METALJET D2+ OPERATION
Revision 19, November 2016 Page 5-6
5.4.1 GUI layout
The GUI has eleven tabs, each controlling specific parts of the MetalJet D2+ source. In each tab certain
functions of the source may be controlled.
There are also a few static regions, to the right and at the bottom, which are always visible independently of
which tab is currently shown, see Figure 5-3 above. These are:
Login. Indicates current user level
Status. Gives a system status overview. Exclamation marks indicate problems. Detailed information is
displayed when hovering over the exclamation mark.
Readback values. Shows current readings from electron gun power, vacuum levels and jet pump
pressure.
Spot info. Displays spot size calibration information from last calibration.
Important messages. Shows a subset of important messages from XCS, also shown in the “Log” tab.
5.5 The states of the software
The software essentially works as a state machine. All normal operation of the system is carried out by
requesting a state change. This is done from the “States” tab (see Figure 5-4 below).
5.5.1 Standard states
The following standard states exist:
Initial. This is an undefined state that the machine starts in when the XCS control software is started.
There are no rules regarding what hardware is on or off in this state, as it depends on the manner in
which the system was shut down last time.
High vacuum. This is usually an intermediate state when going to the “Ready” state. It means the
vacuum pumps are operating and that the system has reached a good enough vacuum to turn on the
liquid-metal jet system.
Ready. This is the standby state of the machine. It means that the exit window is on, the liquid-metal
jet is operating at the correct pressure, and that the vacuum is good enough to turn on x-ray
generation.
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