The DAQ of the COMPASS experiment

Author

Schmitt, L. ; Angerer, H. ; Franz, N. ; Grube, B. ; Ketzer, B. ; Konorov, I. ; Kuhn, R. ; Liebl, W. ; Paul, S. ; Fischer, H. ; Grunemaier, A. ; Heinsius, F.-H. ; Königsmann, K. ; Schmidt, T. ; Fuchs, U. ; Lamanna, M.

Author_Institution

Phys.-Dept., TU Munchen, Garching, Germany

Volume

51

Issue

3

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

439

Lastpage

444

Abstract

COMPASS is a fixed target experiment at CERN´s SPS. In 2002, a first physics run was completed with 260 TB of data recorded, corresponding to 5 billion events. The data acquisition architecture is based on custom frontends, buffers based on PCI cards, and server PCs networked via Gigabit Ethernet. A custom timing and trigger distribution system provides unique event identification and time synchronization. Results on the performance of the system and an outlook to improvements using online filtering will be given.

Keywords

buffer storage; data acquisition; high energy physics instrumentation computing; local area networks; nuclear electronics; optical fibres; particle spectrometers; CERN SPS; COMPASS fixed target experiment; COMPASS spectrometer; DAQ; Gigabit Ethernet; PCI cards; S-Link; buffer memories; custom frontends; data acquisition architecture; event identification; first physics run; online filtering; optical fiber devices; server PC; time synchronization; trigger control system; Data acquisition; Detectors; Electromagnetic scattering; Magnetic separation; Mesons; Nuclear measurements; Optical fiber polarization; Optical scattering; Physics; Spectroscopy; Buffer memories; COMPASS; S-Link; data acquisistion; optical fiber devices; trigger control system;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2004.829386

Filename

1310537