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Synchronous Data Acquisition Workshop at PSI: Overview and Key Takeaways from the 2014 Event

DESCRIPTION

This workshop, led by Babak Kalantari (Paul Scherrer Institut), focused on Beam Synchronous Data Acquisition (BSDAQ) systems, held on May 5, 2014, at the Eli Beamlines in Prague. It covered various aspects of BSDAQ, including its on-demand configurations, continuous data collection methods, and system integration for real-time controls. The workshop provided a platform for discussing the architecture of data acquisition systems, the role of input/output controllers, and effective data management strategies across multiple nodes.

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Synchronous Data Acquisition Workshop at PSI: Overview and Key Takeaways from the 2014 Event

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  1. Paul Scherrer Institut • Babak Kalantari (GFA Controls) • Synchronous DAQ using Event System MRF workshop, Prague, Eli Beamlines 05.05.2014

  2. Beam Synchronous DAQ (BSDAQ) • IOC: I/O controller node, PV: e.g. EPICS channel • IOC_1 • PV_1 • PV_2 • PV_3 • IOC_2 • PV_4 • PV_5 • PV_6 • IOC_m • PV_7 • PV_8 • PV_9 • IOC_n • PV_10 • PV_11 • PV_12 • IOC_0 • PV_x • PV_y • PV_z • PV_2 • PV_6 • PV_7 • User interest: PV set across several IOCs distinguished from one pulse to the next • PULSE_1 • PULSE_2 • PULSE_3 • start • start • start • Pulser • Diag. • Pulser • Diag. • Pulser • Diag. • RF • RF • RF • … • … • … • Babak Kalantari (PSI); MRF workshop, Prague, Eli Beamlines, 05.05.2014

  3. Beam Synchronous DAQ (BSDAQ) • on-demand BSDAQ (in production) • runs only for specified number of pulses (seconds or minutes) • continuous BSDAQ (under design) • runs always at the background over a specified history window up to current time (e.g., last 2 days) • Babak Kalantari (PSI); MRF workshop, Prague, Eli Beamlines, 05.05.2014

  4. on-demand BSDAQ • Control System Network • post-acquisition data transfer • non real-time (EPICS CA) • Node_n • Node_1 • Local data collection at real-time • real-time • real-time • EVR • EVR • Timing&Event System Network • real-time (events + BSDAQ controls) • MasterTimingNode • EVG • real-time • Babak Kalantari (PSI); MRF workshop, Prague, Eli Beamlines, 05.05.2014

  5. on-demand BSDAQ usage • Computing Node • Local buffering for scalar or small data array (few KB) • pool of unassigned buffers • parallel users • data • pulse_id • device • EVR • trigger • on-system data buffering & tagging (large data size) • Measurement system • Computing Node • pulse_id • intern. data buffer • trigger • EVR • Babak Kalantari (PSI); MRF workshop, Prague, Eli Beamlines, 05.05.2014

  6. on-demand BSDAQ usage • High level DAQ framework • data analysis • storage • transfer • acquired data • BSDAQ • configuration • direct • EPICS CA • protocol layer (custom / EPICS v4 / CA) • BSDAQ • (IOC level) • Babak Kalantari (PSI); MRF workshop, Prague, Eli Beamlines, 05.05.2014

  7. Changingpolicy • Remote buffering, Continuous BSDAQ • IOC node_n • IOC node_2 • IOC node_1 • pulse_id_x PV_1 PV_2 PV_3 • device1 • device2 • device3 • EVR • Atomic snapshot • 100Hz trigger PV_1 PV_2 pulse_id PV_3 • Remote buffer cluster • (for the whole facility) • Babak Kalantari (PSI); MRF workshop, Prague, Eli Beamlines, 05.05.2014

  8. Continuous BSDAQ • Babak Kalantari (PSI); MRF workshop, Prague, Eli Beamlines, 05.05.2014

  9. Work management • common • deployment • procedure • System integration engineer • (Deployment) • generic • BSDAQ • package • R&D + • Tests + • prototype • System integration engineer • (Deployment) • (PSI internal resources) • H/W design & production • MRF (external company) • Babak Kalantari (PSI); MRF workshop, Prague, Eli Beamlines, 05.05.2014

  10. Thanks! • Babak Kalantari (PSI); MRF workshop, Prague, Eli Beamlines, 05.05.2014

  11. BS-DAQ Mechanism • IOC • CA (controls net) • EVG • command • Master Timing: central point of BS-DAQ controls • Client, after DAQ: • retrieve data • analyze • Events + sync data • IOC_A • IOC_B • buffer • buffer • EVR • EVR • triggers • select • select • H/W_1 • H/W_3 • H/W_2 • H/W_4 • subsystem A • subsystem B • CA (controls net)

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