%==============================================================================
%== template for LATEX poster =================================================
%==============================================================================
%
%--A0 beamer slide-------------------------------------------------------------
\documentclass[final]{beamer} % use beamer
\usepackage[orientation=portrait,
            size=a0,          % poster size
            scale=1.35         % font scale factor
           ]{beamerposter}    % beamer in poster size
%
%--some needed packages--------------------------------------------------------
\usepackage[american]{babel}  % language 
\usepackage[utf8]{inputenc}   % std linux encoding
\usepackage{booktabs}
\usepackage{multirow}
%
%==The poster style============================================================
\usetheme{cpbgposter}            % our poster style
%--set colors for blocks (without frame)---------------------------------------
  \setbeamercolor{block title}{fg=ngreen,bg=white}
  \setbeamercolor{block body}{fg=black,bg=white}
%--set colors for alerted blocks (with frame)----------------------------------
%--textcolor = fg, backgroundcolor = bg, dblue is the jacobs blue
  \setbeamercolor{block alerted title}{fg=white,bg=dblue!70}%frame color
  \setbeamercolor{block alerted body}{fg=black,bg=dblue!10}%body color
%
\usecaptiontemplate{
\small
\structure{\insertcaptionname~\insertcaptionnumber:}
\insertcaption}
%==Titel, date and authors of the poster=======================================
%\title{Template for \LaTeX poster using the\\
       %Computational Physics and Biophysics Group style}
%\title{Study of Muon Capture \\
%for $\boldsymbol{\mu^--e^-}$ Conversion Experiments}
\title{A Search for $\boldsymbol{\mu-e}$ Conversion \\
\vskip0.5ex
and a Study of Muon Capture Backgrounds}
\author{Tran Hoai Nam}
\institute{Department of Physics, Graduate School of Science, Osaka Univerity}
\date{\today}
%
%==some usefull qm commands====================================================
%  |x>
\newcommand{\ket}[1]{\left\vert#1\right\rangle}
%  <x|
\newcommand{\bra}[1]{\left\langle#1\right\vert}
%  <x|y>
\newcommand{\braket}[2]{\left< #1 \vphantom{#2}\,
                        \right\vert\left.\!\vphantom{#1} #2 \right>}
%  <x|a|y>
\newcommand{\sandwich}[3]{\left< #1 \vphantom{#2 #3} \right|
                          #2 \left|\vphantom{#1 #2} #3 \right>}
%  d/dt
\newcommand{\ddt}{\frac{d}{dt}}
%  D/Dx
\newcommand{\pdd}[1]{\frac{\partial}{\partial#1}}
%  |x|
\newcommand{\abs}[1]{\left\vert#1\right\vert}
%  k_{x}
\newcommand{\kv}[1]{\mathbf{k}_{#1}}
\newlength{\sepwid}
\newlength{\onecolwid}
\newlength{\twocolwid}
\setlength{\sepwid}{0.04\paperwidth}
\setlength{\onecolwid}{0.28\paperwidth}
\setlength{\twocolwid}{0.60\paperwidth}
%==============================================================================
%==the poster content==========================================================
%==============================================================================
\begin{document}
%--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{block}{Introduction - Searches for cLFV}
				\begin{itemize}
						\item Charged lepton flavor violation (cLFV) is forbidden in the
							Standard Model. However, it is predicted to occur in various
							extensions of the model. Experimental observation
							of cLFV process is a clear evidence of new physics beyond the
							SM.
						%\ref{fig:SMmeg}).
						%\begin{figure}[h!]
						%\begin{center}
						%\includegraphics[width=0.8\onecolwid]{figs/SM-meg2}
						%\end{center}
						%\caption{One of the diagrams of massive neutrino contributions to
						%$\mu \rightarrow e\gamma$} 
						%\label{fig:SMmeg}
						%\end{figure}
						\item Two major experiments are going to start to search for the
							cLFV \textcolor{red}{$\mu-e$ conversion}: COMET and Mu2e.  
							%\vskip1ex
							\begin{figure}[h!]
								\begin{center}
									\includegraphics[width=0.95\onecolwid]{figs/mueconv}
								\end{center}
								\caption{What and Why $\mu-e$ conversion}
								\label{fig:mueconv}
							\end{figure}
						\item  The COMET stands for COherent Muon to Electron Transition.
							It has been approved by J-PARC in 2009 as experiment J-PARC E21.
							The experiment  will search for $\mu-e$ conversion on aluminum
							target with a single-event sensitivity 10,000 times better
							than the current limit. The COMET uses staging approach with two
							phases \cite{loi}:
							\begin{itemize}
								\item [-] COMET Phase I (physics run in 2017): background study
									for Phase II, and search for $\mu-e$ conversion with a
									sensitivity of $\color{red}3.1\times10^{-15}$
								\item [-] COMET Phase II (physics run in 2019): search for
									$\mu-e$ conversion at a sensitivity of
									$\color{red}3\times10^{-17}$
									\begin{figure}[h!]
										\begin{center}
											\includegraphics[width=0.95\onecolwid]{figs/cometscheme}
										\end{center}
										\caption{Schematic lay out of the COMET Phase I and COMET
										Phase II}
										\label{fig:cometscheme}
									\end{figure}
							\end{itemize}
						%\item Event signal of $\mu - e$ conversion: a single mono-energetic
							%electron at 105 MeV
							\item One issue of the experiment at Phase I: \textcolor{red}
								{hit rate on the tracking detectors}. In order to optimize the
								targets and the absorber, a study of charged particles,
								especially protons, emitted after muon capture is needed.
								\begin{figure}[h!]
								\centering
								\includegraphics[width=0.88\onecolwid]{figs/issue2}
								\caption{Concept of the tracking detectors}
								\label{fig:issue}
							\end{figure}
						\item There are \textcolor{red}{no experimental data}, in the
							\textcolor{red}{relevant energy range}, on the 
							products of muon capture from \textcolor{red}{Al, and Ti target}.
							Both COMET and Mu2e are using extrapolated data from a
							measurement on an active Si target in 1968.
							\begin{figure}[h!]
								\includegraphics[width=0.85\onecolwid]{figs/si-proton}
								\caption{Charged particles spectrum after muon capture on
								Si$^{28}$ \cite{sidata}}
								\label{fig:sidata}
							\end{figure}
							\end{itemize}
						\end{block}

						%% The proton measurement experiment
					\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}{The new measurement of charged particles emission
							from muon capture}
							\begin{itemize}
								\item A joint collaboration between COMET and Mu2e
								\item Goals of the experiment:
									\begin{itemize}
										\item[$\bullet$] measure \textcolor{red}{rate and energy
											spectra} of the charged
											particles (p, d, $\alpha$) emitted after muon capture on
											some targets: 
											\begin{itemize}
												\item [-] Al: default target of COMET and Mu2e
												\item [-] Ti: possible target for future $\mu-e$
													conversion experiments
												\item [-] Si: active target, for cross-checking against
													previous experiment, and studying the energy loss of
													charged particles inside the targets
											\end{itemize}
										\item[$\bullet$] required precision: \textcolor{red}{5\%} 
											for both the rate and the
											energy spectra in  the range from 2.5 $-$ 12 MeV
									\end{itemize}
								\item Will be conducted at TRIUMF (Canada) and PSI
									(Switzerland).  
							\end{itemize}
						\end{block}
							\vskip1ex
		% Methods
		\begin{block}{Methods}
				\begin{figure}[]
					\includegraphics[width=0.95\twocolwid]{figs/setupa}
					\caption{Experimental setup: schematic view (left) and image (right)}
					\label{fig:setup}
				\end{figure}
			\begin{minipage}[t]{\onecolwid}
				\begin{itemize}
					\item Low momentum muon beam: to ensure a high rate of stopped
						muons, and a well determined range of muons in the targets. A
						cloud muon of 30 $-$ 34 MeV/c from a surface muon channel is
						optimal.
					\item The charged particles are measured by dE/dx method
						by two pairs of silicon detectors. Active area of each silicon
						detector is 5$\times$5 cm$^2$, the dE detectors are 65 $\mu m$
						thick, and the E detectors are 1500 $\mu m$ thick.
				\end{itemize}
			\end{minipage} % Do not put another blank line after this line because
			%that will mess up the alignment of the two minipages
			\begin{minipage}[t]{\onecolwid} 
				\begin{itemize}
					\item Muon normalization: muonic X-ray measurement by a germanium
						detector.
					\item Correction for energy loss of charged particles in the
						targets: using a response function obtained from the use of the
						active silicon target, where the energy loss can be measured. A
						waveform digitizer will be used to readout signals from the
						active target.
				\end{itemize}
			\end{minipage}
		\end{block}
		\vskip2ex
%===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}
		%--the Left block-----------------------------------------------------------
		\begin{block}{Calculations}
			\begin{itemize}
				\item Using Geant4, with assumptions:
					\begin{itemize}
						\item [$\bullet$] Muon momentum 30 MeV/c, momentum spread 5\%.
						\item [$\bullet$] Muon intensity: 10$^4$ muons/sec. 
						\item [$\bullet$] Proton emission rate is 0.15 per muon capture,
							the same value as that is being used in COMET designing
							calculations
						\item [$\bullet$] Energy resolution (FWHM) of silicon detectors
							are: 140 keV for the 65 $\mu m$-thick detectors, and 40 keV for
							the 140 $\mu m$-thick detectors.
						\item [$\bullet$] Thickness of the beam counter scintillator: 0.5 mm
					\end{itemize}
				\item Simulation results of particle identification and rate
					estimation is shown in Figure \ref{fig:dEdx} and Table
					\ref{tb:rates}.
			\end{itemize}
			\vskip2ex
			\begin{figure}[]
				\includegraphics[width=0.95\onecolwid]{figs/dEdx}
				\caption{Particle identification with two silicon detectors}
				\label{fig:dEdx}
			\end{figure}
		\end{block}
   \end{column}
%--the Right block--------------------------------------------------------------
		\begin{column}{\onecolwid}
			\begin{block}{Calculations (cont.)}
					\begin{table}[h!]
						\begin{center}
							\scalebox{0.75}{
							\begin{tabular}{cccc}
							\toprule
								Target 		& \% Stopping & Event rate (Hz) & Event rate (Hz) \\ 
								thickness ($\mu$m)& in target & All particles & Protons \\ 
								\midrule
								50  & 2  & 8.1 	& 1.0   \\ 
								100 & 16 & 21.3 & 1.5  \\ 
								150 & 38 & 39.9 & 2.1  \\ 
								200 & 53 & 51.1 & 2.4  \\ 
								\bottomrule
							\end{tabular}
							}
						\end{center}
						\caption{Estimated event rates for various targets of different
						thickness. }
						\label{tb:rates} 
					\end{table}
				\end{block}
			\vskip2ex
			\begin{block}{Plan}
				\begin{itemize}
					\item July 2012: submitted the proposal to TRIUMF as experiment
						S1371, requested 36 shifts (3 weeks) beam time
					\item September 2012: the proposal was accepted with high priority
					\item Late November 2012: beam test
					\item Early 2013: physics run, 36 shifts
					\item A proposal will be submitted to PSI
				\end{itemize}
			\end{block}
			\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
					\bibitem{sidata}  S. E. Sobottka and E. L. Wills, ``Energy Spectrum
						of Charged Particles Emitted Following Muon Capture in Si$^{28}$'',
						Phys. Rev. Lett.  \textbf{20} (1968) 596-598.
				\end{thebibliography}}
			\end{block}
   \end{column}
  \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}
\end{document}
