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Titolo:
THE PAD READOUT OF THE CERES RICH DETECTORS
Autore:
BAUR R; DREES A; FISCHER P; GLASSEL P; IRMSCHER D; PFEIFFER A; SCHON A; SCHWICK C; SPECHT HJ; TAPPROGGE S;
Indirizzi:
UNIV HEIDELBERG,INST PHYS,PHILOSOPHENWEG 12 W-6900 HEIDELBERG GERMANY UNIV HEIDELBERG,INST PHYS W-6900 HEIDELBERG GERMANY
Titolo Testata:
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment
fascicolo: 2-3, volume: 355, anno: 1995,
pagine: 329 - 341
SICI:
0168-9002(1995)355:2-3<329:TPROTC>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
SILICON DRIFT DETECTOR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
R. Baur et al., "THE PAD READOUT OF THE CERES RICH DETECTORS", Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 355(2-3), 1995, pp. 329-341

Abstract

The CERES/NA45 electron spectrometer uses two Ring Imaging CHerenkov detectors with UV-sensitive gas counters of 2.84 m(2) and 0.42 m(2) size. The backplanes of these gas detectors consist of 53 800 (48 400) square pads in a 2.74 mm (7.62 mm) grid which pick up induced signals of similar to 2 x 10(5) electrons from single-electron avalanches. Compact multi-channel preamplifier modules with low-noise VLSI chips are directly plugged onto the gas detector backplanes. The pad amplitudes are corrected for pedestal variations, digitized and transferred sequentially at 14 MHz in chains of up to 4096 pads to the control room, After zero suppression, the pad information is processed in a chain with pipeline organization, performing a transformation to xy-coordinates and branching part of the data to a trigger processor for fast ring finding. With a simple mechanical concept and a multiplexed data transfer, this readout method offers a good signal-to-noise ratio at gas gainsof a few 10(5), high spatial resolution on large areas and unambiguous reconstruction of multiple hits at a cost of less than or similar to6 DM/channel.

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Documento generato il 09/07/20 alle ore 14:19:07