%info@http:://golem.fjfi.cvut.cz/wiki/root/GW4reports


\def\ControlRoomLive{
\label{sec:live}
For successful remote operation it is paramount to provide the remote group with
a comprehensive, yet easily understandable overview of the current status of the
experiment. A secondary goal is to provide an experience as close as possible to
being on-site. This is facilitated by the Live real-time view web-page.
\par
The
machine status overview is composed of the engineering scheme coupled with
gauges and other info-boxes displaying up-to-date values of the capacitor
voltages, pressure and type of the working gas in the chamber and a general description
of the current phase of discharge preparation. During the preparation of the
discharge the gauges display the target parameter range in green and the remote
teem can see in real-time e.g. the charging of capacitors.
\par
\begin{figure}[ht]
  \centering
\GWigpw{0.5}{Handling/Controll/StandardUser/RemoteControl/Tabs/vOG/ControllRoom_Live/fig/fig.png}
	\caption{Remote control interface of the GOLEM tokamak. The control room
    interface at the working gas setup step is shown.}
	\label{fig:live}
\end{figure}


The queue of discharge requests is also displayed and periodically updated. This
enables remote participants to have an idea of when heir requests will be
processed.
\par
Both of these components are based on AJAX polling of the controller server.
The on-site-like experience is facilitated by two IP cameras. One camera
provides a wide-angle view of the tokamak room and offers an overview of
activities and commotion around the machine. The other camera look directly into
the tokamak chamber through a glass port. During the discharge preparation the
remote team can see the activation of the pre-ionization electrode which also
emits light since it partially functions as a light bulb.
\par
Because the IP camera
has a sampling rate of 1/30 s, it is usually capable of capturing the flash of
plasma (living only several tens of ms) at least on a portion of a frame. This
moment gives the remote team visual confirmation of plasma in real-time and is
particularly popular during initial demonstrations and excursions. Future
upgrades of the IP cameras are envisaged in order to achieve higher resolution
sampling rate and possibly provide authentic sounds from the machine operation.
}