New results on silicon microstrip detectors of CMS tracker

Citation
N. Demaria et al., New results on silicon microstrip detectors of CMS tracker, NUCL INST A, 447(1-2), 2000, pp. 142-150
Citations number
7
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
0168-9002 → ACNP
Volume
447
Issue
1-2
Year of publication
2000
Pages
142 - 150
Database
ISI
SICI code
0168-9002(20000601)447:1-2<142:NROSMD>2.0.ZU;2-Y
Abstract
Interstrip and backplane capacitances on silicon microstrip detectors with p(+) strip on n substrate of 320 mu m thickness were measured for pitches b etween 60 and 240 mu m and width over pitch ratios between 0.13 and 0.5. Pa rametrisations of capacitance w.r.t. pitch and width were compared with dat a. The detectors were measured before and after being irradiated to a fluen ce of 4 x 10(14) protons/cm(2) of 24 GeV/e momentum. The effect of the crys tal orientation of the silicon has been found to have a relevant influence on the surface radiation damage, favouring the choice of a [1 0 0] substrat e. Working at high bias (up to 500 V in CMS) might be critical for the stab ility of detector, for a small width over pitch ratio. The influence of hav ing a metal strip larger than the p(+) implant has been studied and found t o enhance the stability. (C) 2000 Elsevier Science B.V. All rights reserved .