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\section{Introduction}
http://golem.fjfi.cvut.cz/wiki/Experiments/RunAwayElectronStudies/Library/CASTOR_GOLEM/Svoboda2019_Article_OperationalDomainInHydrogenPla.pdf
\href{http://golem.fjfi.cvut.cz/wiki/Experiments/RunAwayElectronStudies/Library/CASTOR_GOLEM/Svoboda2019_Article_OperationalDomainInHydrogenPla.pdf}{RE Studies}
https://en.wikipedia.org/wiki/Paschen%27s_law
\href{https://en.wikipedia.org/wiki/Paschen%27s_law}{Paschen Law}
\subsection{Aims}
Possible objectives:
\begin{itemize}
\item Investigation of RE on H2 and Ar.
\end{itemize}
\section{Aparatus}
Possible diagnostics:
\begin{enumerate}
\item Scintillation detector plus photo-multiplier (NaI(Tl), YAP(Ce)). Hits / deposited energy.
\item PH32-based detector (Strip detector).
\item Timepix (SXR + HXR? Timepix(3?) CdTe?)
\item Dosimeters
\item Cherenkov Detector?
\item Spectrometer(s)
\end{enumerate}
Possible parameters:
\begin{enumerate}
\item Pressure, keep low ($5\ mPa < P \leq 10\ mPa$, $14\ mPa$).
\item Electric field, keep low for low Plasma current ($440 \geq E\ V$, $325\ V$).
\item B field ($\sim 1300\ V$, $1200\ V$).
\item Working gas (H2, Ar or He).
\item Stabilization System.
\end{enumerate}
Reference shots:
\begin{itemize}
\item http://golem.fjfi.cvut.cz/shots/29398/
\item http://golem.fjfi.cvut.cz/shots/27762/
\item http://golem.fjfi.cvut.cz/shots/27738/
\item http://golem.fjfi.cvut.cz/shots/27745/
\item http://golem.fjfi.cvut.cz/shots/27751/
\item http://golem.fjfi.cvut.cz/shots/27756/
\item http://golem.fjfi.cvut.cz/shots/27757/
\item http://golem.fjfi.cvut.cz/shots/29364/
\item http://golem.fjfi.cvut.cz/shots/31052/
\item \href{http://golem.fjfi.cvut.cz/shots/29398/}{29398}
\item \href{http://golem.fjfi.cvut.cz/shots/27762/}{27762}
\item \href{http://golem.fjfi.cvut.cz/shots/27738/}{27738}
\item \href{http://golem.fjfi.cvut.cz/shots/27745/}{27745}
\item \href{http://golem.fjfi.cvut.cz/shots/27751/}{27751}
\item \href{http://golem.fjfi.cvut.cz/shots/27756/}{27756}
\item \href{http://golem.fjfi.cvut.cz/shots/27757/}{27757}
\item \href{http://golem.fjfi.cvut.cz/shots/29364/}{29364}
\item \href{http://golem.fjfi.cvut.cz/shots/31052/}{31052}
\end{itemize}
\section{Methodology}
Functional areas:
\begin{itemize}
\item Background plasma characterization by means of electrostatic probes.
\item Plasma column stabilization system.
\item RE count and energy distribution measurements.
\item Working gas manipulation.
\end{itemize}
Session schedule:
\begin{enumerate}
\item Reference shot on H2.
\item Several shots with different conditions, still on H2.
\item Chamber conditioning from H2 to Ar.
\item Several shots with similar conditions as 2 but for Ar.
\end{enumerate}