BaBar DIRC electronics front-end chain

Author

Bailly, P. ; Beigbeder, C. ; Bernier, R. ; Breton, D. ; Bonneaud, G. ; Caceres, T. ; Chase, R. ; Chauveau, J. ; Buono, L. Del ; Dohou, F. ; Ducorps, A. ; Gastaldi, F. ; Genat, J.F. ; Hrisoho, A. ; Imbert, P. ; Lebbolo, H. ; Matricon, P. ; Oxoby, G. ; Rena

Author_Institution

Lab. de Phys. Nucl. et de Hautes Energies, Paris VI Univ., France

Volume

45

Issue

4

fYear

1998

fDate

8/1/1998 12:00:00 AM

Firstpage

1898

Lastpage

1906

Abstract

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 1 ns the arrival time of Cerenkov photoelectrons, detected in a 11000 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 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 are presented, as well as system tests

Keywords

Cherenkov counters; analogue integrated circuits; application specific integrated circuits; discriminators; nuclear electronics; optical links; pulse shaping circuits; BaBar DIRC electronics front-end chain; BaBar experiment; Cerenkov photoelectrons; Detector of Internally Reflected Cerenkov light; crate controller cards; full-custom analog chips; full-custom digital TDC chips; readout logic selecting hits; zero-cross discrimination; Logic; Performance evaluation; Photoelectricity; Pulse measurements; Pulse shaping methods; Semiconductor device measurement; Shape control; System testing; Time measurement; Timing;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.710959

Filename

710959