curvature ||-2.9872(+/-0.01)m |||| |
Line 115: | Line 141: |
||AR Reflectivity@1064nm ||<1000ppm ||As small as possible|| | ||AR Reflectivity@1064nm ||<1000ppm ||As small as possible || |
Line 119: | Line 145: |
||HR Radius of Curvature ||24.58(+/-0.1)m ||0.5% error || | ||HR Radius of Curvature ||24.9165(+/-0.01)m |||| |
Line 126: | Line 152: |
||AR Reflectivity@1064nm ||<1000ppm ||As small as possible|| | ||AR Reflectivity@1064nm ||<1000ppm ||As small as possible || |
Line 128: | Line 154: |
Actual Optical Parameters of the Main Interferometer
Contents
Optical Parameters
Interferometer Diagram
Note: In this figure POP is taken at the transmission of PR3, because it is easier to draw. In reality, POP will be taken at the transmission of PR2.
ITM=1.9km, ETM=1.9km, PRC=16.5deg, SRC=17.5deg, 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 |
14.7615 |
Lp2 |
11.0661m |
Lp3 |
15.7638m |
Lmi |
25m |
Lmx |
26.6649m |
Lmy |
23.3351m |
Ls1 |
14.7412m |
Ls2 |
11.1115m |
Ls3 |
15.7386m |
Folding Angle |
|
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 |
1900.0m |
ETM |
1900.0m |
|
|
PRM |
458.1285m |
PR2 |
-3.0764m |
PR3 |
24.9165m |
SRM |
458.1285m |
SR2 |
-2.9872m |
SR3 |
24.9165m |
Beam Spot Size (1/e^2 radius)
ITM |
35.3mm |
ETM |
35.3mm |
|
|
PRM |
4.457mm |
PR2 |
4.457mm |
PR3 |
36.639mm |
SRM |
4.308mm |
SR2 |
4.328mm |
SR3 |
36.666mm |
Mirror Specs
Test Masses
ITM
HR Radius of Curvature |
1.90(+/-0.0095)km |
0.5% error |
AR Radius of Curvature |
Flat (>100km) |
As flat as possible |
AR Wedge Angle |
0.025+0/-0.01deg |
|
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 |
1.9(+/-0.0095)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 |
370mm +/- 0.25mm |
|
Thickness |
80mm +/- 0.5mm |
|
HR Radius of Curvature |
Flat (>500km) |
As flat as possible |
AR Radius of Curvature |
Flat (>500km) |
As flat as possible |
AR Wedge Angle |
0.08+0/-0.01deg |
|
Incident Angle |
44.9684deg +/-0.05deg |
|
Transmission@1064nm |
50% +/-1% |
|
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 |
458.1285m(+/-20)m |
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 |
-3.0764(+/-0.01)m |
|
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 |
24.9165(+/-0.01)m |
|
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 |
458.1285m(+/-20)m |
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 |
-2.9872(+/-0.01)m |
|
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 |
24.9165(+/-0.01)m |
|
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 |