% $Header: /cvsroot/latex-beamer/latex-beamer/solutions/generic-talks/generic-ornate-15min-45min.en.tex,v 1.5 2007/01/28 20:48:23 tantau Exp $

%to have short section names on top of each slide
%\documentclass[red,compress]{beamer}
\documentclass[red]{beamer}

% This file is a solution template for:

% - Giving a talk on some subject.
% - The talk is between 15min and 45min long.
% - Style is ornate.



% Copyright 2004 by Till Tantau <tantau@users.sourceforge.net>.
%
% In principle, this file can be redistributed and/or modified under
% the terms of the GNU Public License, version 2.
%
% However, this file is supposed to be a template to be modified
% for your own needs. For this reason, if you use this file as a
% template and not specifically distribute it as part of a another
% package/program, I grant the extra permission to freely copy and
% modify this file as you see fit and even to delete this copyright
% notice. 


\mode<presentation>
{
  %\usetheme{Warsaw}
  \usetheme{Warsaw}
  %\usecolortheme{lily}

  % or ...
  %\useoutertheme{split}

  \setbeamercovered{transparent}
  %\pagestyle{plain}

  % or whatever (possibly just delete it)
}

\usepackage[english]{babel}
% or whatever
\usepackage[dvips]{}

\usepackage[latin1]{inputenc}
% or whatever

\usepackage{times}
\usepackage[T1]{fontenc}

\usepackage{wasysym}

\input{../colours.tex}

% Or whatever. Note that the encoding and the font should match. If T1
% does not look nice, try deleting the line with the fontenc.

\begingroup
	\def\facewith#1{$\bigcirc\mskip-13.3mu{}^{..}
	\mskip-11mu\scriptscriptstyle#1\ $}
	\xdef\frowny{\facewith\frown}
	\xdef\smiley{\facewith\smile}
	\xdef\neutry{\facewith-}
\endgroup

\title%[short title] % (optional, use only with long paper titles)
{Charge Sharing Studies With a Laser Setup}

\subtitle
{} % (optional)

\author[A.-M. Magnan] % (optional, use only with lots of authors)
{P. Dauncey, A.-M. Magnan, M. Noy\\
Imperial College London
% - Use the \inst{?} command only if the authors have different
%   affiliation.
}
%\institute[ICL] % (optional, but mostly needed)
%{
%\inst{1}
%Imperial College London
%}

\date[RAL, 20/05/2008] % (optional)
{20/05/2008, Calice-Maps RAL}

\subject{Talks}
% This is only inserted into the PDF information catalog. Can be left
% out. 



% If you have a file called "university-logo-filename.xxx", where xxx
% is a graphic format that can be processed by latex or pdflatex,
% resp., then you can add a logo as follows:

\pgfdeclareimage[height=0.5cm]{university-logo}{/home/magnan/TALKS/latex/logo_imperial_college_london.png}
\logo{\pgfuseimage{university-logo}}



% Delete this, if you do not want the table of contents to pop up at
% the beginning of each subsection:
\AtBeginSection[]
{
  \begin{frame}<beamer>{Outline}
    \tableofcontents[currentsection]%,currentsubsection]
  \end{frame}
}


% If you wish to uncover everything in a step-wise fashion, uncomment
% the following command: 

%\beamerdefaultoverlayspecification{<+->}


\begin{document}

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

%\begin{frame}{Outline}
%  \tableofcontents
  % You might wish to add the option [pausesections]
%\end{frame}


\section[Setup]{The setup}
\subsection[Introduction]{Introduction}

\begin{frame}
\frametitle{Laser setup}

\begin{itemize}
   \item Many thanks to Matt for setting everything up, and Paul for taking the data !
   \item In the following: 
   \begin{itemize}
      \item 10 bunch crossings (BX) per bunch train (BT),
      \item laser fires at 2.5\,$\mu$s (7$^{th}$ BX),
      \item 1000 BT per position,
      \item X-Y stage moved by 5\,$\mu$m steps, in x and y,
      \item $150\times 150 \mu$m$^2$ area scanned, centred on a given pixel,
      \item several threshold values studied,
      \item x-y 2D-histogram with bin content = signal recorded \textcolor{red}{in the studied pixel} when the laser was fired in (x,y).
       \item display the results for all 9 pixels.
   \end{itemize}
\end{itemize}
\end{frame}

\subsection{Results per threshold value}

\begin{frame}
\frametitle{Random pixels, low threshold}

%\vspace*{-4mm}
\begin{center}
Centre pixel: 60,29 (Peds [-8,-11,-2,13,16,-53,12,9,47] TU)
\end{center}
\begin{columns}
\column{5cm}
   \begin{block}{Threshold 60 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{Thresh60_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5cm}
   \begin{block}{Threshold 80 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{Thresh80_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\begin{frame}
\frametitle{Higher threshold : expected behaviour (!)}

\vspace*{-4mm}
\begin{columns}
\column{5.5cm}
   \begin{block}{Threshold 80 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{Thresh80_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{Threshold 85 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{Thresh85_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\begin{frame}
\frametitle{Results, continued...}

\vspace*{-4mm}
\begin{columns}
\column{5.5cm}
   \begin{block}{Threshold 85 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{Thresh85_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{Threshold 90 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{Thresh90_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\begin{frame}
\frametitle{Results, continued...}

\vspace*{-4mm}
\begin{columns}
\column{5.5cm}
   \begin{block}{Threshold 90 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{Thresh90_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{Threshold 100 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{Thresh100_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\begin{frame}
\frametitle{Results, continued...}

\vspace*{-4mm}
\begin{columns}
\column{5.5cm}
   \begin{block}{Threshold 110 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{Thresh110_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{Threshold 120 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{Thresh120_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\subsection{Lower threshold ring effect}

\begin{frame}
\frametitle{Low threshold: more sensitive outside of the pixel ??}

\vspace*{-4mm}
\begin{columns}
\column{5.5cm}
   \begin{block}{Threshold 20 (4) and 40 (24) TU}
      \begin{center}
      \includegraphics[width=0.5\textwidth,height=0.5\textwidth]{Thresh20_zoom.png}
      \includegraphics[width=0.5\textwidth,height=0.5\textwidth]{Thresh40_zoom.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{Threshold 60 (13) TU, pixel 61,30}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{Thresh60_zoom8.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\subsection{Samplers}
\begin{frame}
\frametitle{Random sampler pixels, low thresholds}

%\vspace*{-4mm}
\begin{center}
Centre pixel: 103,39
\end{center}
\begin{columns}
\column{5cm}
   \begin{block}{Threshold 40 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{Sampler103_39_Thresh40.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5cm}
   \begin{block}{Threshold 80 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{Sampler103_39_Thresh80.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}
\begin{frame}
\frametitle{Random sampler pixels, high thresholds}

%\vspace*{-4mm}
\begin{columns}
\column{5.5cm}
   \begin{block}{Threshold 120 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{Sampler103_39_Thresh120.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{Threshold 160 TU}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{Sampler103_39_Thresh160.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}


\section[Full simulation]{Comparison with full simulation}

\begin{frame}
\frametitle{Full simulation, by comparison ... }

\vspace*{-4mm}
\begin{columns}
\column{5.5cm}
   \begin{block}{GDS full simulation}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{3Dsimu_0_3x3_50u_4d_DPW_12epi.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{GDS assuming perfect p-well}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{3Dsimu_0_50u_4d_1_8_GDS1_perfectPW.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\begin{frame}
\frametitle{Full simulation, by comparison ... , continued...}

\vspace*{-4mm}
\begin{columns}
\column{5.5cm}
   \begin{block}{GDS full simulation}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{3Dsimu_1_3x3_50u_4d_DPW_12epi.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{GDS assuming perfect p-well}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{3Dsimu_1_50u_4d_1_8_GDS1_perfectPW.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\begin{frame}
\frametitle{Full simulation, by comparison ... , continued...}

\vspace*{-4mm}
\begin{columns}
\column{5.5cm}
   \begin{block}{GDS full simulation}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{3Dsimu_2_3x3_50u_4d_DPW_12epi.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{GDS assuming perfect p-well}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.15\textwidth]{3Dsimu_2_50u_4d_1_8_GDS1_perfectPW.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\section[Uniformity]{Response uniformity per threshold}

\subsection{Uniformity in x}

\begin{frame}
\frametitle{Uniformity in x: duplicating the central pixel}
\begin{columns}
\column{5.5cm}
   \begin{block}{Threshold 60 TU : double counting}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{Gap_Thresh60_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{Threshold 80 TU : double counting}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{Gap_Thresh80_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\begin{frame}
\frametitle{Uniformity in x, continued...}
\begin{columns}
\column{5.5cm}
   \begin{block}{Threshold 85 TU : inefficiencies near the edges}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{Gap_Thresh85_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{Threshold 90 TU : inefficiencies near the edges}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{Gap_Thresh90_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\begin{frame}
\frametitle{Uniformity in x, continued...}
\begin{columns}
\column{5.5cm}
   \begin{block}{Threshold 100 TU : inefficiencies near the edges}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{Gap_Thresh100_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{Threshold 110 TU : inefficiencies near the edges}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{Gap_Thresh110_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}
\subsection{Uniformity in y}

\begin{frame}
\frametitle{Uniformity in y: duplicating the central pixel}
\begin{columns}
\column{5.5cm}
   \begin{block}{Threshold 60 TU : double counting}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{GapY_Thresh60_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{Threshold 80 TU : inefficiencies near the edges}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{GapY_Thresh80_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\begin{frame}
\frametitle{Uniformity in y, continued...}
\begin{columns}
\column{5.5cm}
   \begin{block}{Threshold 85 TU : inefficiencies near the edges}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{GapY_Thresh85_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{Threshold 90 TU : inefficiencies near the edges}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{GapY_Thresh90_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\begin{frame}
\frametitle{Uniformity in y, continued...}
\begin{columns}
\column{5.5cm}
   \begin{block}{Threshold 100 TU : inefficiencies near the edges}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{GapY_Thresh100_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{Threshold 110 TU : inefficiencies near the edges}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{GapY_Thresh110_colz.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\section[Edges]{Study of the edges}


\begin{frame}
\frametitle{Rising and falling edges for central pixel}
\begin{columns}
\column{5.5cm}
   \begin{block}{Threshold 80 TU: rising edge}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{RiseEdge_Thresh80.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\column{5.5cm}
   \begin{block}{Threshold 80 TU: falling edge}
      \begin{center}
      \includegraphics[width=1.\textwidth,height=1.\textwidth]{FallEdge_Thresh80.png}
%,height=0.9\textwidth]{}
      \end{center}
   \end{block}
\end{columns}

\end{frame}

\begin{frame}
\frametitle{Fit with $\int_{a}^{b}{Gauss(m,\sigma)}$ = $c\times TMath::Erf(\frac{x-m}{\sqrt{2}\times \sigma})(+c)$}

\begin{table}
\begin{tabular}{|c|c|c|}
\hline
Threshold (TU) & $\sigma_{rise}$ ($\mu$m) & $\sigma_{fall}$ ($\mu$m) \\
\hline
40 & $4.92 \pm 0.23$ & $3.96 \pm 0.28$ \\
60 & $2.91 \pm 0.16$ & $2.98 \pm 0.16$ \\
80 & $4.15 \pm 0.20$ & $2.88 \pm 0.16$ \\
85 & $5.92 \pm 0.49$ & $3.67 \pm 0.18$ \\
90 & $5.29 \pm 0.42$ & $3.52 \pm 0.14$ \\
\hline
\end{tabular}
\end{table}

$\Rightarrow$ Upper limit on laser spot size: 3\,$\mu$m.

\end{frame}


\begin{frame}
\frametitle{Conclusions}

\begin{itemize}
   \item Charge spread is very limited.
   \item Charge collection uniform (or saturated ?) inside the pixel.
   \item At very low threshold: appearance of a ring more efficient than the inside.
   \item Sharp loss of efficiency at increasing threshold (within 5\,TU $\Rightarrow$ 40\% loss).
   \item Full simulation shows diodes whatever scenario : not compatible with observation ?
   \item A threshold of about 65\,TU (compared to ``absolute 0'') gives best performance in terms of uniformity in x and y if we believe the pixels tested.
   \item Laser size estimated at 3 $\mu$m.
\end{itemize}

\end{frame}

%\subsection{}




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%\includegraphics[width=0.5\textwidth,height=0.45\textwidth]{../graphics/betaSource_hits.png}
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\end{document}


