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D-tAcq Solutions using MDSplus segments for high speed long pulse data acquisition

Long pulse data capture with live update

  • Continuous streaming data from digitizer to MDSplus
  • 96ch x 500kHz = 96MB/s
  • Streams to Linux host computer with MDSplus trees on SSD, 1000s.
  • Live data plots with MDSplus and EPICS
  • Continuous archive to MDSplus using long pulse extensions

The key tech behind this is:

  1. PCI-Express streaming interface
  2. SSD - fast disk drive
  3. MDSOBJECTS segmented put (C++ lib used)
  4. Use BIG segments (last year they were big, but not big enough)
  5. Partition the problem over multiple cores and subtrees.

Presentation and Demonstration Videos

Play now
(currently Chrome only)
Play now
(Other browsers)
Download video to play locally
(Hi Res)
Presentation Presentation Introduction
Demo Demo Demo
Archive Archive MDSplus Archive
Cleanup Cleanup Post Shot Cleanup

More information about D-TACQ products used in these demonstrations can be found here: