Rapid 3D Track Reconstruction with the BaBar Trigger Upgrade

Technical Report · Mon May 24 04:00:00 EDT 2004

DOI:https://doi.org/10.2172/826940· OSTI ID:826940

Bailey, S ^[1]

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1. SLAC

As the PEP-II luminosity increases the BaBar trigger and dataflow systems must accommodate the increasing data rate. A significant source of background events at the first trigger level comes from beam particle interactions with the beampipe and synchrotron masks, which are separated from the interaction region by more than 20 cm. The BaBar trigger upgrade will provide 3D tracking capabilities at the first trigger level in order to remove background events by distinguishing the origin of particle tracks. Each new z{sub 0} p{sub T} Discriminator (ZPD) board processes over 1 gigabyte of data per second in order to reconstruct the tracks and make trigger decisions based upon the 3D track parameters.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (US)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 826940
• Report Number(s): SLAC-PUB-10460
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
DISCRIMINATORS
LUMINOSITY
ORIGIN
PARTICLE INTERACTIONS
PARTICLE TRACKS
SYNCHROTRONS