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\section{Introduction}
\subsection{Aims}
Possible objectives:
\begin{itemize}
\item Investigation of RE generation mechanisms.
\item Investigation of RE mitigation mechanisms (Working gas, mitigation during shot termination ( prepare in advance ) )
\item Plasma resistivity as $f:REs \rightarrow \sigma$ (does $kT^{-3/2}$ holds?) ($j\leq n \cdot e \cdot c$)
\item High vs low energy REs (REs popullation vs energy)
\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)
\item Electric field
\item B field
\item Working gas ( after n shots, maybe after glow discharge session )
\item Stabilization System (sudden field variations may lead to enhancement of RE population).
\end{enumerate}
\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 Up to two shots with different conditions, still on H2.
\item Chamber conditioning from H2 to Ar.
\item Up to two shots with similar conditions as 2 but for Ar.
\end{enumerate}
