\documentclass{../signatures} \labacronym{JOS} \labtitle{Josephson Junction} \begin{document} \maketitle \names \prelab \begin{enumerate} \item What is a Josephson Junction? \item What is a Cooper Pair? \item How does the DC Josephson effect work? What is the AC Josephson effect? How are they useful? \item Why is it important to know the number 2e/h; what does it mean? \item How do you construct the Josephson Junction used in this experiment? (Hint 4 wire junction) \item Explain how you remove the junction assembly from the probe and put it back in. Which way do you turn the set screws? \item Did you notify a professor or GSI about filling the liquid helium tank one day before starting the lab? \\[36pt] \end{enumerate} \prelabsignatures \midlab \begin{enumerate} \item Show your photo of the DC effect with calibrated axis and photo of the AC effect, with calibrated axis, to a GSI. Also you present your measured corrected value for 2$e/h$, with uncertainty, to an instructor and ask for a signature. \\[36pt] \end{enumerate} Staff Signature $\rule{8cm}{0.15mm}$ Date $\rule{5cm}{0.15mm}$ \\[24pt] %\midlabsignatures{3} \newpage \checkpointsection \\[12pt] \begin{enumerate} \item \checkp{Low-Frequency Oscillator} \item \checkp{Steps} \item \checkp{DC Effect} \item \checkp{AC Effect} \item \checkp{Josephson Constant} \end{enumerate} \end{document}