\section{Fast rotation histogram per-bunch}
\label{app:frbunches}

Figure~\ref{fig:frbunches} shows the fast rotation histograms between 4 and 5 $\mu s$ after injection for the 8 individual accelerator bunches.

\begin{figure}[bt]
\centering
\subfigure[]{\includegraphics[width=0.42\textwidth]{fig/frs_bunch0}}
\subfigure[]{\includegraphics[width=0.42\textwidth]{fig/frs_bunch1}}
\subfigure[]{\includegraphics[width=0.42\textwidth]{fig/frs_bunch2}}
\subfigure[]{\includegraphics[width=0.42\textwidth]{fig/frs_bunch3}}
\subfigure[]{\includegraphics[width=0.42\textwidth]{fig/frs_bunch4}}
\subfigure[]{\includegraphics[width=0.42\textwidth]{fig/frs_bunch5}}
\subfigure[]{\includegraphics[width=0.42\textwidth]{fig/frs_bunch6}}
\subfigure[]{\includegraphics[width=0.42\textwidth]{fig/frs_bunch7}}
\caption{Fast rotation histograms from 4 to 5 $\mu s$ after injection for the 8 accelerator bunches: (a) to (h) are respectively bunches \#0 to \#7.}
\label{fig:frbunches}
\end{figure}
