%--the poster is one beamer frame, so we have to start with:
\begin{frame}[t]
	%--to seperate the poster in columns we can use the columns environment
	\begin{columns}[t] % the [t] options aligns the columns content at the top
		\begin{column}{0.28\paperwidth}% the right size for a 3-column layout
			%--abstract block--------------------------------------------------------
			\begin{alertblock}{Introduction}
				Charged lepton flavor violation (cLFV) has yet to be observed and is
				known to be sensitive to new physics beyond the Standard Model (SM).
				Various extensions of the SM predicts that cLFV occurs at a detectable
				branching ratio. Therefore, from experimental point of view, it is
				attractive to search for cLFV with more powerful beams and better
				detection technologies.

				Among the cLFV processes, $\mu-e$ conversion, a coherent neutrino-less
				conversion of muon to electron in the presence of a nucleus: \muecaz,
				is our interest. We have proposed a new search for $\mu -e$ conversion
				at J-PARC, the E21 experiment - \textcolor{red}{COMET}(
				\textcolor{red}{COherent Muon to Electron Transition}). The single
				event sensitivity (SES) of COMET will be $2.6\times10^{-17}$, which is
				10,000
				times better than that of the current experimental limit 
				set by SINDRUM II at $7\times10^{-13}$.

			\end{alertblock}

			\begin{alertblock}{Staging approach of the COMET}
				In order to realize the COMET experiment, a two-stage approach has been
				taken. COMET Phase-I aims at an intermediate SES of $3\times10^{-15}$,
				which is an improvement of a factor of 100 compares to SINDRUM II. In
				addition, the COMET Phase-I will make direct measurement of the proton
				beam extinction and other potential background sources for the COMET
				Phase-II experiment, using the actual COMET beamline. 

				\begin{figure}[h!]
					\begin{center}
						\includegraphics[width=0.95\onecolwid]{../figs/comet/comet_phase_1}
					\end{center}
					\caption{Schematic layout of the COMET}
					\label{fig:cometscheme}
				\end{figure}
				The COMET Phase-I funding has been approved. Experimental hall
				construction and beam
				line design are in progress, and expected to finish in 2015. The layout
				of the COMET beam line at Hadron Hall, J-PARC is shown in the Fig.
				\ref{fig:cometbeamline}. For the COMET Phase-I, we will
				construct the first 90 degrees of the muon beamline before extracting
				to the experimental area. Data taking is expected to start around 2016.

				\begin{figure}[h!]
					\begin{center}
						\includegraphics[width=0.95\onecolwid]{../figs/comet/comet_beamline}
					\end{center}
					\caption{COMET beam line at Hadron hall}
					\label{fig:cometbeamline}
				\end{figure}
			\end{alertblock}
		\end{column}
		%===rightcolumn=================================================================
		% here the the middle and right column are put into one big column, this allows
		% to change between 2 and 3 column style
		\begin{column}{0.60\paperwidth} %thats the big right column
			%\begin{block}{}
			%===two right columns===========================================================
			% we have to give the total width for the column wich is equal to the sum of
			% two colums and the space between them, this is needed to make shure the two
			% cols take all the space of the 'mother' column 
			%\begin{columns}[t,totalwidth=0.60\paperwidth]
			% and then we put in two normal sized columns
			\begin{column}{0.28\paperwidth}
				\begin{alertblock}{Proton beam}
					COMET Phase-I will use an 8 GeV, 1 $\mu$A, slowly extracted proton beam
					from the J-PARC main ring (MR). One option for the bunch structure of
					the proton beam is shown in Fig \ref{fig:pbeam}.
					\begin{figure}[]
						\includegraphics[width=0.75\onecolwid]{../figs/comet/comet_pbeam_config}
						\caption{COMET proton beam acceleration bunch configuration}
						\label{fig:pbeam}
					\end{figure}
				\end{alertblock}

				%--the Left block-----------------------------------------------------------
				\begin{alertblock}{Pion and muon transportation beam}
					\begin{figure}[]
						\includegraphics[width=0.95\onecolwid]{../figs/comet/comet_p1_det_bg}
						\caption{COMET proton beam acceleration bunch configuration}
						\label{fig:bg_det}
					\end{figure}
				\end{alertblock}
				%\end{block}
				\vskip1ex
				% Methods
				\vskip2ex
			\end{column}
			%--the Right block--------------------------------------------------------------
			\begin{column}{\onecolwid}
				\begin{alertblock}{Detectors for COMET Phase I}
				\end{alertblock}
				\vskip2ex
				\begin{alertblock}{}
					\begin{figure}[]
						\includegraphics[width=0.95\onecolwid]{../figs/comet/comet_p1_det_bg}
						\caption{COMET proton beam acceleration bunch configuration}
						\label{fig:phys_det}
					\end{figure}
				\end{alertblock}
				\vskip2ex
				\begin{block}{References}
					\small{\begin{thebibliography}{99}
							%\bibitem{cdr} The COMET Collaboration, ``Conceptual Design Report for
							%Experimental Search for Lepton Flavor Violating $\mu^--e^-$ 
							%Conversion at
							%Sensitivity of $10^{-16}$ with a Slow-Extracted Bunched Proton Beam
							%(COMET)'', KEK-2009-10 
							\bibitem{loi} The COMET Collaboration, ``Letter of Intent for Phase-I
								of the COMET Experiment at J-PARC'', J-PARC-2012-3
						\end{thebibliography}}
					\end{block}
				\end{column}
				\begin{figure}[h!]
					\begin{center}
						\includegraphics[width=0.95\twocolwid]{../figs/comet/comet_phase1_tracker.pdf}
					\end{center}
					\caption{Schematic lay out of the COMET Phase I}
					\label{fig:phase1}
				\end{figure}
				%\end{columns}
				%--wide text without block------------------------------------------------------
				%Those pictures where drawn with the TikZ package, which is a perfect tool if
				%you want to draw pictures or plot functions or data directly in \LaTeX. To
				%get an impression of the possibilities of this package have a look at its
				%manual \cite{pgf}. It is even possible to wonderfull frames around posters.
				%\vskip2ex
				\vskip3ex
				%--Conclusion block-------------------------------------------------------------
				%   \begin{alertblock}{Conclusion}
				%    As you can see it is possible to make your poster very colorfull. But in 
				%    most cases this will this will overload your poster. If you don't change 
				%    the color settings you will get the default look, which consits of some
				%    shades of the jacobs blue and some decent green highlights. These colors 
				%    where chosen carefully to keep a consistent look of the poster. The 
				%    \emph{cpbgposter} style is installed our office computers, so you should be
				%    able to compile this example out of the box with pdflatex. If you want to
				%    work on your computer make sure that you have a recent TeX distribution 
				%    (TeXlive 2008, Miktex) and download the beamerthemecpbgposter.sty file from
				%    our teamwork page and put it in your local TeX directory.
				%
				%    If you have any questions, critics, ideas or if you just want to praise the
				%    awesome dude who created this insanely great poster style then don't
				%    hastitate to write an email to \emph{j.liebers@jacobs-university.de}
				%% guess what this command is god for!
				%    \makeruleinbox
				%% it works, but causes some underfull/overfull \hbox warnings
				%    \begin{center}
				%     {\huge\vskip-1ex
				%     {\color{nred}H}{\color{norange}a}{\color{nyellow}p}
				%     {\color{ngreen}p}{\color{dblue}y}\\
				%     \TeX'ing!}
				%    \end{center}
				%   \end{alertblock}
				\end{column}
			\end{columns}
		\end{frame}
