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 14: Online tab without data acquisition.
incoming UDP datagrams. Figure 15 shows the connection parameters. Next to them,
another small but important group of settings is located. It is the acquisition group of set-
tings and consists of two text fields. The first one is the acquisition time to be requested
from the BLEDP server. The input value must be in seconds. The application transforms
the value from seconds into the amount of data bundles which are equal to the requested
time and sets the appropriate bits of the acquisition command to be sent to the server (see
chapter 4.3.1). The second text field represents the desired measurement period in the
online graph. The value should be put in μs. The measurement period refers to how many
acquisition points will be averaged in the online display. The actual averaging number is
the measurement period divided by 2, because one point is acquired every 2 μs by the
card. For example if 10000 μs is put as measurement period, then one displayed point will
be the average of 5000 acquisition points. Figure 16 shows the acquisition parameters as
they appear in the interface.
Figure 15: Connection settings Figure 16: Acquisition settings
The next 3 groups are the display, scaling and storage settings and parameters. Regard-
ing the display group, there are three components inside. The first one is a text field about
the observation window in points and refers to the amount of points to be displayed in the
online graph. The second one is spinner and refers to the shift window, again in points.
Emmanouil I. Angelogiannopoulos 32