XMM Users' Handbook

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The GSim GUI

The CSim GUI is displayed in Fig. 86. It allows users to specify the details of the simulation as listed above, by opening the different folders that are visible in the screen shot.

**Figure 86:** *The GUI of SciSim's Ray Generator.*
$\begin{figure} \begin{center} \leavevmode \epsfig{width=0.7\hsize, file=figs/scisim_raygen_gui.ps} \end{center} \end{figure}$

Observation
Here the integration time in seconds is entered.
Instrument
Here the user can enter the upper and lower boundary for the energy spectrum of the simulated radiation (these are not the energy thresholds for the bandpasses of the instruments!).
Illumination
This is the input field to vary the illumination over the FOV. These input parameters should not be changed for astronomical simulations.

The GUIs for the other components of SciSim are designed very similarly and therefore not shown here.

European Space Agency - XMM Science Operations Centre