1. 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

2. Sector 0 RF Master Oscillator Master Amplifier Fiducial Generator
Voltages
Temperature
Frequency
Power
Cross over switch
Master Amplifier
Power Levels
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 s Reports weekly
Analysis of Reference system
Fault analysis
Automatically s Reports daily
Klystron parameters

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.