\section{Detector concept 2 : MDT + RPC (working title)}

{\it
Introduction to this concept.\\

This section should describe the technology concept, details 
up to the level of a single chamber should be given in the appropriate
appendix. 
}

\subsection{Detector technology and layout}

{\it
  \begin{enumerate}
  \item Description of detector concept (a detailed description of the
    working principle of each detector should be given as an
    appendix).\\
    If more than 1 technology is used motivate the decision and detail
    how they work together (e.g.\ can services be shared, is the
    information of the trigger chambers used in the precision
    chambers, how are combined chambers assembled etc.)\\
  \item List of all operating parameters
  \item Detailed layout: acceptance, description of chamber overlap
    and dead areas, drawings\\ 
  \item Tables with chambers sizes, number of channels
  \item Internal alignment scheme (the overall common endcap alignment scheme
    is described in the previous chapter)
  \item Calculations about mechanical stability and expected
    deformations due to gravity, temperature changes, (magnetic field) etc.\
  \item Requirements for mount points
  \item Details of service points and other positions where access is
    needed
  \item Concept for chamber replacement (what needs to be dismounted etc.)
  \end{enumerate}




  \begin{table}
    \centering
    \begin{tabular}{lrr}
      Micromega/TGC/RPC/MDT & Type 1 & Type 2\\
      \hline
      Number of chambers & & \\
      Radial extension (mm)& & \\
      Minimum length in $\phi$ (mm)& & \\
      Maximum length in $\phi$ (mm)& & \\
      Thickness in z (mm)& & \\
      Mass (kg) & & \\
      Number of layers & & \\
      Number of channels & & \\
      \hline
    \end{tabular}
    \caption{Example table chamber types}
    \label{tab:chamber_type}
  \end{table}


  \begin{table}
    \centering
    \begin{tabular}{lrr}
      Chamber & Small sector & Large sector\\
      \hline
      & & \\
      \hline
    \end{tabular}
    \caption{Example table: Number and types of chambers per sector}
    \label{tab:sector_type}
  \end{table}

}

\subsection{Performance}

{\it
  Summary of chamber performance, details in appendix of technology. 
  \begin{enumerate}
  \item Spatial and angular resolution as functions of rate and angle
    of incidence
  \item Time resolution
  \item Efficiency (single measurement and segment)
  \item Double track resolution
  \item Rejection of fake and background tracks
  \end{enumerate}
  
}

\subsection{L1 trigger and electronics}

{\it
  \begin{enumerate}
  \item How the L1 signal are produced, starting from the detector signal
    till the formation of SL input.
  \item Latency (calculation, measurement with demonstrator)
  \item Compatibility with Phase II upgrade
  \end{enumerate}

}

\subsection{Readout electronics and integration in DAQ}

{\it
  \begin{enumerate}
  \item Detailed description of electronics chain
  \item Integration to DAQ 
  \item Readout related parameters, e.g. bandwidth requirements,
    number and granularity of read-out links
  \item Compatibility with Phase II upgrade
  \end{enumerate}

}

\subsection{Services, infrastructure, and DCS}

{\it
  \begin{enumerate}
  \item Description of service scheme (including power system,
    read-out, trigger, alignment), cooling needs and other special
    requirements
  \item Table with number of services (number of cables, outer
    diameter, cross section of leads)
  \item Table with power consumption (per channel, chamber, total)
  \item Required rack space 
    \begin{enumerate}
    \item UX15 (include maximum allowed distance to detector if any) 
    \item US15 (power system)
    \item USA15 (DAQ)
    \end{enumerate}
  \item Gas system and distribution\\
    Details on number of gas manifolds per sector (include drawings)
    and connections to chambers (serial, parallel?)). Size of pipes\\
    Required nominal, minimum, and maximum flow\\
    Required precision of gas mixture\\
    Safety measures in case of inflammable gas\\
    Required rack space for gas system in SGX1, USA15, UX15
  \item Integration in DCS system, requirements for DCS
  \end{enumerate}

  \begin{table}
    \centering
    \begin{tabular}{lccc}
      Cable & Number of cables & Outer cable & Cross section\\
      & (granularity) & diam. (mm) & of leads (mm$^{2}$))\\
      \hline
      HV & & & \\
      LV & & & \\
      Monitoring and control & & & \\
      Front-end links & & & \\
      Calibration & & & \\
      Alignment & & & \\
      Miscellaneous & & & \\
      \hline
    \end{tabular}
    \caption{Example table number of services per chamber}
    \label{tab:services}
  \end{table}


  \begin{table}
    \centering
    \begin{tabular}{lccc}
      Chamber & Number of channels & Power consumption per channel &
      Total power consumption\\
      \hline
      & & & \\
      \hline
    \end{tabular}
    \caption{Example table: Number and types of chambers per sector}
    \label{tab:sector_type}
  \end{table}

}

