1 / 54

Operational Tools at the Stanford Linear Accelerator Center

Operational Tools at the Stanford Linear Accelerator Center. Greg White, for many, many, great programmers, scientists and engineers from the SLAC Controls Department, operations and physics groups. SLAC Tools Technology Timeline. SLAC Tools Technology Timeline. SLAC Tools Technology Timeline.

ahava
Download Presentation

Operational Tools at the Stanford Linear Accelerator Center

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Operational Tools at the Stanford Linear Accelerator Center Greg White, for many, many, great programmers, scientists and engineers from the SLAC Controls Department, operations and physics groups. Greg White, Stanford Linear Accelerator Center, 2007

  2. SLAC Tools Technology Timeline Greg White, Stanford Linear Accelerator Center, 2007

  3. SLAC Tools Technology Timeline Greg White, Stanford Linear Accelerator Center, 2007

  4. SLAC Tools Technology Timeline Greg White, Stanford Linear Accelerator Center, 2007

  5. Past 20 years! - The SLAC Control Program “SCP” (pronounced “skip”) Greg White, Stanford Linear Accelerator Center, 2007

  6. Hierarchy of Applications Dynamically Linked Libraries Greg White, Stanford Linear Accelerator Center, 2007

  7. Hierarchy of Applications Dynamically Linked Libraries Greg White, Stanford Linear Accelerator Center, 2007

  8. SCP Application “Integration” Greg White, Stanford Linear Accelerator Center, 2007

  9. The SCP’s Characteristics Advantages Integrated Applications, tools and science Rocket Fast Seamless User Interface One executable, giving macros Greg White, Stanford Linear Accelerator Center, 2007

  10. Beamline “z” plots Greg White, Stanford Linear Accelerator Center, 2007

  11. Save/Restore (aka “configs”) Greg White, Stanford Linear Accelerator Center, 2007

  12. Beam Position Monitors (BPM) Greg White, Stanford Linear Accelerator Center, 2007

  13. Reference BPM Orbit Greg White, Stanford Linear Accelerator Center, 2007

  14. Extant BPM Orbit Greg White, Stanford Linear Accelerator Center, 2007

  15. Beam Position Difference Orbits Greg White, Stanford Linear Accelerator Center, 2007

  16. Difference (Actual Orbit minus Reference Orbit) Greg White, Stanford Linear Accelerator Center, 2007

  17. Modelling Greg White, Stanford Linear Accelerator Center, 2007

  18. Orbit fitting Greg White, Stanford Linear Accelerator Center, 2007

  19. Steering (Orbit Correction) Greg White, Stanford Linear Accelerator Center, 2007

  20. Orbit Correction min || Ax - b ||2 subject to xj xjmax • Correction “methods”: • - Robust Chi Sq • - Paired correctors to bpms • - Micado • - SVD • - others now seldom used • Simultaneous Orbit and Dispersion Correction • Transport or closed orbit • Optional Boundary conditions (eg constant injector region) • If underconstrained, finds soln with smallest corrs • Iteratively removes BPMs with poor fit (liars) • Handles degenerate system matrix (by SVD) but • includes peak amplitude constraints (corrector Bmax) http://www.slac.stanford.edu/pubs/slacpubs/7000/slac-pub-7653.html Greg White, Stanford Linear Accelerator Center, 2007

  21. Multi-knobs Greg White, Stanford Linear Accelerator Center, 2007

  22. Example MKB file Greg White, Stanford Linear Accelerator Center, 2007

  23. Bumps Greg White, Stanford Linear Accelerator Center, 2007

  24. “Button Macros” Greg White, Stanford Linear Accelerator Center, 2007

  25. “Button Macros” Greg White, Stanford Linear Accelerator Center, 2007

  26. “Correlation Plots” * Steps any controllable thing, reads any, up to 160, readable values * Beam Synchronous - knows what to do * Total integration - eg step ring frequency, do orbit fit, read fit params * Includes plotting, fitting, optimization (eg implements quad scan) Greg White, Stanford Linear Accelerator Center, 2007

  27. History/Archive Data Chart Types: stripchart, Overlay, A vs B (interpolated), expressions in A, B and C Linear and Log axes Auto or manual scaling axes Greg White, Stanford Linear Accelerator Center, 2007

  28. The SCP’s Characteristics Advantages Integrated Applications, tools and science Rocket Fast Seamless User Interface One executable, giving macros Disadvantages Very difficult to upgrade basis technology Single threaded, one thing at a time Impossible to collaborate VMS based Greg White, Stanford Linear Accelerator Center, 2007

  29. SCP - Matlab - XAL - Eclipse - CA integration Timeline Greg White, Stanford Linear Accelerator Center, 2007

  30. Transitionary Phase - Present Greg White, Stanford Linear Accelerator Center, 2007

  31. Beam Profile Image Management in Matlab Thanks to Sergei Chevtsov Greg White, Stanford Linear Accelerator Center, 2007

  32. Bunch Length Measurement Thanks to Mike Zelazny Greg White, Stanford Linear Accelerator Center, 2007

  33. Matlab based feedback! Thanks to Diane Fairley Greg White, Stanford Linear Accelerator Center, 2007

  34. Transitionary Phase - Future (immediate) Greg White, Stanford Linear Accelerator Center, 2007

  35. Hybrid environment for applications (now in dev.) From “LCLS Apps from 20000ft” (G. White) http://confluence.slac.stanford.edu/x/lBk Greg White, Stanford Linear Accelerator Center, 2007

  36. SLAC Eclipse Accelerator Lab (SEAL) Modelling Greg White, Stanford Linear Accelerator Center, 2007

  37. SEAL including Control System Studio (CSS) Thanks P.Chu, K.Kasemir, S.Chevtsov Greg White, Stanford Linear Accelerator Center, 2007

  38. SEAL Formatted Displays (ready to print, logbook) Thanks S. Chevtsov Greg White, Stanford Linear Accelerator Center, 2007

  39. Control Data Flow for Scientific Applications Greg White, Stanford Linear Accelerator Center, 2007

  40. Access to Archive/History Data Greg White, Stanford Linear Accelerator Center, 2007

  41. Middleware, connecting legacy to modern software George McIntyre, Bob Sass, Bob Hall, Ron MacKenzie, Greg White Greg White, Stanford Linear Accelerator Center, 2007

  42. Command Line Aida Greg White, Stanford Linear Accelerator Center, 2007

  43. AidaWeb: Web -> Excel, Scripts (by wget), Web Browser, Web Apps Greg White, Stanford Linear Accelerator Center, 2007

  44. Aida (pure java API) in matlab History/Archiver access and plot Greg White, Stanford Linear Accelerator Center, 2007

  45. Matlab java lessons • datenum() converts time format data to plotable floats • datetick tells current plot() to scribe axis with date/time • textual date/time to float conversion is very costly ( soln. use say unix time rather than text ) • Put java VM options in Matlab secret file java.opt. Greg White, Stanford Linear Accelerator Center, 2007

  46. Aida CORBA Performance Double: 1 or 2 ms, sometimes more Nd Vector DaValue: < 10 ms, Median 3 ms, sometimes more. Eg History, BPM, model Linear up to tested 4MBytes Greg White, Stanford Linear Accelerator Center, 2007

  47. Future XML Performance -> SOAP -> WS -> GRID Performance http://www.w3.org/XML/EXI/ Greg White, Stanford Linear Accelerator Center, 2007

  48. Efficient XML Interchange Working Group of W3C Performance of EXI candidates on XAL with lossless compression (no XML Schema) Binary XML EXI Processor High perf XML processor http://www.w3.org/XML/EXI/ Greg White, Stanford Linear Accelerator Center, 2007

  49. EXI (Binary XML) on EPICS Archiver XML-RPC data EXI candidates on EPICS Archiver without compression (no XML Schema) > 7 X faster in network and processing time (More efficient float being added) Greg White, Stanford Linear Accelerator Center, 2007

  50. Sparklines Edward Tufte http://www.edwardtufte.com http://sparkline.org/ Greg White, Stanford Linear Accelerator Center, 2007

More Related