BaBar DIRC electronic front-end chain

Journal Article · Sat Aug 01 04:00:00 EDT 1998 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.710959· OSTI ID:665254

Bailly, P ^[1]; Beigbeder, C; Bernier, R ^[2]

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1. Univ. Paris (France). Lab. de Physique Nucleaire et de Hautes Energies
2. Univ. Paris-Sud, Orsay (France). Lab. de l`Accelerateur Lineaire; and others

The Front-End electronics of the Detector of Internally Reflected Cerenkov light (DIRC) for the BaBar experiment is presented. Its aim is to measure to better than 1ns the arrival time of Cerenkov photoelectrons, detected in a 11,000 phototubes array and their amplitude spectra. It mainly comprises 64-channel DIRC Front-End Boards (DFB) equipped with eight full-custom Analog Chips performing zero-cross discrimination with 2 mV threshold and pulse shaping, four full-custom Digital TDC chips for timing measurements with 500 ps binning and a readout logic selecting hits in the trigger window, and DIRC Crate Controller cards (DCC) serializing the data collected from up to 16 DFBs onto a 1.2 Gb/s optical link. Extensive test results of the pre-production chips will be presented, as well as system tests.

• OSTI ID: 665254
• Report Number(s): CONF-9709140--
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 4Pt1 Vol. 45; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
ANALOG SYSTEMS
CHERENKOV COUNTERS
DATA ACQUISITION SYSTEMS
PARTICLE IDENTIFICATION
PEP STORAGE RINGS
READOUT SYSTEMS
TIMING CIRCUITS
TRIGGER CIRCUITS