Experience with the first level trigger of H1

Author

Sefkow, F. ; Elsen, E. ; Krehbiel, H. ; Straumann, U. ; Coughlan, J.

Author_Institution

DESY, Hamburg, Germany

Volume

42

Issue

4

fYear

1995

fDate

8/1/1995 12:00:00 AM

Firstpage

900

Lastpage

904

Abstract

H1 is a high energy physics experiment at the electron proton collider HERA at DESY, routinely taking data since 1992. Calorimetric and tracking systems record the properties of the particles produced in the collisions in a total of 270000 electronic channels. The collision frequency of 10.4 MHz necessitates pipelining of all data in the centrally clocked trigger and front end readout systems. This report outlines the architecture of the trigger and data acquisition system and describes the experience gained in the first years of running the experiment. A crucial aspect is the clock phase adjustment and stability of all trigger signals

Keywords

clocks; data acquisition; high energy physics instrumentation computing; pipeline processing; synchronisation; trigger circuits; H1 detector; H1 experiment; architecture; clock phase adjustment; data acquisition; first level trigger; front end readout; trigger signal stability; trigger signal synchronization; Clocks; Detectors; Electrons; Event detection; Laboratories; Mesons; Particle beams; Particle tracking; Protons; Stability;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.467771

Filename

467771