THE NEW ALEPH SILICON VERTEX DETECTOR

Citation
D. Creanza et al., THE NEW ALEPH SILICON VERTEX DETECTOR, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 409(1-3), 1998, pp. 157-160
Citations number
2
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
ISSN journal
01689002
Volume
409
Issue
1-3
Year of publication
1998
Pages
157 - 160
Database
ISI
SICI code
0168-9002(1998)409:1-3<157:TNASVD>2.0.ZU;2-C
Abstract
The ALEPH collaboration, in view of the importance of effective vertex detection for the Higgs boson search at LEP 2, decided to upgrade the previous vertex detector. Main changes were an increased length (+/- 20 cm), a higher granularity for r phi view (50 mu m), a new preamplif ier (MX7 rad hard chip), a polymide (upilex) fan-out on z side to carr y the signals from the strips to the front-end electronics outside the fiducial region reducing consequently the passive material in the cen tral region by a factor of two. The detector, the running experience a nd its performance will be described. (C) 1998 Elsevier Science B.V. A ll rights reserved.