A sequential processing strategy for the ATLAS event selection

Author

Bystricky, J. ; Calvet, D. ; Ernwein, J. ; Gachelin, O. ; Hansl-Kozanecka, T. ; Hubbard, J.R. ; Huet, M. ; Le Du, P. ; Mandjavidze, I. ; Mur, M. ; Smizanska, M. ; Thooris, B.

Author_Institution

CEA, Centre d´´Etudes Nucleaires de Saclay, Gif-sur-Yvette, France

Volume

44

Issue

3

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

342

Lastpage

347

Abstract

A new processing strategy for the ATLAS event selection system is proposed for use downstream of the first level trigger. It aims to achieve a reduction of the event rate to a level suitable for recording on permanent storage via a sequential treatment of the “regions of interest” selected by the level 1 trigger. A possible Trigger/DAQ architecture which exploits this concept is presented. It is based on a single processing farm and a network which transports data and protocol traffic. The resources necessary for the implementation of this architecture are estimated. A set of performance figures obtained by calculations and computer simulations are given assuming the use of ATM networking technology

Keywords

detector circuits; nuclear electronics; ATLAS event selection; ATM networking technology; Trigger/DAQ architecture; architecture; computer simulations; event rate reduction; first level trigger; level 1 trigger; network data transport; permanent storage; protocol traffic; sequential processing strategy; single processing farm; Asynchronous transfer mode; Bandwidth; Computer architecture; Computer simulation; Data acquisition; Large Hadron Collider; Performance analysis; Telecommunication traffic; Traffic control; Transport protocols;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.603668

Filename

603668