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

== Reports ==

To be uploaded.

=== 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 17/10/25) ===
||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 ===

TBD

=== Control Scheme ===

TBD

Output Mode-cleaner

Meetings

Reports

To be uploaded.

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 17/10/25)

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

TBD

Control Scheme

TBD

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