The DZERO Level 3 Data Acquistion System

B. Angstadt; G. Brooijmans; D. Chapin; M. Clements; D. Charak; D. Cutts; S. Fuess; A. Haas; R. Hauser; A. Kulyavtsev; D. Leichtman; S. E. K Mattingly; M. Mulders; P. Padley; D. Petravick; R. Rechenmacher; G. Watts; D. Zhang

arXiv · physics/0307070

The DZERO Level 3 Data Acquistion System

B. Angstadt·G. Brooijmans·D. Chapin·M. Clements·D. Charak·D. Cutts·S. Fuess·A. Haas·R. Hauser·A. Kulyavtsev·D. Leichtman·S. E. K Mattingly·M. Mulders·P. Padley·D. Petravick·R. Rechenmacher·G. Watts·D. Zhang

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Abstract

The DZERO experiment located at Fermilab has recently started RunII with an upgraded detector. The RunII physics program requires the Data Acquisition to readout the detector at a rate of 1 KHz. Events fragments, totaling 250 KB, are readout from approximately 60 front end crates and sent to a particular farm node for Level 3 Trigger processing. A scalable system, capable of complex event routing, has been designed and implemented based on commodity components: VMIC 7750 Single Board Computers for readout, a Cisco 6509 switch for data flow, and close to 100 Linux-based PCs for high-level event filtering.

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B. Angstadt, G. Brooijmans, D. Chapin, M. Clements, D. Charak, D. Cutts, S. Fuess, A. Haas, R. Hauser, A. Kulyavtsev, D. Leichtman, S. E. K Mattingly, M. Mulders, P. Padley, D. Petravick, R. Rechenmacher, G. Watts, D. Zhang. 2003-07-14. The DZERO Level 3 Data Acquistion System. https://arxiv.org/abs/physics/0307070

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