Recent results and running experience of the new ALEPH Vertex Detector

Author

Batignani, G. ; Bauer, C. ; Becker, H. ; Bloch, B. ; Boudreau, J. ; Brown, D. ; Bosi, F. ; Bosisio, L. ; Carpinelli, M. ; Carr, J. ; Ciocci, A. ; Coyle, P. ; Dell´Orso, R. ; Dietl, H. ; Drinkard, J. ; Focardi, E. ; Forti, F. ; Giorgi, M. ; Hansl-Kozanecka

Author_Institution

Pisa Univ., Italy

Volume

39

Issue

4

fYear

1992

fDate

8/1/1992 12:00:00 AM

Firstpage

701

Lastpage

706

Abstract

A description of the ALEPH Vertex Detector (VDET 91), including the 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 a full x, y, z information of the impact points of charged particles. The authors show 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. The first preliminary study on vertexing techniques and their impact on physics analysis is discussed

Keywords

data acquisition; nuclear electronics; physics computing; position sensitive particle detectors; semiconductor counters; ALEPH Vertex Detector; Si detector; data acquisition system; double-sided readout; mechanical structure; minimum ionizing particles; signal-to-noise ratio; vertexing techniques; Data acquisition; Detectors; Energy resolution; Face detection; Jacobian matrices; Position measurement; Signal resolution; Signal to noise ratio; Silicon; Springs;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.159691

Filename

159691