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TBA == Meetings ==
 * [[KAGRA/Subgroups/IOO/OMC/meeting2016|2016]]
 * [[KAGRA/Subgroups/IOO/OMC/meeting2017|2017]]
 * [[KAGRA/Subgroups/IOO/OMC/meeting2018|2018]]

== Task List ==
 * [[KAGRA/Subgroups/IOO/OMC/Tasks|here]]

== Reports ==

 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8043|OMC Design Document]]

== Requirement ==

Shot noise increase due to the signal reduction by the OMC and residual spatial higher order modes after the OMC should be less than 5%.

== Optical Design (updated 17/11/14) ==
||item||RoC||Beam Raidus||
||OMMT1||13.16m||4.46mm||
||OMMT2||44.39m||2.68mm||
||OSTM||flat||TBA||
||OMC1||flat||444um||
||OMC2||flat||444um(X)/447um(Y)||
||OMC3||1.80m||604um||
||OMC4||1.80m||604um||
||DCPD||--||562um||

||Space||Distance||AOI||
||SRM-OMMT1||5.63m||3.07deg||
||OMMT1-OMMT2||2.60m||3.07deg||
||OMMT2-OSTM||2.97m||90deg||
||OSTM-OBS1||0.30m||90deg||
||OBS1-OMC1||0.03m||0.078deg||
||OMC1-OMC2||0.357m||3.00deg||
||OMC2-OMC3||0.359m||3.00deg||
||OMC3-OMC4||0.357m||3.00deg||
||OMC4-OMC1||0.359m||3.00deg||

== Suspension Design ==

||Total mass to be suspended||13kg||
||Number of suspensions||3||
||Blade spring size||220x53||
||Blade material||MAS-1||
||Blade mass||4.3kg||

 * See [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7050|here]] for more detail.

== Control Scheme ==

TBD

Output Mode-cleaner

Meetings

Task List

Reports

Requirement

Shot noise increase due to the signal reduction by the OMC and residual spatial higher order modes after the OMC should be less than 5%.

Optical Design (updated 17/11/14)

item

RoC

Beam Raidus

OMMT1

13.16m

4.46mm

OMMT2

44.39m

2.68mm

OSTM

flat

TBA

OMC1

flat

444um

OMC2

flat

444um(X)/447um(Y)

OMC3

1.80m

604um

OMC4

1.80m

604um

DCPD

--

562um

Space

Distance

AOI

SRM-OMMT1

5.63m

3.07deg

OMMT1-OMMT2

2.60m

3.07deg

OMMT2-OSTM

2.97m

90deg

OSTM-OBS1

0.30m

90deg

OBS1-OMC1

0.03m

0.078deg

OMC1-OMC2

0.357m

3.00deg

OMC2-OMC3

0.359m

3.00deg

OMC3-OMC4

0.357m

3.00deg

OMC4-OMC1

0.359m

3.00deg

Suspension Design

Total mass to be suspended

13kg

Number of suspensions

3

Blade spring size

220x53

Blade material

MAS-1

Blade mass

4.3kg

  • See here for more detail.

Control Scheme

TBD

KAGRA/Subgroups/IOO/OMC (last edited 2023-06-22 13:24:12 by miyoki)