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A UNIX SVR4-OS 9 distributed data acquisition for high energy physics

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6 Author(s)
Drouhin, F. ; Univ. de Haute Alsace, Mulhouse, France ; Schwaller, B. ; Fontaine, J.C. ; Charles, F.
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The distributed data acquisition (DAQ) system developed by the GRPHE (Groupe de Recherche en Physique des Hautes Energies) group is a combination of hardware and software dedicated to high energy physics. The system described here is used in the beam tests of the CMS tracker. The central processor of the system is a RISC CPU hosted in a VME card, running a POSIX compliant UNIX system. Specialized real-time OS9 VME cards perform the instrumentation control. The main data flow goes over a deterministic high speed network. The UNIX system manages a list of OS9 front-end systems with a synchronisation protocol running over a TCP/IP layer

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Nuclear Science, IEEE Transactions on  (Volume:45 ,  Issue: 4 )