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 24: Different Mac Addresses (BLEDP
Cards)
Figure 23: Offline tab without data.
Figure 25: Different Acquisition sessions to pick
for analysis
equipped with two mouse and one keyboard interactors. The first mouse interactor is the
zoom interactor, provided by the JDataViewer API, and the second is a custom-made data-
pick interactor, which we will discuss about in the next few lines. The keyboard interactor is
about moving around the data using the arrow keys, if a zoom interaction was performed.
The most important custom-made data-pick interactor gives the possibility to pick a point
using the left mouse button. After this action, the data of the picked point, which represents
a second, are read from the corresponding data file and plotted in the lower graph using the
average value from the measurement period as reference. Furthermore, all the settings in
the lower part of the interface get enabled. The measurement period and the combo-box
have the same meaning as in the online interface. There is also a label informing the user
about the current second picked. Additionally, a set of black markers appear in the upper
graph, one on every point of every plot visible, indicating which second was last picked.
Emmanouil I. Angelogiannopoulos 40