DELPHI-DPHEP DELPHI data preservation activity

Changes since 2002

Many years after the end of the experiment IT services are changing, and the software stack has to adapt to that to ensure the continued accessibility of the DELPHI data. Changes in services include: At the same time new services have arrived which replace the functionality of these disappearing services.

Revised DELPHI software stack

Based on the software CD created in 2002 a new software stack has been created. It is the default since the switch of lxplus to CentOS7. The new software stack has no remaining dependencies on AFS, LSF or CASTOR. It works fine outside CERN as well. Currently, the following operating systems are supported: Setting up the software locally:

Using and testing

On Centos7 (eg the new software stack is the default. On lxplus you can test it by manually sourcing /cvmfs/ or /cvmfs/, depending on your shell.

Caveats and things to be done

Tasks still to be performed are tracked in the DPHEP JIRA task tracker. Input to any of the tickets is very welcome. Some remarks:

Notes on the event display DELGRA

To run DELGRA locally, you must buy a license and the runtime environmnent from FEI. You can run DELGRA at CERN as well, however, there are some restrictions.


At this point in time it is very difficult to do meaningful in depth tests of the stack. If you use it please do cross checks with old archived data, and report any problems to

Links and references

Last modified: Tue Dec 4 11:36:37 CET 2018