SFE16, a low noise front-end integrated circuit dedicated to the read-out of large micromegas detectors.

Citation
E. Delagnes et al., SFE16, a low noise front-end integrated circuit dedicated to the read-out of large micromegas detectors., IEEE NUCL S, 47(4), 2000, pp. 1447-1453
Citations number
7
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Nuclear Emgineering
Journal title
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
ISSN journal
0018-9499 → ACNP
Volume
47
Issue
4
Year of publication
2000
Part
1
Pages
1447 - 1453
Database
ISI
SICI code
0018-9499(200008)47:4<1447:SALNFI>2.0.ZU;2-Y
Abstract
A front-end BiCMOS ASIC was specially developed for the Micromegas detector s to be used in the Small Angle Tracker of the COMPASS experiment at CERN. Each of the 16 channels of this integrated circuit contains a low noise pre amplifier with a 100 ns peaking time filter and a discriminator driving a l ow-level differential digital buffer. The design of the preamplifier and th e choice of the shaping have been tuned to the detector signal shape in ord er to allow the operation of Micromegas even for very low multiplication ga in values. Noise measurements show an equivalent noise charge of less than 1500 e- rms for a detector capacitance of 40pF. The measured performances o f this ASIC associated or not with the detector are fully described in this paper.