%% Boxes
%% \tikzstyle{mybox} = [draw=red, fill=red!2, thick,
%%   rectangle, rounded corners, inner sep=10pt, inner ysep=20pt,
%%   text width=0.9\textwidth, text height=0.3\textheight]
%% \tikzstyle{fancytitle} =[fill=red!90, text=white, rectangle, rounded corners]

%% \begin{tikzpicture}
%%   \draw[] node [mybox] (box) {};
%%   \node[fancytitle] at (box.north) {\Dsize{Dynodes parallel to $\vec{B}$}};
%% \end{tikzpicture}

%% \vspace{-5.5cm}
%% \hspace{1.5cm}
%% \begin{tikzpicture}[]
%%   \draw (0,0) circle (2);
%%   \draw[fill=gray!20] (-0.15,-1) rectangle (0.15,1);
%%   \path (2, -1) node[] {\normalsize{1$^\text{st.}$ dynode}};
%%   \draw[thick,->] (1,-1) to (0.15, 0);
%%   \path (2,2.) node[] {\huge{$\uparrow$}\large{$\vec{B}$}};  
%%   \path (0,-2.5) node[text=red] {\large{Front view}};  
%% \end{tikzpicture}

%% \vspace{-5.3cm}
%% \hspace{10.5cm}
\begin{tikzpicture}[
    %% reverse view
    y=-1cm,
    scale=1.3,
    rotate=90,
    %% style def.
    electron/.style={blue},
    electron multi/.style={blue,style=ultra thin,top color=blue},
    dynode/.style={thick, black, line width=2.5},
    pmt/.style={thick, gray},
    mag/.style={color=gray!10, thick}
  ]

  %% Magnetic lines
  \foreach \i in {0,0.25,...,4}
  \draw[mag,white] (9,3+\i) -- (15,3+\i);

  %% PMT shape
  \draw[pmt] (10.7,4.4) +(-103:0.92195) arc (-103:-13:0.92195);
  \draw[pmt] (10.73684,5.6579) +(106:0.87478) arc (106:9:0.87478);
  \draw[pmt] (11.6,4.2) -- (13.5,4.2);
  \draw[pmt] (11.6,5.8) -- (13.5,5.8);%% -- (14,5.8) -- (11.6,5.8);
  \draw[pmt,dashed] (13.6,5.8) -- (14.3,5.8);
  \draw[pmt,dashed] (13.6,4.2) -- (14.3,4.2);

  %% Photo-cathode
  \definecolor{penColor}{rgb}{1,0.84314,0}
  \draw[pmt] (11.125,5) +(-113:1.625) arc (-113:-247:1.625);

  %% Electron multiplication
  \draw[decorate, decoration={coil,segment length=2mm,amplitude=1mm},->,blue] (9.6,4.4) -- (11.9,5.5);
  \draw[electron] (11.9,5.5) -- (12.2,4.65);
  \draw[electron] (11.9,5.5) -- (12.3,4.65);
  \draw[electron] (11.9,5.5) -- (12.5,4.5);
  \draw[electron] (12.5,4.5) -- (13.1,5.35);
  \draw[electron] (12.5,4.5) -- (13,5.4);
  \draw[electron] (12.5,4.5) -- (12.9,5.45);
  \draw[electron] (12.3,4.65) -- (13,5.4);
  \draw[electron] (12.3,4.65) -- (12.8,5.5);
  \draw[electron] (12.2,4.65) -- (12.7,5.55);
  \draw[electron] (12.2,4.65) -- (12.6,5.6);
  \draw[electron] (12.2,4.65) -- (12.8,5.5);
  \draw[electron] (13.1,5.3) -- (13.5,4.5);
  \draw[electron] (13.1,5.3) -- (13.4,4.5);
  \draw[electron] (13.1,5.3) -- (13.3,4.6);
  \draw[electron] (12.9,5.4) -- (13.2,4.6);
  \draw[electron] (12.6,5.6) -- (13.1,4.7);
  \draw[electron] (12.7,5.5) -- (13.2,4.6);
  \draw[electron] (13.1,5.3) -- (13.2,4.6);
  \draw[electron] (13,5.4) -- (13.1,4.6);
  \draw[electron] (12.9,5.4) -- (13,4.7);
  \draw[electron] (13.1,5.3) -- (13.3,4.5);
  \draw[electron] (13,5.3) -- (13.2,4.6);
  \draw[electron] (12.8,5.4) -- (13.2,4.6);
  \draw[electron] (12.7,5.5) -- (13.6,4.4);
  \draw[electron] (13,5.4) -- (13.4,4.5);
  \shadedraw[electron multi] (13.1,4.6) -- (13.5,5.6) -- (13.95,5.4) -- (13.5,4.5) -- (13.1,4.6);
  %% Dynode
  \draw[dynode] (12.1,4.7) -- (12.7,4.4);
  \draw[dynode,xshift=0.9cm] (12.1,4.7) -- (12.7,4.4);
  \draw[dynode] (11.62,5.64) -- (12.22,5.34);
  \draw[dynode,xshift=0.9cm] (11.62,5.64) -- (12.22,5.34);
  \draw[dynode,xshift=1.8cm] (11.62,5.64) -- (12.22,5.34);

  %% Text
  \path (10.0,4.3) node[text=blue] {\normalsize{$e_\text{pc.}^-$}};
  %% \path (12.2,3.5) node[] {\huge{$\bigodot$}\large{$\vec{B}$}};  
  \path (15.,5) node[] {\large{No Magnetic Field}};  
\end{tikzpicture}

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