Commissioning of a very fast track finder: the Hera-B first level trigger

Author

Fleckenstein, H. ; Gla, J. ; Michetti, A. ; Norenberg, M. ; Ressing, D. ; Riu, I. ; Wurz, A.

Author_Institution

DESY, Hamburg, Germany

Volume

1

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

94

Lastpage

97

Abstract

In order to filter rare B decays out of the large data stream produced in the 920 GeV proton-nucleon interactions at 10 MHz in Hera-B, a very fast Track Finder has been developed, the First Level Trigger. Being Kalman filter inspired, it searches for possible particle tracks through up to seven layers of tracking chambers with a maximum latency of 10 ps. The Hera-B First Level Trigger together with the Hera-B detector was operated and commissioned during 2000. This paper describes its algorithm, implementation and the commissioning results obtained from the analysis of the collected data

Keywords

Kalman filters; nuclear electronics; position sensitive particle detectors; radiation monitoring; readout electronics; silicon radiation detectors; trigger circuits; 10 MHz; 10 ps; Hera-B First Level Trigger; Kalman filter; Si; large data stream; maximum latency; silicon vertex detector; tracking chambers; trigger decision; very fast track finder; Delay; Detectors; Electron beams; Energy measurement; Kalman filters; Mesons; Mirrors; Particle beams; Particle tracking; Target tracking;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2001 IEEE

Conference_Location

San Diego, CA

ISSN

1082-3654

Print_ISBN

0-7803-7324-3

Type

conf

DOI

10.1109/NSSMIC.2001.1008417

Filename

1008417