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 36: PS Multi Channel Acquisition. Online Tab.
engaged. Moreover, data reduction in the online view will be necessary.
The high data rate in both modes from the server’s side was known from the begin-
ning and considered as a very important fact during the development phases. A sim-
ple multi-threading process, described in Chapter 4.4.3, was employed to achieve
parallel data socket acquisition, online plotting and storing. This parallel manipula-
tion of incoming data streams is expected to boost the performance of the client,
especially in multi-core systems. Furthermore, the data reduction in the online view
is necessary and vital for the performance. The measurement period field should
be set with a proper value for averaging, that won’t cause any stability issues. Prior
to any online session, a recommended minimum value of 400μs, ascertained after
many tests, for measurement period should be used for stable performance.
5.1.1 Reliability Analysis
The reliability of the client application can be assessed by several methods. First of all,
the main factor that impacts the system reliability is how well the end product meets the
predefined requirements. This factor is indicated by the quality of the design and final
implementation of the system discussed in Chapter 4. The final characteristics of the
BLEDP client are compared against the list of the predefined requirements in the previous
section. Summarizing the points presented there, the general conclusion that can be
drawn is that the final system successfully fulfills the list of specifications at the required
level. During the BLEDP cards development, the client application proved to be stable
Emmanouil I. Angelogiannopoulos 53