BaBar Level 1 Drift Chamber Trigger Upgrade

Technical Report · Wed Nov 20 00:00:00 EST 2002

DOI:https://doi.org/10.2172/808661· OSTI ID:808661

Halyo, Valerie

As PEP-II is exceeding the original design luminosity, BaBar is currently upgrading its Level 1 Drift Chamber Trigger (DCT) to reduce the rate of background Level 1 triggers by more than 50% while preserving the high Level 1 trigger physics efficiency. New Z-Pt-Discriminator VME boards (ZPD) utilizing the stereo hit information from the drift chamber are being built to extract the track z coordinate at the beam line with a resolution of a few centimeters.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 808661
• Report Number(s): SLAC-PUB-9546; TRN: US0302513
• Resource Relation: Other Information: PBD: 20 Nov 2002
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DESIGN
DRIFT CHAMBERS
EFFICIENCY
BEAM LUMINOSITY
RESOLUTION
PEP STORAGE RINGS
MODIFICATIONS