1. ORNL is managed by UT-Battelle for the US Department of Energy Status Report: Data Acquisition and Instrument Controls for the Spallation Neutron Source Presented to EPICS Collaboration Meeting Steven M. Hartman Group Leader, DAQ and Controls Neutron Sciences Directorate Michigan State University May 19, 2015

2. 2 EPICS Collaboration Meeting, May 2015 SNS DAQ and instrument controls are undergoing major system redesigns Original SNS DAQ and ControlsNew SNS DAQ and Controls Windows with 5 sub-networks / beamlineLinux with simplified network architecture Discrete software components with custom signaling network protocol Client-server architecture LabVIEW and custom network protocolsEPICS Channel Access and PV Access Lots of separate GUI applicationsIntegrated GUI client using CS-Studio File based data translation to NeXus at end of experiment run Network based translation to NeXus concurrent with experiment run Digitization electronics incorporated in detector assembly with Channel Link interfaces between boards In conceptual design phase In-house development of all softwareLeveraging existing software in the community and collaborations These upgrades are concurrent with supporting 17 operational and commissioning instruments

3. 3 EPICS Collaboration Meeting, May 2015 New instrument controls for enhanced capability and improved reliability EPICS is fully operational at 4 SNS instruments and 1 HFIR instrument: sample environment, motion controls, neutron choppers, online data view, etc. Successfully commissioned two new instruments with EPICS EPICS subsystems running at 7 additional SNS instruments Computing and network infrastructure for EPICS in place at all SNS instruments The EPICS toolkit provides a robust framework for instrument controls Presentation: Matt Pearson Thursday AM

4. 4 EPICS Collaboration Meeting, May 2015 CS-Studio client tools are used for all aspects of instrument controls CSS/BOY provides a synoptic user interface for instrument control and monitoring and online view of data acquisition Scan Server enables experiment automation tools Archive Viewer displays trends for engineering data for troubleshooting Alarm System provides fault notification for off-normal conditions PV Table allows save/restore/compare snapshots for instrument configuration management CS-Studio provides an integrated user interface for instrument control and data acquisition

5. 5 EPICS Collaboration Meeting, May 2015 CS-Studio Scan Server provides a robust mechanism for experiment automation OPI GUI: enter and submit in an intuitive graphical interface Alignment Scan: scan a motor and perform fittings on detector counts Table Scan: complex nested loops easily entered in a spreadsheet format GUI Scan builder: drag and drop editing of scans Python Scripting: programmatically generated scans for greater flexibility Presentation: Kay Kasemir Wednesday PM A variety of user interfaces meet different instrument needs and preferences

6. 6 EPICS Collaboration Meeting, May 2015 nED DAQ software for better performance at high data rates w/enhanced maintainability nED is modeled on AreaDetector and designed to support the SNS neutron event data format nED has demonstrated data capture with rates of ~5M neutron events per second Performance adequate for all SNS instruments Fully integrated with streaming data to Mantid and NeXus file generation EPICS V3 Channel Access provides detector configuration control and status monitoring for detectors and DAQ EPICS V4 PV Access protocol streams data to client tools Presentation: Greg Guyotte Wednesday PM

7. 7 EPICS Collaboration Meeting, May 2015 EPICS V4 is in production for neutron event data with nED and ADnED EPICS V4 offers high performance for structured neutron event data AreaDetector-based ADnED using V4 provides online view, runtime statistics and counting criteria Online data plots of detector XY, time-of-flight, d-space, energy transfer,... Regions of interest and counting statistics for automated scans Python-based V4 tools developed for detector calibration and diagnostics nED and ADnED will be deployed to beam lines along with EPICS-based instrument controls Presentation: Matt Pearson Wednesday PM

8. 8 EPICS Collaboration Meeting, May 2015 We are now deploying an all-new software stack for SNS instruments Instrument Controls Software Data Acquisition Software HFIR Imaging 2013-A ✔ SNS Vulcan 2014-A ✔ TBD SNS CORELLI 2014-B ✔ 2015-A SNS USANS 2014-B ✔ 2015-A ✔ SNS VISION 2015-A ✔ SNS HYSPEC2015-B SNS Sequoia2015-B SNS Liquid Reflectometer2016-A All 18 SNS InstrumentsBy 2018 ✔ Completed as of May 19, 2015 Seven instruments will be operating with EPICS by the end of 2015

9. 9 EPICS Collaboration Meeting, May 2015 Questions and Comments