BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Prototyping a Multi‐10‐Gigabit Ethernet Event‐Builder for a Cherenkov Telescope Array DTSTART;VALUE=DATE-TIME:20131014T130000Z DTEND;VALUE=DATE-TIME:20131014T134500Z DTSTAMP;VALUE=DATE-TIME:20200119T124054Z DESCRIPTION:Speakers: Dirk Hoffmann (Centre de Physique des Particules de Marseille\, CNRS/IN2P3)\nWe are developing the prototype of a high speed d ata acquisition (DAQ) system for the Cherenkov Telescope Array. This exper iment will be the next generation ground-based gamma-ray instrument. It wi ll be made up of approximately 100 telescopes of at least three different sizes\, from 6 to 24 meters in diameter.\n\nEach camera equipping the tele scopes is composed of hundreds of light detecting modules pushing out data through gigabit Ethernet links. They will generate a total data flow of u p to 24 Gb/s. Merging and handling such data rates with a single off the s helf computer and switches without any data loss require well designed and tested software and hardware. In a first stage\, the software receives an d reconstructs the incoming partial events. In a second stage\, it perform s on-line calculations with the data in order to improve event selection a nd sends the remaining data to the central DAQ. For the purpose of testing and stimulating our DAQ system\, we designed and started to build a full scale dummy camera cluster with single board computers. This cluster provi des 300 physical gigabit Ethernet ports which will send pre-calculated sim ulation data to the DAQ system\, reproducing the timing and the instantane ous flow of a real camera. With this equipment\, we are able to validate o ur hardware and software architectures. We will present our approach for t he development of such a high data rate system\, first measurements and so lutions that we have applied to solve the problems we encountered to susta in the maximum dataflow reliably.\n\n ontributions/1512849/ LOCATION:Amsterdam\, Beurs van Berlage Grote zaal URL: END:VEVENT END:VCALENDAR