\def\GWslide{\slide{Probes@GOLEM: Combined Ball-pen probe and Langmuir probe @ North-East-Down port}
{
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\GWig{width=\tw}{Experiments/EdgePlasmaPhysics/ParticleFlux/BallPenProbe/Slides/18BasicSetup/fig/ExpSetup-BPP.png}}
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{
\bi
%\footnotesize
\im Combined probe head composed of the Ball Pen Probe and the single Langmuire probe.
\im Direct measurements of plasma potential $\Phi$ and the electron temperature $T_e$.
\im The DC voltage (from -140 to + 140 V) is applied to a probe on the shot to
shot basis and the temporal evolution of the probe current is recorded with temporal resolution 1 us.
\ei
}
}
}