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\begin{document}
\title{LCGT Interface Control Document}
\author{System Engineer Office (SEO)}
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\section{Overview}

This document presents the interface information that should be shared by more than one of the 14 existing LCGT subsystems.
The interface information includes (i) definition of each subsystem, (ii) interface parameter list, and (iii) optical layout of the detector.
The document is uploaded on the LCGT SVN server (\url{https://granite.phys.s.u-tokyo.ac.jp/svn/LCGT/trunk/ICD}) and the contents are to be updated on a real-time basis.

\section{Allocation of the tasks for LCGT}

The scope of each subsystem and the boundaries of subsystems are defined so that all the LCGT components must be included in one or more subsystems.
The components shared by more than one subsystems, namely {\it interface components}, should be carefully controlled to avoid a contradictory assumption of the setup.

\subsection{List of the subsystems and 3-letter codes}
Analog Electronics (AEL)\\
Auxiliary Optics (AOS)\\
Cryogenics (CRY)\\
Digital System (DGS)\\
Facility (FCL)\\
Input and Output Optics (IOO)\\
Laser (LAS)\\
Main Interferometer (MIF)\\
Mirror (MIR)\\
Tunnel (TUN)\\
Vacuum (VAC)\\
Vibration Isolation System (VIS)

\section{Interface parameters}

\subsection{AEL}
The components that the AEL subsystem is in charge are as follows:\\
\vspace{0.01cm}\\
\input{sub2/AEL}
\\
\vspace{0.01cm}\\
and the related interface parameters are listed in Table~\ref{fig:ael}.

\subsection{AOS}
The components that the AOS subsystem is in charge are as follows:\\
\vspace{0.01cm}\\
\input{sub2/AOS}
\\
\vspace{0.01cm}\\
and the related interface parameters are listed in Table~\ref{fig:aos}.

\subsection{CRY}
The components that the CRY subsystem is in charge are as follows:\\
\vspace{0.01cm}\\
\input{sub2/CRY}
\\
\vspace{0.01cm}\\
and the related interface parameters are listed in Table~\ref{fig:cry}.

\subsection{DGS}
The components that the DGS subsystem is in charge are as follows:\\
\vspace{0.01cm}\\
\input{sub2/DGS}
\\
\vspace{0.01cm}\\
and the related interface parameters are listed in Table~\ref{fig:dgs}.

\subsection{FCL}
The components that the FCL subsystem is in charge are as follows:\\
\vspace{0.01cm}\\
\input{sub2/FCL}
\\
\vspace{0.01cm}\\
and the related interface parameters are listed in Table~\ref{fig:fcl}.

\subsection{GIF}
The components that the GIF subsystem is in charge are as follows:\\
\vspace{0.01cm}\\
\input{sub2/GIF}
\\
\vspace{0.01cm}\\
and the related interface parameters are listed in Table~\ref{fig:gif}.

\subsection{IOO}
The components that the IOO subsystem is in charge are as follows:\\
\vspace{0.01cm}\\
\input{sub2/IOO}
\\
\vspace{0.01cm}\\
and the related interface parameters are listed in Table~\ref{fig:ioo}.

\subsection{LAS}
The components that the LAS subsystem is in charge are as follows:\\
\vspace{0.01cm}\\
\input{sub2/LAS}
\\
\vspace{0.01cm}\\
and the related interface parameters are listed in Table~\ref{fig:las}.

\subsection{MIF}
The components that the MIF subsystem is in charge are as follows:\\
\vspace{0.01cm}\\
\input{sub2/MIF}
\\
\vspace{0.01cm}\\
and the related interface parameters are listed in Table~\ref{fig:mif}.

\subsection{MIR}
The components that the MIR subsystem is in charge are as follows:\\
\vspace{0.01cm}\\
\input{sub2/MIR}
\\
\vspace{0.01cm}\\
and the related interface parameters are listed in Table~\ref{fig:mir}.

\subsection{TUN}
The components that the TUN subsystem is in charge are as follows:\\
\vspace{0.01cm}\\
\input{sub2/TUN}
\\
\vspace{0.01cm}\\
and the related interface parameters are listed in Table~\ref{fig:tun}.

\subsection{VAC}
The components that the VAC subsystem is in charge are as follows:\\
\vspace{0.01cm}\\
\input{sub2/VAC}
\\
\vspace{0.01cm}\\
and the related interface parameters are listed in Table~\ref{fig:vac}.

\subsection{VIS}
The components that the VIS subsystem is in charge are as follows:\\
\vspace{0.01cm}\\
\input{sub2/VIS}
\\
\vspace{0.01cm}\\
and the related interface parameters are listed in Table~\ref{fig:vis}.

\section{Optical layout}

The Optical layout of bLCGT is shown in JGW-D1100685-v1 (dxf file).

\section{Schedule}

The Schedule of LCGT is shown here: http://gwlcgt.icrr.u-tokyo.ac.jp:13013/PWA (mpp file; password protected).
\section{Glossary}
AA	:	{\it	anti-aliasing	}\\
ADC	:	{\it	analog-digital converter	}\\
AI	:	{\it	anti-imaging	}\\
AOM	:	{\it	acoustic-optic modulator	}\\
AR	:	{\it	anti-reflective coating	}\\
AS	:	{\it	anti-symmetric port	}\\
BS	:	{\it	beamsplitter	}\\
CARM	:	{\it	common-mode arm length change	}\\
CMR(R)	:	{\it	common-mode rejection (rate)	}\\
DAC	:	{\it	digital-analog converter	}\\
DARM	:	{\it	differential-mode arm length change	}\\
EOM	:	{\it	electro-optic modulator	}\\
ESD	:	{\it	electro-static drive	}\\
ETM	:	{\it	end test mass	}\\
FI	:	{\it	Faraday isolator	}\\
FSS	:	{\it	frequency stabilization system	}\\
HOM	:	{\it	higher order mode	}\\
IM	:	{\it	intermediate mass	}\\
IP	:	{\it	inverted pendulum	}\\
ISS	:	{\it	intensity stabilization system	}\\
ITM	:	{\it	input test mass	}\\
LVDT	:	{\it	linear variable differential transformer	}\\
MB	:	{\it	magnet block	}\\
MC	:	{\it	mode-cleaner	}\\
MGAS	:	{\it	monolithic geometrical anti-spring	}\\
MICH	:	{\it	differential length change of BS and ITMs	}\\
MMT	:	{\it	mode-matching telescope	}\\
MZ	:	{\it	Mach-Zehnder	}\\
OMC	:	{\it	output mode-cleaner	}\\
PD	:	{\it	photo-detector	}\\
PDH	:	{\it	Pound-Drever-Hall method	}\\
PF	:	{\it	platform	}\\
PMC	:	{\it	pre-mode-cleaner	}\\
POM	:	{\it	pick-off mirror	}\\
POP	:	{\it	pick-off port in PRC	}\\
POX	:	{\it	pick-off port from ITMx AR	}\\
POY	:	{\it	pick-off port from ITMy AR	}\\
PRCL	:	{\it	power-recycling cavity length change	}\\
PRM	:	{\it	power-recycling mirror	}\\
PTC	:	{\it	pulse tube cooler	}\\
QPD	:	{\it	quadrant photo-detector	}\\
RC	:	{\it	recycling cavity	}\\
REFL	:	{\it	reflection port	}\\
RM	:	{\it	recoil mass	}\\
RMS	:	{\it	root mean square	}\\
RMTM	:	{\it	recoil mass of test mass	}\\
RoC	:	{\it	radius of curvature	}\\
SAS	:	{\it	seismic attenuation system	}\\
SFA	:	{\it	single frequency amplifier	}\\
SRCL	:	{\it	signal-recycling cavity length change	}\\
SRM	:	{\it	signal-recycling mirror	}\\
TCS	:	{\it	thermal compensation system	}\\
TM	:	{\it	test mass	}\\
WFS	:	{\it	wave-front sensing	}\\

\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{ael.eps}
	\caption{Interface parameters that AEL subsystem is in charge of.}
	\label{fig:ael}
	\end{center}
\end{table}
\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{aos.eps}
	\caption{Interface parameters that AOS subsystem is in charge of.}
	\label{fig:aos}
	\end{center}
\end{table}
\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{cry.eps}
	\caption{Interface parameters (1) that CRY subsystem is in charge of.}
	\label{fig:cry}
	\end{center}
\end{table}
\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{cry2.eps}
	\caption{Interface parameters (2) that CRY subsystem is in charge of.}
	\label{fig:cry2}
	\end{center}
\end{table}
\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{dgs.eps}
	\caption{Interface parameters that DGS subsystem is in charge of.}
	\label{fig:dgs}
	\end{center}
\end{table}
%\begin{table}[t]
%	\begin{center}
%		\includegraphics[scale=0.70]{das.eps}
%	\caption{Interface parameters that DAS subsystem is in charge of.}
%	\label{fig:das}
%	\end{center}
%\end{table}
\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{fcl.eps}
	\caption{Interface parameters that FCL subsystem is in charge of.}
	\label{fig:fcl}
	\end{center}
\end{table}
\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{gif.eps}
	\caption{Interface parameters that GIF subsystem is in charge of.}
	\label{fig:gif}
	\end{center}
\end{table}
\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{ioo.eps}
	\caption{Interface parameters that IOO subsystem is in charge of.}
	\label{fig:ioo}
	\end{center}
\end{table}

\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{las.eps}
	\caption{Interface parameters that LAS subsystem is in charge of.}
	\label{fig:las}
	\end{center}
\end{table}

\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{mif.eps}
	\caption{Interface parameters that MIF subsystem is in charge of.}
	\label{fig:mif}
	\end{center}
\end{table}

\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{mir.eps}
	\caption{Interface parameters (1) that MIR subsystem is in charge of.}
	\label{fig:mir}
	\end{center}
\end{table}
\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{mir2.eps}
	\caption{Interface parameters (2) that MIR subsystem is in charge of.}
	\label{fig:mir2}
	\end{center}
\end{table}

\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{tun.eps}
	\caption{Interface parameters that TUN subsystem is in charge of.}
	\label{fig:tun}
	\end{center}
\end{table}

\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{vac.eps}
	\caption{Interface parameters that VAC subsystem is in charge of.}
	\label{fig:vac}
	\end{center}
\end{table}

\begin{table}[t]
	\begin{center}
		\includegraphics[scale=0.70]{vis.eps}
	\caption{Interface parameters that VIS subsystem is in charge of.}
	\label{fig:vis}
	\end{center}
\end{table}

\section{Other constants}

Other constants are listed in Table~\ref{fig:const}.
\begin{table}[t]
	\begin{center}
		\includegraphics[scale=1.0]{const.eps}
	\caption{Other constants.}
	\label{fig:const}
	\end{center}
\end{table}

%\section*{Appendix}
%\appendix

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