New GSI Analysis System GO4  

Participants:    R. Barth, H. Essel, R. Holzmann, M. Kaspar, C. Kozhuharov, W.F.J. Müller, M. Richter, C. Scheidenberger, K. Schmidt, K. Sümmerer, H. Winter

Distribution: P. Braun-Munzinger, S. Glückert, H. Göringer, N. Herrmann, S. Hofmann, H. J. Kluge, P. Koczon, W. Koenig, U. Krause, U. Lynen, V. Metag, G. Münzenberg, V. Schaa, C. Schlegel, K.H. Schmidt, H. J. Specht, R. Steiner, E. Stiel

Proposals for a name of the future system are welcome (e.g. GO4 - pronounced "Go for" - GSI Object Oriented On-line and Off-line system). This is necessary to create documents, directories, web sides etc. properly.

A temporary project web page can be found under http://depc35/o4. All project papers, documents, and minutes will be done in English.

To analyze beam parameters during the therapy project a Lean Analysis system LEA (http://www-gsi-vms.gsi.de/anal/lea.html) has been developed. It is built from the MBS user interface, MBS histogram manager and the commercial software package Interactive Data Language IDL of Research Systems, Inc.. IDL is used for visualization and for building a GUI. Some of IDL’s benefits are:

• Powerful graphics and array handling tools,
• Easy implementation of graphical user interfaces (GUI),
• Callable from programs (e.g. histograms and scatter plots),
• Tools for mathematical data analysis (e.g. fit, FFT),
• It is available on most platforms.

Unfortunately, it has some disadvantages:

• IDL is an expensive tool (about DM 15,000 for a floating developer license),
• Multi thread GUI applications are not easy to implement.

LEA runs online connected to MBS systems, or offline. Data is analyzed event by event in a user analysis routine. New events can be written to standard data files. User commands can easily be implemented.

The functionality of LEA includes among other features most histogram manipulations, fitting procedures, scatter plots with conditions, correlation scatters between parameters.

H. Essel will prepare a paper about the status of LEA and a proposal to finish the project.

In the meantime a new graphical user interface for the MBS system is under development written in Java. Java is well suited to write GUIs, but currently no replacement for the IDL graphics presentation and mathematical functionality.

The project members agreed in first regular meetings twice a week on

The next meetings and their agenda:

M. Richter, August 3, 1998

Downloads-Manuals-References

GSI Helmholtzzentrum für Schwerionenforschung, GSI
Planckstr. 1, 64291 Darmstadt, Germany 
For all questions and ideas contact: J.Adamczewski@gsi.de or S.Linev@gsi.de
Last update: 27-11-13.