Event reconstruction performance of the ALICE High Level Trigger for p+p collisions

Author

Richter, M. ; Aamodt, K. ; Alt, T. ; Appelshäuser, H. ; Arend, A. ; Becker, B. ; Böttger, S. ; Breitner, T. ; Büsching, H. ; Cicalo, C. ; Chattopadhyay, S. ; Cleymans, J. ; Das, I. ; Djuvsland, ø ; Erdal, H. ; Fearick, R. ; Gorbunov, S. ; Haaland, ø S. ;

Author_Institution

CERN, Geneva, Switzerland

fYear

2010

fDate

24-28 May 2010

Firstpage

1

Lastpage

6

Abstract

The ALICE High Level Trigger comprises a large computing cluster, dedicated interfaces and software applications. It allows on-line event reconstruction of the full data stream of the ALICE experiment at up to 25 GByte/s. The commissioning campaign has passed an important phase since the startup of the Large Hadron Collider in Nov 2009. The system has been transferred into continuous operation with focus on the event reconstruction and first simple trigger applications. The paper reports for the first time on the achieved event reconstruction performance in the ALICE central barrel region.

Keywords

data acquisition; heavy ion-nucleus reactions; position sensitive particle detectors; proton-proton inclusive interactions; ALICE central barrel region; ALICE experiment; ALICE high level trigger; Large Hadron Collider; data acquisition; on-line event reconstruction; proton+proton collisions; software applications; Algorithm design and analysis; Clustering algorithms; Detectors; Electrostatic discharge; Large Hadron Collider; Physics; Software;

fLanguage

English

Publisher

ieee

Conference_Titel

Real Time Conference (RT), 2010 17th IEEE-NPSS

Conference_Location

Lisbon

Print_ISBN

978-1-4244-7108-9

Type

conf

DOI

10.1109/RTC.2010.5750346

Filename

5750346