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== IOO Optical Parameters == = IOO Optical Parameters =
Under construction...
Line 3: Line 4:
Under construction... ----
== Mirror Location ==
=== Length ===
|| ||iKAGRA ||bKAGRA ||
||MCi to MCo ||0.500m ||same ||
||MCi/o to MCe ||26.400m ||same ||
||MCo to IMMT1 ||5.836m ||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 and ITMs in iKAGRA

* ITMX/Y for iKAGRA is 26.718m ahead of ITMX/Y for bKAGRA (considering MC length and ITM substrate; iKAGRA ITM is silica/8cm thick, bKAGRA ITM is sapphire/15cm thick)

* 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 ||0.543deg || ||PR3 ||0.6860deg || ||SR3 ||0.6860deg ||
||MCo ||44.729deg ||


=== 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+16.8470i ||same ||same ||
||MCo ||2.3889mm ||0.25+16.8470i ||same ||same ||
||MCe ||4.4703mm ||26.6512+16.8470i ||same ||same ||
||IMMT1 ||2.5398mm ||6.0858+16.8470i / -8.5782 + 5.3878i ||2.5413mm ||6.118+16.8465i / 3.9404+0.8524i ||
||IMMT2 ||1.9356mm ||-5.4733 + 5.3878i ||4.4734mm ||7.0454+0.8524i / -12.9093+56.1168i ||
||PRM ||none ||- ||4.4828mm ||8.31934+58.1447i ||
||PR2 ||3.8326mm ||14.3052+5.3878i / 1.4043+0.0455i ||4.4648mm ||6.44215+58.1447i / -1.53283+0.0399461i ||
||PR3 ||34.015mm ||12.4704+0.0455i / -862.87+3182.3i ||36.6854mm ||12.5989+0.0399461i / 1039.26+293.48i ||
||BS ||33.973mm/35.400mm ||-847.11+3182.3i / 964.65+3428.6i ||36.1703mm ||-1023.5+293.48i / 1020.17+293.48i ||
||Arm waist ||mm ||- ||16.1970mm ||- ||
||ITMX/Y ||none ||- ||35.3005mm ||1500+774.597i ||
||ETMX/Y ||39.589mm(Y) ||2141.3+3182.3i / -2023.8+3428.6i ||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 ||


* ETM RoCs are 7.32km for iKAGRA

* IMMT1 has RoC = 19.5 +/- 1 m, and IMMT2 is 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 ||(6000 +/- 100)ppm || ||
||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 ||(6000 +/- 100)ppm || ||
||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 ||<200ppm || ||
||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 ||-8.910 +/- 0.009 m ||measured; [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5981|JGW-T1605981]] (spec was -8.953(+/-0.1)m)||
||AR Radius of Curvature ||Flat (>100km) ||As flat as possible ||
||AR Wedge Angle ||2.45 deg ||measured ||
||Transmission@1064nm ||2700ppm<T<3200ppm || ||
||HR Loss@1064nm ||<1000ppm || ||
||HR Transmissivity@1064nm|| 0.3%(AOI = 2.59deg)|| measured by vendor||
||AR Reflectivity@1064nm ||0.03% || measured by vendor ||
||AR Reflectivity@670nm ||~48%（AOI=0deg), ~50.5%(AOI=30deg), ~49.5%(AOI=45deg)|| ||
||Diameter ||99.77mm ||measured ||
||Thickness ||51.76mm ||measured at thinnest point ||




'''MMT2 (bKAGRA)'''
||HR Radius of Curvature ||14.005 +/- 0.238 m ||measured; [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5981|JGW-T1605981]] (spec was 13.910(+/-0.1)m)||
||AR Radius of Curvature ||Flat (>100km) ||As flat as possible ||
||AR Wedge Angle ||2.45 deg ||measured ||
||Transmission@1064nm ||200ppm<T<400ppm || ||
||HR Loss@1064nm ||<1000ppm || ||
||HR Transmissivity@1064nm|| 0.028%(AOI = 2.59deg)|| measured by vendor||
||AR Reflectivity@1064nm ||0.03% || measured by vendor ||
||AR Reflectivity@670nm ||~48%（AOI=0deg), ~50.5%(AOI=30deg), ~49.5%(AOI=45deg)|| ||
||Diameter ||99.75mm ||measured ||
||Thickness ||52.93mm ||measured at thinnest point ||




'''MMT1 (iKAGRA)'''
||HR Radius of Curvature ||19.5(+/-1)m || ||
||AR Radius of Curvature ||Flat || ||
||AR Wedge Angle ||??+/-??deg || ||
||HR Reflectivity@1064nm ||> 99.5% || ||
||Transmission@1064nm ||0.78% (measured) || ||
||HR Loss@1064nm ||?? || ||
||AR Reflectivity@1064nm ||< 1% || ||
||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 || ||

'''EOM'''
|| Size || 4mm x 4mm x 40 mm||
||Wedge (in) ||2.8/2.8deg ||
|| Wedge (out) ||2.8/2.0deg||

See,

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

5.836m

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 and ITMs in iKAGRA

* ITMX/Y for iKAGRA is 26.718m ahead of ITMX/Y for bKAGRA (considering MC length and ITM substrate; iKAGRA ITM is silica/8cm thick, bKAGRA ITM is sapphire/15cm thick)

* 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

0.543deg

PR3

0.6860deg

SR3

0.6860deg

MCo

44.729deg

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+16.8470i

same

same

MCo

2.3889mm

0.25+16.8470i

same

same

MCe

4.4703mm

26.6512+16.8470i

same

same

IMMT1

2.5398mm

6.0858+16.8470i / -8.5782 + 5.3878i

2.5413mm

6.118+16.8465i / 3.9404+0.8524i

IMMT2

1.9356mm

-5.4733 + 5.3878i

4.4734mm

7.0454+0.8524i / -12.9093+56.1168i

PRM

none

-

4.4828mm

8.31934+58.1447i

PR2

3.8326mm

14.3052+5.3878i / 1.4043+0.0455i

4.4648mm

6.44215+58.1447i / -1.53283+0.0399461i

PR3

34.015mm

12.4704+0.0455i / -862.87+3182.3i

36.6854mm

12.5989+0.0399461i / 1039.26+293.48i

BS

33.973mm/35.400mm

-847.11+3182.3i / 964.65+3428.6i

36.1703mm

-1023.5+293.48i / 1020.17+293.48i

Arm waist

mm

-

16.1970mm

-

ITMX/Y

none

-

35.3005mm

1500+774.597i

ETMX/Y

39.589mm(Y)

2141.3+3182.3i / -2023.8+3428.6i

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

* ETM RoCs are 7.32km for iKAGRA

* IMMT1 has RoC = 19.5 +/- 1 m, and IMMT2 is 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

(6000 +/- 100)ppm

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

(6000 +/- 100)ppm

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

<200ppm

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

-8.910 +/- 0.009 m

measured; JGW-T1605981 (spec was -8.953(+/-0.1)m)

AR Radius of Curvature

Flat (>100km)

As flat as possible

AR Wedge Angle

2.45 deg

measured

Transmission@1064nm

2700ppm<T<3200ppm

HR Loss@1064nm

<1000ppm

HR Transmissivity@1064nm

0.3%(AOI = 2.59deg)

measured by vendor

AR Reflectivity@1064nm

0.03%

measured by vendor

AR Reflectivity@670nm

~48%（AOI=0deg), ~50.5%(AOI=30deg), ~49.5%(AOI=45deg)

Diameter

99.77mm

measured

Thickness

51.76mm

measured at thinnest point

MMT2 (bKAGRA)

HR Radius of Curvature

14.005 +/- 0.238 m

measured; JGW-T1605981 (spec was 13.910(+/-0.1)m)

AR Radius of Curvature

Flat (>100km)

As flat as possible

AR Wedge Angle

2.45 deg

measured

Transmission@1064nm

200ppm<T<400ppm

HR Loss@1064nm

<1000ppm

HR Transmissivity@1064nm

0.028%(AOI = 2.59deg)

measured by vendor

AR Reflectivity@1064nm

0.03%

measured by vendor

AR Reflectivity@670nm

~48%（AOI=0deg), ~50.5%(AOI=30deg), ~49.5%(AOI=45deg)

Diameter

99.75mm

measured

Thickness

52.93mm

measured at thinnest point

MMT1 (iKAGRA)

HR Radius of Curvature

19.5(+/-1)m

AR Radius of Curvature

Flat

AR Wedge Angle

??+/-??deg

HR Reflectivity@1064nm

> 99.5%

Transmission@1064nm

0.78% (measured)

HR Loss@1064nm

??

AR Reflectivity@1064nm

< 1%

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

EOM

Size

4mm x 4mm x 40 mm

Wedge (in)

2.8/2.8deg

Wedge (out)

2.8/2.0deg

See,

KAGRA/Subgroups/IOO/OptParam (last edited 2022-02-09 11:47:14 by matteo.leonardi)