论文信息 - HERA-B data acquisition system

HERA-B data acquisition system

The HERA-B experiment is dedicated to the measurement of CP-violation in decays of neutral B-mesons. The B-mesons are produced in a formidable background of inelastic proton-nucleon interactions. The challenge for the DAQ system is a dead-timeless readout which requires unprecedent speed of storing and processing the data. The data acquisition system has been installed in summer 1999 and it was providing data for detector and trigger commissioning runs in summer 2000.

[1] H. Fleckenstein,et al. The First-Level Trigger of the HERA-B experiment: performance and expectations , 2002 .

[2] J.M.Hernandez. PC Farms for Triggering and Online Reconstruction at HERA—B , 2001 .

[3] U. Schwanke. Trigger and reconstruction farms in the HERA-B experiment and algorithms for a third level trigger , 2000 .

[4] R. Chistov,et al. High-PT trigger for HERA-B experiment , 2000 .

[5] Reinhard Männer,et al. DAQ Online Software and the Run Control System in the HERA-B Experiment , 1999 .

[6] Reinhard Männer,et al. Concept of the first level trigger for HERA-B , 1998 .

[7] P. Kreuzer,et al. Higher level trigger systems for the HERA-B experiment , 1998 .

[8] A. Ferretti,et al. The HERA-B electron pretrigger system , 1998 .

[9] M. Medinnis,et al. HERA-B higher-level triggers: architecture and software , 1998 .

[10] Reinhard Männer,et al. Digital Signal Processor software for the Hera-B Second Level Trigger , 1998 .

[11] D. Ressing. FIRST LEVEL TRIGGER FOR HERA-B , 1996 .

[12] M. Medinnis. HERA-B triggering , 1995 .

[13] W. Hofmann. An experiment to study CP violation in the B system using an internal target at the HERA proton ring , 1993 .

[14] David R. Butenhof. Programming with POSIX threads , 1993 .