21-25 May 2012
New York City, NY, USA
US/Eastern timezone

Implementation and use of BaBar Long Term Data Access.

24 May 2012, 13:30
4h 45m
Rosenthal Pavilion (10th floor) (Kimmel Center)

Rosenthal Pavilion (10th floor)

Kimmel Center

Poster Software Engineering, Data Stores and Databases (track 5) Poster Session


Dr Douglas Smith (SLAC National Accelerator Lab.)


The BaBar high energy physics experiment acquired data from 1999 until 2008. Soon after the end of data taking, the effort to produce the final dataset started. This final dataset contains over 11x10^9 events, in 1.6x10^6 files, over a petabyte of storage. The Long Term Data Access (LTDA) project aims at the preservation of the BaBar data, analysis tools and documentation to ensure the capability to perform physics analyses and publish new physics results. It also foresees to use the data for education and outreach, and for the combination of BaBar results with other experiments. The central element of the BaBar LTDA is an integrated cluster of computation and storage resources which will become the primary facility for the analysis of BaBar data in the coming years. The cluster uses virtualization technologies to ensure continued operation with future hardware and software platforms, and utilizes distributed computation and storage methods for scalability. The design has been developed with particular attention to computer security and portability of the model. This presentation will focus on the details of the implementation and use of the LTDA within the BaBar Collaboration, and the first user experience with BaBar data analyses.

Primary author

Dr Douglas Smith (SLAC National Accelerator Lab.)


Dr Concetta Cartaro (SLAC National Accelerator Lab.) Dr Homer A. Neal (SLAC National Accelerator Lab.) Dr Igor Gaponenko (SLAC National Accelerator Lab.) Dr Kyle Fransham (University of Victoria) Dr Marcus Ebert (SLAC National Accelerator Lab.) Dr Steffen Luitz (SLAC National Accelerator Lab.) Dr Wilko Kroeger (SLAC National Accelerator Lab.)

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