deletions | additions       diff --git a/Cost.tex b/Cost.tex  index 10fc193..51255ef 100644  --- a/Cost.tex  +++ b/Cost.tex 
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\hline Pre-injector complex & 0.5 \\ \hline   %{\bf Total} & {\bf 7.0} \\ \hline  {\bf Total} & {\bf 2.9} \\ \hline  %\end{tabular}   %\end{center}   %\end{table} \end{tabular}   \end{center}   \end{table}  The length of the tunnel will be optimized on the basis of geological and accessibility criteria. For example, a tunnel of 100 km (shown in Fig.~\ref{fig:TLEP80}) might be more cost-effective than the 80-km version. Indeed, a 100-km tunnel may avoid the limestone areas in the vicinity of the Sal\`eve mountain (more difficult to dig), and might not require digging either challenging 1-km-deep shafts or a 30-km bypass tunnel needed to access the caverns underneath the Sal\`eve mountain (as shown in Fig.~\ref{fig:Profile80}, taken from Ref.~\cite{cite:Osborne}). With such a tunnel, the physics case would be enhanced with a 20\% larger luminosity at all centre-of-mass energies, and it would be possible to increase the maximum centre-of-mass energy by 5\% with the same RF voltage, should there be an interest to do so. A feasibility assessment for the 100-km version of the TLEP tunnel is ongoing.