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

1

fYear

1996

fDate

2-9 Nov 1996

Firstpage

162

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

asynchronous transfer mode; detector circuits; nuclear electronics; trigger circuits; ATLAS event selection; ATM networking technology; Trigger/DAQ architecture; architecture; data traffic; event rate reduction; first level trigger; level 1 trigger; 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

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1996. Conference Record., 1996 IEEE

Conference_Location

Anaheim, CA

ISSN

1082-3654

Print_ISBN

0-7803-3534-1

Type

conf

DOI

10.1109/NSSMIC.1996.590930

Filename

590930