The proposed level-3 trigger system for STAR

Authors
Adler, C Berger, J Demello, M Flierl, D Landgraf, J Lange, JS LeVine, MJ Lindenstruth, V Ljubicic, A Nelson, J Roehrich, D Schafer, E Schambach, JJ Schmischke, D Schulz, MW Stock, R Struck, C Yepes, P
Citation
C. Adler et al., The proposed level-3 trigger system for STAR, IEEE NUCL S, 47(2), 2000, pp. 358-361
Citations number
4
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Nuclear Emgineering
Journal title
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
ISSN journal
00189499 → ACNP
Volume
47
Issue
2
Year of publication
2000
Part
1
Pages
358 - 361
Database
ISI
SICI code
0018-9499(200004)47:2<358:TPLTSF>2.0.ZU;2-Y
Abstract
The level-3 trigger system of the STAR experiment will in the final stage c onsist of a farm of 24 ALPHA/Linux processors, interconnected by SCI (Scala ble Coherent Interface). The system will perform online tracking of N(track )greater than or equal to 8000 tracks per event (N(point)less than or equal to 45 per track). The track data will be transfered to a global level-3 CP U (expected data transfer rate similar or equal to 48 MB/s), performing onl ine event analysis tasks (e.g. invariant mass reconstruction) with a design trigger input rate of R=100 Hz (R=20 Hz for a prototype system).