=====回路図=====

circuitikz を使ってみた．
インクルードは以下の通り．

<code latex>
\usepackage{circuitikz}
</code>

MPPC の模式図を書いたのが以下
<code latex>
\begin{figure}[h]
\centering
\begin{circuitikz}
\ctikzset{bipoles/resistor/height=0.15}
\ctikzset{bipoles/resistor/width=0.4}
\draw(1.5,5)
	to[short, o-](1.5,4);
\draw(1.5,4)
	to[short](0,4);
\draw(1.5,4)
	to[short](3,4);
\draw(0,4)
	to[short](0,3.5)
	to[european resistor](0,2)
	to[D*] (0,1)
	to[short](0,0.5);
\draw(1,4)
	to[short](1,3.5)
	to[european resistor](1,2)
	to[D*] (1,1)
	to[short](1,0.5);
\draw(2,4)
	to[short](2,3.5)
	to[european resistor](2,2)
	to[D*] (2,1)
	to[short](2,0.5);
\draw(3,4)
	to[short](3,3.5)
	to[european resistor, l=Quenching resistors](3,2)
	to[D*, l=APD pixels] (3,1)
	to[short] (3,0.5);
\draw(0,0.5)
	to[short](1.5,0.5);
\draw(3,0.5)
	to[short](1.5,0.5);
\draw(1.5,0.5)
	to[short, -o](1.5,-0.5);
\end{circuitikz}
\caption[Schematic circuit of one MPPC]{Schematic circuit of one MPPC.}
\end{figure}
</code>

''short'' が導線， ''european resistor'' が抵抗， ''D*'' がダイオードなど．．．