Size: 2163
Comment:
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Size: 3851
Comment:
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Deletions are marked like this. | Additions are marked like this. |
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{{attachment:MIF-diagram.png|MIF Diagram|width=800}} | {{attachment:MIF-diagram.png|MIF Diagram|width="800"}} |
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=== g1=0.994, g2=0.571, 16.875MHz, 45MHz === |
---- === g1=-0.7857, g2=-0.6043, 16.875MHz, 45MHz === |
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||f1||16.881370MHz (3*f2/8)||f2||45.016989MHz||f3||56.271236MHz (10*f2/8)|| ||Larm||3000.0m||Lmc||26.638m|||||| ||Lprc||66.5863m||Lsrc||66.5924m||Las||3.3298m|| ||Lp1||14.75854||Lp2||12.0657m||Lp3||14.7621m|| ||Lmi||25m||Lmx||26.6649m||Lmy||23.3351m|| ||Ls1||14.75854m||Ls2||12.0657m||Ls3||14.7621m|| ||Folding angle||0.6957[deg]|||||||||| |
||f1 ||16.880962MHz (3*f2/8) ||f2 ||45.015898MHz ||f3 ||56.269873MHz (10*f2/8) || ||Larm ||3000.0m ||Lmc ||26.639m ||||<style="text-align:center"> || ||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] ||||||||<style="text-align:center"> || |
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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. |
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. |
Line 26: | Line 25: |
||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 || |
|
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||ITM||>500km||ETM||7000.0m|||||| ||PRM||313.8788m||PR2||-3.2547m||PR3||27.36m|| ||SRM||313.8788m||SR2||-3.2547m||SR3||27.36m|| |
|
Line 32: | Line 31: |
||PRM||4.046mm||PR2||4.046mm||PR3||34.242mm|| ||SRM||4.046mm||SR2||4.046mm||SR3||34.242mm|| |
||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 || |
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||ITM (Sapphire) ||>666km || ||PRM (Silica) ||>10000km || |
|
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||ITM (Sapphire)||>666km|| ||PRM (Silica)||>10000km|| |
|
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---- | |
Line 41: | Line 43: |
This is an alternative parameter set. Do not use these parameters. |
This is an alternative parameter set. Do not use these parameters. |
Line 45: | Line 46: |
||f1||11.255822MHz||f2||45.023289MHz||f3||39.395378MHz|| ||Larm||3000.0m||Lmc||26.634m|||||| ||Lprc||73.24838m||Lsrc||73.24838m||Las||3.3293m|| ||Lp1||16.9798m||Lp2||14.2858m||Lp3||16.9828m|| ||Lmi||25m||Lmx||26.66465m||Lmy||23.33535m|| ||Ls1||16.9798m||Ls2||14.2858m||Ls3||16.9828m|| |
||f1 ||11.255822MHz ||f2 ||45.023289MHz ||f3 ||39.395378MHz || ||Larm ||3000.0m ||Lmc ||26.634m ||||<style="text-align:center"> || ||Lprc ||73.24838m ||Lsrc ||73.24838m ||Las ||3.3293m || ||Lp1 ||16.9798m ||Lp2 ||14.2858m ||Lp3 ||16.9828m || ||Lmi ||25m ||Lmx ||26.66465m ||Lmy ||23.33535m || ||Ls1 ||16.9798m ||Ls2 ||14.2858m ||Ls3 ||16.9828m || |
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||ITM ||7246.3768m ||ETM ||7246.3768m ||||<style="text-align:center"> || ||PRM ||361.552m ||PR2 ||-3.985m ||PR3 ||32.4m || ||SRM ||361.552m ||SR2 ||-3.985m ||SR3 ||32.4m || |
|
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||ITM||7246.3768m||ETM||7246.3768m|||||| ||PRM||361.552m||PR2||-3.985m||PR3||32.4m|| ||SRM||361.552m||SR2||-3.985m||SR3||32.4m|| |
|
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||PRM||4.355mm||PR2||4.355mm||PR3||35.77mm|| ||SRM||4.355mm||SR2||4.355mm||SR3||35.77mm|| |
||PRM ||4.355mm ||PR2 ||4.355mm ||PR3 ||35.77mm || ||SRM ||4.355mm ||SR2 ||4.355mm ||SR3 ||35.77mm || |
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||ITM (Sapphire) ||-9610m || ||PRM (Silica) ||-765.6m || |
|
Line 64: | Line 75: |
||ITM (Sapphire)||-9610m|| ||PRM (Silica)||-765.6m|| |
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---- |
|
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=== 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 ||200(+100/-0)ppm || || ||AR Reflectivity@532nm ||<5% ||As small as possible || |
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 |
Lens effect (effective focal length seen from the AR side)
ITM (Sapphire) |
>666km |
PRM (Silica) |
>10000km |
g1=g2=0.586, 11.25MHz, 45MHz
This is an alternative parameter set. Do not use these parameters.
Lengths & Frequencies
f1 |
11.255822MHz |
f2 |
45.023289MHz |
f3 |
39.395378MHz |
Larm |
3000.0m |
Lmc |
26.634m |
|
|
Lprc |
73.24838m |
Lsrc |
73.24838m |
Las |
3.3293m |
Lp1 |
16.9798m |
Lp2 |
14.2858m |
Lp3 |
16.9828m |
Lmi |
25m |
Lmx |
26.66465m |
Lmy |
23.33535m |
Ls1 |
16.9798m |
Ls2 |
14.2858m |
Ls3 |
16.9828m |
Radius of Curvatures (Positive for concave)
ITM |
7246.3768m |
ETM |
7246.3768m |
|
|
PRM |
361.552m |
PR2 |
-3.985m |
PR3 |
32.4m |
SRM |
361.552m |
SR2 |
-3.985m |
SR3 |
32.4m |
Beam Spot Size (1/e^2 radius)
PRM |
4.355mm |
PR2 |
4.355mm |
PR3 |
35.77mm |
SRM |
4.355mm |
SR2 |
4.355mm |
SR3 |
35.77mm |
Lens effect (effective focal length seen from the AR side)
ITM (Sapphire) |
-9610m |
PRM (Silica) |
-765.6m |
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 |
200(+100/-0)ppm |
|
AR Reflectivity@532nm |
<5% |
As small as possible |