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A Portion of the SCP RF Control System LCLS Related

A Portion of the SCP RF Control System LCLS Related. Many items have been omitted because I forgot to include them If I redid this talk weekly for 20 years I would get closer to a complete summary of the SLC Control System. R. Akre June 27, 2008. Sector 0 RF. Master Oscillator Voltages

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A Portion of the SCP RF Control System LCLS Related

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  1. A Portion of the SCP RF Control SystemLCLS Related Many items have been omitted because I forgot to include them If I redid this talk weekly for 20 years I would get closer to a complete summary of the SLC Control System R. Akre June 27, 2008

  2. Sector 0 RF • Master Oscillator • Voltages • Temperature • Frequency • Power • Cross over switch • Master Amplifier • Voltages • Power Levels • Cross over switch • Fiducial Generator • Countdown Chassis • Sec 2 to 30 phase shifter • MTG Modules (PEP SLC) • PDUs FIDOs 360Hz • DRTC • MDL Interferometer • MDL Feedback

  3. Timing System MPG Beam Code PNET, PP YY, and all the other stuff I don’t understand

  4. RF System Triggers 1 Reactivate or Deactivate Klystrons on Different Beam Codes Select Rates for Klystrons with Conditional Statements

  5. RF System Triggers 2 Beam conditional requirements for triggers

  6. 240+ Klystrons in Linac Monitors VVS voltage and VVS control voltages and Status

  7. Fast Time Plots many Parameters Waveforms and Jitter Data Selection Based on Beam Codes

  8. Routines for Setup Fortran routines to calculate No-Load Energies and Measure Klystron Timing

  9. PIOP Data • Critical Parameters of Stations Quickly Available • Values, Expected Valued Tolerances • Trip Limits • Fault Status Available • The summary is shown, many pages of the full piop data is also available

  10. Some of the Maintenance Features • Local control of station • Control of timing • Control of amplitude • Eliminates Remote operation of station power level • Automatically e-mails Reports weekly • Analysis of Reference system • Fault analysis • Automatically e-mails Reports daily • Klystron parameters • Fault analysis

  11. Saturation Fast Time Plot Accept saturated value as attenuator set point

  12. High power RF Processing Algorithms • Normal and Slow start up modes • Auto fault recovery (Vacuum and RE) • Off for predetermined number of pulses on fault • Shut off after preset number of faults

  13. Fault Error Counting • Counts faults every day • Can count faults from set time onward or from 8:00am

  14. History Buffers History of Jitter Last 24 hours with press of a button

  15. History Buffer Correlations Variety of ways to display data

  16. Correlation Plots • Set up plot to collect data from SCP variables • Primary and Secondary step variables • Set up displays • Output to Matlab or Binary files • Save/Restore Button files • Record functions of variables • Powerful tool for diagnosing problems

  17. Beam Synchronous Acquisition • Collects buffered sequential synchronous data • Up to 330 variables at a time • Up to 2048 samples? • Export to Matlab • Save Button Files • Can display in many formats • Sequential • B vs. A correlation • FFTs

  18. Diagnostic Panels 1 • 25 Years of Software Development • Many diagnostic panels • Can read and write to low level hardware

  19. Diagnostic Panels 2 Routines to measure sensitivity of phase shifters Routines to enter polynomials for phase shifters into database

  20. CW Phase Monitors Monitor of Phase Reference System Bring up last 24 hour history with the press of a button Routines to calibrate phase shifters

  21. This presentation was only a small portion of the features the SLC control system has built in.

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