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The dirc front-end electronics chain for babar.

Abstract : The detector of Internally Reflected Cherenkov light (DIRC) of the BaBar detector (SLAC Stanford, USA) measures better than 1ns the arrival time of Cherenkov photoelectrons, detected in a 11000 phototubes array and their amplitude spectra. It mainly comprises of 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 of the pre-production chips have been performed as well as system tests.
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Contributor : Jean-Michel Levy <>
Submitted on : Thursday, October 12, 2000 - 3:59:12 PM
Last modification on : Saturday, December 19, 2020 - 11:32:02 AM


  • HAL Id : in2p3-00006543, version 1


P. Bailly, J. Chauveau, L. del Buono, J.F. Genat, H. Lebbolo, et al.. The dirc front-end electronics chain for babar.. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 1999, 433, pp.450-455. ⟨in2p3-00006543⟩



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