Studies of dynamics of electron clouds in STAR silicon drift detectors

Citation
R. Bellwied et al., Studies of dynamics of electron clouds in STAR silicon drift detectors, NUCL INST A, 439(2-3), 2000, pp. 507-512
Citations number
9
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
439
Issue
2-3
Year of publication
2000
Pages
507 - 512
Database
ISI
SICI code
0168-9002(20000111)439:2-3<507:SODOEC>2.0.ZU;2-2
Abstract
The dynamics of electrons generated in silicon drift detectors was studied using an IR LED. Electrons were generated at different drift distances. In this way, the evolution of the cloud as a function of drift time was measur ed. Two methods were used to measure the cloud size. The method of cumulati ve functions was used to extract the electron cloud profiles. Another metho d obtains the cloud width from measurements of the charge collected on a si ngle anode as a function of coordinate of the light spot. The evolution of the electron cloud width with drift time is compared with theoretical calcu lations. Experimental results agreed with theoretical expectations. (C) 200 0 Elsevier Science B.V. All rights reserved.