Download MPG Beam Code

A Portion of the SCP RF
Control System
LCLS Related
Many items have been omitted because I forgot to
include them
R. Akre June 27,
If I redid this talk weekly for 20 years I would get
2008
• Master Oscillator
–
–
–
–
–
Sector 0 RF
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
Timing System MPG Beam Code
PNET, PP YY, and all the other stuff I don’t
RF System Triggers 1
Reactivate or Deactivate
Klystrons on Different Beam
Select Rates for Klystrons
with Conditional Statements
RF System Triggers 2
Beam conditional requirements for
triggers
240+ Klystrons in Linac
Monitors VVS voltage and
VVS control voltages and Status
Fast Time Plots many Parameters
Waveforms and Jitter
Data Selection Based on Beam
Routines for Setup
Fortran routines to calculate No-Load Energies and Measure
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
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
Saturation Fast Time Plot
Accept saturated value as attenuator set
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
Fault Error Counting
• Counts faults every day
• Can count faults from set
time onward or from 8:00am
History of Jitter
History Buffers
Last 24 hours with press of a button
History Buffer Correlations
Variety of ways to display data
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
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
Diagnostic Panels 1
• 25 Years of Software Development
• Many diagnostic panels
• Can read and write to low level hardware
Diagnostic Panels 2
Routines to measure sensitivity of phase shifters
Routines to enter polynomials for phase shifters into database
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
This presentation was only a
small portion of the features the
SLC control system has built in.