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The dirc front-end electronics chain for babar.

By P. Bailly, J. Chauveau, L. Del Buono, J.F. Genat, H. Lebbolo, L. Roos, B Zhang, C. Beigbeder, R. Bernier, D. Breton, T. Caceres, R. Chase, A. Ducorps, A. Hrisoho, P. Imbert, S. Sen, V. Tocut, K. Truong, G. Wormser, F. Zomer, G. Bonneaud, F. Dohou, F. Gastaldi, P. Matricon, C. Renard, C. Thiebaux, G. Vasileiadis, M. Verderi, G. Oxoby, J. Vavra, D. Warner and R.J. Wilson

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

Topics: [PHYS.PHYS.PHYS-INS-DET] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
Publisher: Elsevier
Year: 1999
OAI identifier: oai:HAL:in2p3-00006543v1
Provided by: Hal-Diderot
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