Speaker
Description
The Belle II raw data transfer system is responsible for transferring raw data from the Belle II detector to the local KEK computing centre, and from there to the GRID. The Belle II experiment recently completed its first Long Shutdown period - during this time many upgrades were made to the detector and tools used to handle and analyse the data. The Belle II data acquisition (DAQ) systems received significant improvements, necessitating changes in the processing steps for raw data. Furthermore, experience gained during Run 1 identified areas where the scalability of the system could be improved to better handle the expected increase in data rates in future years.
To address these issues, extensive upgrades were made to the raw data transfer system, including: utilisation of the DIRAC framework for all data transfers; a change in the protocol used to communicate with the DAQ systems; and retirement of the previously used file format conversion component of the system. This talk will describe these changes and improvements in detail, and give an overview of the current state of the Belle II raw data transfer system.
