Physics NotePublished
The E791 Parallel Architecture Data Acquisition System
S. Amato; J.R.T. de Mello Neto; J. de Miranda; C. James; D.J. Summers; S.B. Bracker
1992
Publication details
- Authors
- S. Amato; J.R.T. de Mello Neto; J. de Miranda; C. James; D.J. Summers; S.B. Bracker
- Type
- Physics Note
- Status
- Published
- Publication date
- 1992
- Description
- To study rare charm decays at Fermilab, we built a high speed data acquisition system for use with the E791 magnetic spectrometer. The DA system read out 24,000 channels in 50 micro-seconds. Events were accepted at the rate of 9,000 per second. Eight large FIFOs were used to buffer event segments, which were then compressed and formatted by 54 processors housed in 6 VME crates. Data was written continuously to 42 Exabyte tape drives at the rate of 9.6 Mb/second. During the 1991 fixed target run at Fermilab, 20 billion physics events were recorded on 24,000 8mm tapes; this 50 Terabyte data set is now being analyzed.
- Year
- 1992
- Number
- CBPF-NF-013/92
- Linked to a thesis
- No
- Linked to a grant
- No