= KAGRA Interface Control =

[[KAGRA/Interface/on-going|On-going discussions]]

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== Contents ==

~+1. [[#scope|Scope of each subsystem]]+~

~+2. [[#interfacetable|Table of the interface items between subsystems]]+~

~+3. [[#workinggroups|Working groups for important interface issues]]+~

~+4. [[#parameterlist|Parameter list]]+~

~+5. [[#tolerance|Requirements and tolerance]]+~

~+6. [[#dutyfactor|Duty factor]]+~

~+7. [[#reference|Reference]]+~


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 <<Anchor(scope)>>
== 1. Scope of each subsystem ==

 * Tunnel (TUN/TU): ~-''Tunnel design, Underground lab area, Access tunnel, and Safety''-~<<BR>>
 * Facility (FCL/FA): ~-''TBD''-~<<BR>>
 * Vacuum (VAC/VA): ~-''Two beam tubes, Chambers, Baffles, Beam targets, Layout, and Pumps''-~<<BR>>
 * Cryogenic (CRY/CR): ~-''Cryostat, Shield, Cryo duct, Cryo-cooler; Cryo-suspension, and Heat link''-~<<BR>>
 * Vibration Isolation (VIS/VI): ~-''Four Type-A systems, Seven Type-B systems, and Several Type-C systems''-~<<BR>>
 * Mirror (MIR/MI): ~-''23kg Sapphire mirrors, Silica BS, Small Silica mirrors for PRC, SRC, MC, OMC''-~<<BR>>
 * Laser (LAS/LA): ~-''180W laser, 10-50W laser for iKAGRA, Laser control system, and Optics for lasers''-~<<BR>>
 * Main Interferometer (MIF/IF): ~-''MIF design (length, RoC, layout), LSC, ASC, Lock acquisition, and Commissioning''-~<<BR>>
 * Input/Output Optics (IOO/IO): ~-''Input optics between laser and PRM, and Output optics including OMMT and OMC''-~<<BR>>
 * Auxiliary Optics (AOS/AO): ~-''All the optical systems that are not included in MIF or IOO''-~<<BR>>
 * Analog Electronics (AEL/EL): ~-''TBD''-~<<BR>>
 * Digital System (DGS/DG): ~-''Real-time control, Data acquisition, IFO tuning, Automatic operation, and Information collection''-~<<BR>>
 * Data Analysis (DAS/DA): ~-''Management of observation data''-~<<BR>>
 * Geophysics Interferometer (GIF/GI): ~-''Baseline interferometer and Arrangement of sensors and benchmarks''-~<<BR>>

||<style="border: none; color: gray; font-weight: bold;"> A list of allocated items to each subsystem is [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=1084|here|width=300]].||

 <<Anchor(interfacetable)>>
== 2. Table of the interface items between subsystems ==

|| ||<:>Infra<<BR>>(TUN/FCL/VAC)||<:>Susp<<BR>>(VIS/CRY)||<:>Optics<<BR>>(MIR)||<:>IFO<<BR>>(MIF/IOO/AOS/LAS)||<:>Control<<BR>>(AEL/DGS/GIF/DC)||
||<:>Infra||<:>--||<:>[[Interface/Transport|Transport]], [[Interface/Layout| Layout]], [[Interface/Compressor|Compressor]], [[Interface/Crane|Crane]], [[Interface/Cleanliness|Cleanliness]], [[Interface/SASdim|SAS dimension]]||<:>Not in particular||<:>[[Interface/laserroom|Laser room]], [[LCGT/subgroup/AOS/OptLev1|Oplev pylon]], [[LCGT/subgroup/AOS/StrayLight1|Baffles]], [[Interface/Target|Target]], [[LCGT/subgroup/AOS/Viewport1|Viewport]], [[Interface/Innersurface|Inner surface]], [[Interface/Layout|Layout]]||<:>[[Interface/Network|Network]], [[Interface/EnvMon|Environmental monitors]], [[Interface/Benchmark|Benchmark]]||
||<:>Susp||<:>[[Interface/Transport|Transport]], [[Interface/Layout| Layout]], [[Interface/Compressor|Compressor]], [[Interface/Crane|Crane]], [[Interface/Cleanliness|Cleanliness]], [[Interface/SASdim|SAS dimension]]||<:>--||<:>[[Interface/Scattering|Scattering]], [[Interface/Absorption|Absorption]]||<:>[[LCGT/subgroup/AOS/StrayLight1|Cryo-baffle]], [[LCGT/subgroup/AOS/Viewport1|Viewport]], [[LCGT/subgroup/AOS/OptLev1|Oplev]], [[Interface/Layout|Layout]], [[Interface/Movablerange|Movable range]], [[Interface/DispNoise|Disp noise]], [[Interface/LocalSensors|Local sensors]], [[Interface/Actuator|Actuator resp]]||<:>[[Interface/Thermometer|Thermometer and Barometer]], [[Interface/OSEM|OSEM]], [[Interface/VISctrl|VIS ctrl]]||
||<:>Opt||<:>Not in particular||<:>[[Interface/Scattering|Scattering]], [[Interface/Absorption|Absorption]]||<:>--||<:>[[Interface/Wedges|Wedges]], [[Interface/OptLoss|Opt loss]], [[Interface/AR|AR refl]], [[Interface/Green|Green refl]], [[Interface/Surface|Surface property]]||<:>Not in particular||
||<:>IFO||<:>[[Interface/laserroom|Laser room]], [[LCGT/subgroup/AOS/OptLev1|Oplev pylon]], [[LCGT/subgroup/AOS/StrayLight1|Baffles]], [[Interface/Target|Target]], [[LCGT/subgroup/AOS/Viewport1|Viewport]], [[Interface/Innersurface|Inner surface]], [[Interface/Layout|Layout]]||<:>[[Interface/Cryobaffle|Cryo-baffle]], [[LCGT/subgroup/AOS/Viewport1|Viewport]], [[LCGT/subgroup/AOS/OptLev1|Oplev]], [[Interface/Layout|Layout]], [[Interface/Movablerange|Movable range]], [[Interface/DispNoise|Disp noise]], [[Interface/LocalSensors|Local sensors]], [[Interface/Actuator|Actuator resp]]||<:>[[Interface/Wedges|Wedges]], [[Interface/OptLoss|Opt loss]], [[Interface/AR|AR refl]], [[Interface/Green|Green refl]], [[Interface/Surface|Surface property]]||<:>--||<:>[[LCGT/Meeting/Instrument|Interlock]], [[Interface/DetectorDiagnostics|Diagnostics]], [[Interface/Channels|Channels]], [[Interface/Monitors|Online monitors]], [[Interface/Circuits|Front-end circuits]], [[Interface/CableConnector|Connectors]], [[Interface/IFOctrlOthers|Others]]||
||<:>Ctrl||<:>[[Interface/Network|Network]], [[Interface/EnvMon|Environmental monitors]], [[Interface/Benchmark|Benchmark]]||<:>[[Interface/Thermometer|Thermometer and Barometer]], [[Interface/OSEM|OSEM]], [[Interface/VISctrl|VIS ctrl]]||<:>Not in particular||<:>[[LCGT/Meeting/Instrument|Interlock]], [[Interface/DetectorDiagnostics|Diagnostics]], [[Interface/Channels|Channels]], [[Interface/Monitors|Online monitors]], [[Interface/Circuits|Front-end circuits]], [[Interface/CableConnector|Connectors]], [[Interface/IFOctrlOthers|Others]]||<:>--||

||<style="border: none; color: gray; font-weight: bold;"> An interface item table with each subsystem is [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=987|here|width=300]].||

 <<Anchor(workinggroups)>>
== 3. Working groups for important interface issues ==

 * [[Interface/Layout|Layout]] (VAC,MIF,AOS,IOO, etc.)
 * [[Interface/CableConnector|Cable connectors]] (VIS,CRY,AEL, etc.)
 * [[LCGT/Meeting/Instrument|Interlock]] (MIF,IOO,LAS, etc.)
 * [[Interface/DetectorDiagnostics|Detector diagnostics]] (MIF,DAS, etc.)
 * [[Interface/OplevRef|Optical lever reference]] (AOS,TUN,VAC etc.)

 <<Anchor(parameterlist)>>
== 4. Parameter list ==

 * Parameter list is [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=1082|here]].
 * Glossary is [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=1083|here]].


 <<Anchor(tolerance)>>
== 5. Requirements and tolerance ==

 * Requirements are given in the parameter list. Each parameter must be not so far from the required value as to '''deteriorate the sensitivity by less than 1%'''.
 * Tolerance is given for some of the parameters by calculating the robustness of the sensitivity. See [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=1081|here]].

 <<Anchor(dutyfactor)>>
== 6. Duty factor ==

 * The target duty factor of KAGRA is '''80%'''. Breakdown of the time loss is shown [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=932|here]].

 <<Anchor(reference)>>
== 7. Reference ==

 * ~-[[LCGT/Meeting/Reviews/External|External Review documents]]-~
 * ~-[[https://granite.phys.s.u-tokyo.ac.jp/svn/LCGT/trunk/mif/doc/DesignDocument/|MIF design document]]-~
 * ~-[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=570|Cryo-payload parameters]].-~