BaBar DIRC electronics Front-End chain

被引:0
|
作者
Bailly, P. [1 ]
Beigbeder, C. [1 ]
Bernier, R. [1 ]
Breton, D. [1 ]
Bonneaud, G. [1 ]
Caceres, T. [1 ]
Chase, R. [1 ]
Chauveau, J. [1 ]
Del Buono, L. [1 ]
Dohou, F. [1 ]
Ducorps, A. [1 ]
Gastaldi, F. [1 ]
Genat, J.F. [1 ]
Hrisoho, A. [1 ]
Imbert, P. [1 ]
机构
[1] Universites Paris 6 et 7, Paris, France
来源
IEEE Transactions on Nuclear Science | 1998年 / 45卷 / 4 pt 1期
关键词
Data communication systems - Digital signal processing - Microprocessor chips - Optical links - Particle detectors;
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摘要
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 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.
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页码:1898 / 1906
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