deletions | additions       diff --git a/sectionFACILITY_OPER.tex b/sectionFACILITY_OPER.tex  index 5935ba1..9d8b297 100644  --- a/sectionFACILITY_OPER.tex  +++ b/sectionFACILITY_OPER.tex 
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More frequently the weekly machine development shifts are provided for user operation as so called ``bonus time''.  \subsection{Elettra}   Elettra~\cite{Bocchetta_1995} Elettra~\cite{Karantzoulis_2015}  operates for about 75\% of user dedicated time at 2$\,$GeV while for the remaining 25\% at 2.4$\,$GeV; being the only facility to operate at two energies in top-up. The main operating modes are multi-bunch with a dark gap of 42$\,$ns and hybrid   (at 20\% of the total user beam time) with a single-bunch in the middle of the dark gap.   The operating intensities are 310$\,$mA at 2$\,$GeV and 160$\,$mA at 2.4$\,$GeV with a 5$\,$mA single-bunch added when in hybrid mode.  
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