E.B. Mannelli
Scuola Normale Superiore di Pisa
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Featured researches published by E.B. Mannelli.
nuclear science symposium and medical imaging conference | 1991
G. Batignani; C. Bauer; H. Becker; B. Bloch; J. Boudreau; D. N. Brown; F. Bosi; L. Bosisio; M. Carpinelli; J. Carr; A. Ciocci; P. Coyle; R. Dell'Orso; H. Dietl; J. Drinkard; E. Focardi; F. Forti; M. A. Giorgi; T. Hansl-Kozanecka; D. Hauff; Peter Holl; R. G. Jacobsen; E. Lançon; J. Lauber; A. M. Litke; G. Lutz; G. Lütjens; E.B. Mannelli; W. Männer; T. S. Mattison
A description of the new ALEPH Vertex Detectors (VEDET 91), including the new mechanical structure and the improved data acquisition system, is given. The apparatus consists of two complete layers of silicon detectors with double-sided readout which provide full x,y,z information on the impact points of charge particles. The authors present results on signal-to-noise ratio for minimum ionizing particles and efficiency in hit/track matching. Results on position, impact parameter, and momentum resolution are also shown as measured using high-momentum muons. Preliminary results on single hit and impact parameter resolution show that the detectors and VLSI read-out electronics work as expected, and the performance compares well with previous test beam results and Monte Carlo simulations. Preliminary results on precision vertex reconstruction show a significant improvement in the data analysis which will be fully exploited in studying tau , b and c physics when all statistics are available.<<ETX>>
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1993
G. Batignani; C. Bauer; H. Becker; B. Bloch-Devaux; J. Boudreau; D. N. Brown; F. Bosi; L. Bosisio; M. Carpinelli; J. Carr; P. Cattaneo; A. Ciocci; P. Coyle; R. Dell'Orso; H. Dietl; J. Drinkard; E. Focardi; F. Forti; M. A. Giorgi; T. Hansl-Kozanecka; D. Hauff; Peter Holl; R. G. Jacobsen; E. Lancon; J. Lauber; A. M. Litke; G. Lutz; G. Lütjens; E.B. Mannelli; W. Männer
Abstract A large system of silicon strip detectors with double sided readout has been successfully commissioned over the course of the last year at the e + e − collider LEP. The readout of this 73 728 channel system is performed with custom designed VLSI charge sensitive amplifier chips (CAMEX64A). An overall point resolution of 12 μm on both sides has been acheived for the complete system. The most important difficulties during the run were beam losses into the detector, and a chemical agent deposited onto the electronics; however, the damage from these sources was understood and brought under control. This and other results of the 1991 data-taking run are described with special emphasis on the operational experience.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1992
A. Messineo; G. Raso; A. Antonelli; C. Avanzini; G. Bagliesi; G. Bencivenni; F. Bossi; U. Bottigli; C. Bradaschia; P. Campana; G. Capon; F. Cerutti; V. Chiarella; D. Creanza; M. De Palma; B. D'Ettorre-Piazzoli; A. Farilla; G. Felici; L. Foà; A. Giassi; G. Iaselli; P. Laurelli; F. Ligabue; G. Maggi; M. Maggi; E.B. Mannelli; G. Mannocchi; G.P. Murtas; S. Natali; S. Nuzzo
Abstract The gas gain monitoring system of the Aleph hadron calorimeter is described. The dependence of the charge response to a) the ratio between the pressure to temperature and b) the gas mixture parameters (Ar/CO2 ratio and isobutane percentage) have been determined. The total gain variation is measured with a precision of about 0.4%.
