Article

The DZERO level 3 data acquisition system

Fermi Nat. Accel. Lab., USA
IEEE Transactions on Nuclear Science (Impact Factor: 1.22). 07/2004; DOI: 10.1109/TNS.2004.828785
Source: IEEE Xplore

ABSTRACT The DZERO experiment began RunII datataking operation at Fermilab in spring 2001. The physics program of the experiment requires the Level 3 data acquisition (DAQ) system system to handle average event sizes of 250 kilobytes at a rate of 1 kHz. The system routes and transfers event fragments of approximately 1-20 kilobytes from 63 VME crate sources to any of approximately 100 processing nodes. It is built upon a Cisco 6509 Ethernet switch, standard PCs, and commodity VME single board computers (SBCs). The system has been in full operation since spring 2002.

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