Design and Development of a Diagnostics Client for a Beam Loss ...

Design and Development of a Diagnostics Client for a Beam Loss Measurement System at CERN
Figure 28: Offline pick of a multi-channel acquisition.
online sessions. Lastly, everything regarding the offline logic runs on the Event Dispatch
Thread (EDT), as most of the offline implementation is regarded as Swing event handling
code. Due to the fact that all of the tasks executed in the offline panel take a rather small
amount of time to execute, the user interface does not become unresponsive and thus
there is no need to spawn a Swingworker thread to execute the offline code.
4.4.5 Status Data Displays
The two status tabs of the user interface are in charge of displaying in real-time, the status
data which are transmitted in parallel with the acquisition data as already discussed in
chapter 4.3.3.2. The two tabs are activated only when an online session with the server
is in progress. The concept of displaying in real time the status data, is split into two tabs,
because of the big amount of the necessary components and the limited amount of space.
The first tab was agreed to be called “Status” and the second tab “Hardware Info”, because
most of the status elements of this tab provide information about the BLEDP hardware.
The update rate of these tabs is 1 Hz, so the elements are updated every one second.
We can proceed with explaining the user interfaces. In Figure 29 the default outlook of
the Status tab is shown.
This tab contains several components, such as textboxes, LEDs, labels and graphs, used
for the monitoring of the status elements. The lower three graphs contain information
about the current consumption, the high voltage monitoring, the temperature and humidity
of the connected card. The upper graph is a micrography of the graph in the online tab,
Emmanouil I. Angelogiannopoulos 43