diff --git a/EDIT2013poster/contents.tex b/EDIT2013poster/contents.tex index 2daadbb..78791a7 100644 --- a/EDIT2013poster/contents.tex +++ b/EDIT2013poster/contents.tex @@ -2,7 +2,7 @@ \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 + \begin{column}{\onecolwid}% 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 @@ -30,7 +30,7 @@ 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. + Phase-II experiment, using the actual COMET beam line. \begin{figure}[h!] \begin{center} @@ -44,7 +44,7 @@ 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 + construct the first 90 degrees of the muon beam line before extracting to the experimental area. Data taking is expected to start around 2016. \begin{figure}[h!] @@ -59,105 +59,114 @@ %===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} + %\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}{\twocolwid} + \begin{figure}[h!] + \begin{center} + \includegraphics[width=0.90\twocolwid]{../figs/comet/comet_phase1_tracker.pdf} + \end{center} + \caption{Schematic lay out of the COMET Phase I} + \label{fig:phase1} + \end{figure} + \begin{columns}[t,totalwidth=\twocolwid] + \begin{column}{\onecolwid} + \begin{alertblock}{Proton beam} + COMET Phase-I will use an 8 GeV, 0.4 $\mu$A ($2.5 \times 10^{12}$ + protons/sec), 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} + \begin{alertblock}{Muon transportation} + The muon beam line of COMET Phase-I includes the pion capture + section and the muon transport section up to the end of first + $90^o$ bend. A high solenoidal field of 5 T is used in the pion + capture section to capture as many pions as possible. Pions and + muons - produced when pions decay in flight - goes to + a matching section, before going to the transport section with + a 3 T field. A prototype of this system has been built and operated + successfully at Osaka University. - %--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} + Negative muons are selected by a dipole field, which + is created by an additional winding on top of the solenoid + windings. A collimator is placed in front of the detector section + to eliminate high momentum muons (and survival pions). + \begin{figure}[] + \includegraphics[width=0.75\onecolwid]{../figs/comet/mu_momentum_phase1} + \caption{Muon momentum before (upper) and after (lower) the collimator} + \label{fig:mumomentum} + \end{figure} + \end{alertblock} \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} + + \begin{column}{\onecolwid} + \begin{alertblock}{Detectors for COMET Phase-I} + There will be two detectors for two goals of COMET Phase-I: physics + measurements and background measurements. + + Detector for background measurements consists of a solenoid magnet, + 0.8 - 1 T, 5 straw tube tracker layers and a crystal calorimeter. + This is regarded as a final prototype for Phase-II detector. + A lot of detector R\&D activities are ongoing: ECAL + with GSO/LYSO crystals and APD readout; prototype of straw tube + tracker; front end electronic board. + \vskip-2ex + \begin{figure}[!h] + \includegraphics[width=0.95\onecolwid]{../figs/comet/comet_p1_det_bg} + \caption{Concept of the detector for background measurements} + \label{fig:phys_det} + \end{figure} + There are two options for the detector for $\mu-e$ + conversion search. Baseline detector is a cylindrical drift chamber + (CDC), shown in the detector section in Fig. + \ref{fig:phase1}. The CDC would help reducing background rate and + hit rate. The other option is a transverse tracker, in + which the detector for background measurements will be reused. + + The CDC is placed inside a magnetic field of 1 - 1.5 T. The + magnetic field and radial size of the CDC are adjusted to accept + particles with momentum larger than 70 MeV/c. Segmented triger + hodoscope is located before the drift chamber, provides timing + signal and reduces protons hit rate on the chamber. In order to + reach the goal SES, energy resolution requirement for the CDC is + 1.5 MeV at 105 MeV. + \end{alertblock} + \begin{alertblock}{Schedule} + \begin{figure}[!h] + \includegraphics[width=0.95\onecolwid]{../figs/comet/comet_phase1_sched} + %\caption{Technical driven schedule of COMET Phase-I} + \label{fig:sched} + \end{figure} + \end{alertblock} \end{column} \end{columns} - \end{frame} + + %\begin{column}{\onecolwid} + %\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} + + \end{column} + \end{columns} + \end{frame} diff --git a/figs/comet/comet_beamline.png b/figs/comet/comet_beamline.png new file mode 100644 index 0000000..7356271 Binary files /dev/null and b/figs/comet/comet_beamline.png differ diff --git a/figs/comet/comet_p1_det_bg.png b/figs/comet/comet_p1_det_bg.png new file mode 100644 index 0000000..0d4a076 Binary files /dev/null and b/figs/comet/comet_p1_det_bg.png differ diff --git a/figs/comet/comet_p1_det_bg.xcf b/figs/comet/comet_p1_det_bg.xcf new file mode 100644 index 0000000..7db659b Binary files /dev/null and b/figs/comet/comet_p1_det_bg.xcf differ diff --git a/figs/comet/comet_pbeam_config.png b/figs/comet/comet_pbeam_config.png new file mode 100644 index 0000000..ddf27b4 Binary files /dev/null and b/figs/comet/comet_pbeam_config.png differ diff --git a/figs/comet/comet_pbeam_config.xcf b/figs/comet/comet_pbeam_config.xcf new file mode 100644 index 0000000..3291c26 Binary files /dev/null and b/figs/comet/comet_pbeam_config.xcf differ diff --git a/figs/comet/comet_phase1_sched.png b/figs/comet/comet_phase1_sched.png new file mode 100644 index 0000000..028e27f Binary files /dev/null and b/figs/comet/comet_phase1_sched.png differ diff --git a/figs/comet/mu_momentum_phase1.png b/figs/comet/mu_momentum_phase1.png new file mode 100644 index 0000000..8bf10e6 Binary files /dev/null and b/figs/comet/mu_momentum_phase1.png differ diff --git a/figs/comet/mu_stop_phase1.png b/figs/comet/mu_stop_phase1.png new file mode 100644 index 0000000..af1b6ec Binary files /dev/null and b/figs/comet/mu_stop_phase1.png differ