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%\title[GEANT4/EGS5]{GEANT4/EGS5}

\title{Trigger update}

\author{Sho Uemura}
%\institute[SLAC]{SLAC\\}
\date[December 13, 2011]

\begin{document}

%\begin{frame}
%  \titlepage
%\end{frame}

\begin{frame}{Recent progress}
	\begin{itemize}
		\item Improved trident generation (Takashi)
			\begin{itemize}
				\item Full trident process (Bethe-Heitler and radiative), with minimal cuts suitable for trigger simulation
			\end{itemize}
		\item More statistics
			\begin{itemize}
				\item Geant4 beam background: $5\times 10^7$ bunches
				\item EGS5 beam background: $5\times 10^6$ bunches
				\item Trident background: $5\times 10^7$ bunches
				\item All of these are (or will be soon) in hps\_data in one-bunch-per-event stdhep format, as will events with tridents overlaid with beam background
			\end{itemize}
		\item Tested new Geant4 EM physics list for 9.4: ``option4''
			\begin{itemize}
				\item Gives backgrounds different from both Geant4.9.3 and EGS5
				\item For now, stick with EGS5 and Geant4.9.3
			\end{itemize}
	\end{itemize}
\end{frame}

\begin{frame}{Trigger rates (same as shown at 12/8 meeting)}
	%\begin{columns}
	%\column{.3\textwidth}
	%\begin{itemize}
	%	\item Analog signal is sampled every 4 ns
	%\end{itemize}
	%\column{.7\textwidth}
	%\begin{tabular}{|c|p{.15\textwidth}|p{.15\textwidth}|p{.15\textwidth}|}
	\begin{tabular}{|l|r|r|r|}
		\hline
		Background sample & Bunch count & Trigger count & Rate (kHz)\\
		\hline
		BH	& $5\times 10^5$	& 4	& 4	\\
		Geant4	& $5\times 10^5$	& 24	& 24	\\
		Geant4+BH	& $5\times 10^5$	& 32	& 32	\\
		EGS5	& $2\times 10^5$	& 1	& 3	\\
		EGS5+BH	& $2\times 10^5$	& 11	& 28	\\
		Geant4 (``opt4'')	& $5\times 10^5$	& 0	& 0	\\
		Geant4 (``opt4'')+BH	& $5\times 10^5$	& 4	& 4	\\
		\hline

	\end{tabular}
	%\end{columns}
	\end{frame}

	\begin{frame}{Next}
		\begin{itemize}
			\item Finish FADC simulation details
				\begin{itemize}
					\item 5-bit energy sum means (2.2 GeV/$2^5$)$\approx$70 MeV resolution --- means clustering algorithm will need to use higher thresholds (should be okay)
				\end{itemize}
			\item Run SLIC on all the background samples
			\item Simulate A' trigger efficiency with time evolution
			\item Simulate A' trigger efficiency for other A' masses
		\end{itemize}
	\end{frame}

	\end{document}