Speaker
Description
The migration of LEP data to the common event data model EDM4HEP, developed for future collider physics studies and used for FCC physics potential studies, is crucial for several reasons. First, it helps data preservation by ensuring the data remains accessible for future physics analyses. Additionally, it serves as a critical test of EDM4HEP, as this will be the first time the format is applied to real data. This data will also be invaluable to the FCC-ee community, enabling the training of new software on actual e+e- physics events.
A project to convert as much LEP data as possible into EDM4HEP has been initiated at CERN, starting with the ALEPH data. Considerable effort has been dedicated to recovering the documentation and software used during ALEPH's operation. A series of programs have been developed to extract data from the original computing environments (Linux SLC4 and SLC6) and convert it into EDM4HEP structures, using an intermediate text file as an exchange format during the process.
This contribution will present the current status of this ongoing effort, along with the lessons learned so far and the future outlook for the project.
