Speaker
G. Asova
(DESY ZEUTHEN)
Description
The photo injector test facility at DESY Zeuthen (PITZ) was built to
develop, operate and optimize photo injectors for future free
electron lasers and linear colliders. In PITZ we use a DAQ system
that stores data as a collection of ROOT files, forming our database
for offline analysis. Consequently, the offline analysis will be
performed by a ROOT application, written at least partly by the user
(a physicist). To help the user to develop safe filters and data
visualisation (graphs, histograms) with minimal effort in an
existing ROOT framework application, we provide a GUI that generates
C++ source files, compiles and links them to the rest of the
application. We call these C++ routines "Automatic Procedures" (AP).
Standard filter conditions and data visualisation can be generated
by click or drag- and-drop, while more complex tasks may be
expressed as small pieces of C++ code. Once compiled by ACLiC
(ROOTs Automatic Compiler Linker), an Automatic Procedure may be
reused without repeated compilation. E. g. the injector shift
crew will run a number of ROOT applications, controlled by APs in
regular intervals. Alternatively every AP can be read in and loaded
to the GUI for further improvement. A number of APs can run in a
logical sequence, parameters can be transferred from one AP to an
other. They can be selected by picking a point from a graph.
The GUI was constructed with Qt, because that offers a comprehensive
GUI programming toolkit.
The photo injector test facility at DESY Zeuthen (PITZ) was built to
develop, operate and optimize photo injectors for future free
electron lasers and linear colliders. In PITZ we use a DAQ
system that stores data as a collection of ROOT files, forming our
database for offline analysis. Consequently, the offline analysis
will be performed by a ROOT application, written at least partly by
the user (a physicist). To help the user to develop safe filters and
data visualisation (graphs, histograms) with minimal effort in an
existing ROOT framework application, we provide a GUI that generates
C++ source files, compiles and links them to the rest of the
application. We call these C++ routines "Automatic Procedures" (AP).
Standard filter conditions and data visualisation can be generated
by click or drag- and-drop, while more complex tasks may be
expressed as small pieces of C++ code. Once compiled by ACLiC
(ROOTs Automatic Compiler Linker), an Automatic Procedure may be
reused without repeated compilation. E. g. the injector shift
crew will run a number of ROOT applications, controlled by APs in
regular intervals. Alternatively every AP can be read in and loaded
to the GUI for further improvement. A number of APs can run in a
logical sequence, parameters can be transferred from one AP to an
other. They can be selected by picking a point from a graph.
The GUI was constructed with Qt, because that offers a comprehensive
GUI programming toolkit.
Keywords: Automatic Procedure, ROOT, ACLiC, Data Analysis, Data
Visualisation, GUI, Qt
Primary authors
G. Asova
(DESY ZEUTHEN)
K. Abrahamyan
(DESY ZEUTHEN)
M. Winde
(DESY ZEUTHEN)
P. Castro-Garcia
(DESY)
S. Weisse
(DESY ZEUTHEN)
