Application Programming

1
Application Programming
DOE Review

• John Galambos
• AP Group

May 6-8, 2003
2
Outline

• Commissioning Experience
• Application Development
• Database progress
• Acknowledgements A. Aleksandrov, S. Assadi, C.
  Chu, K. Danilova, D. Gurd, S. Henderson, D.O.
  Jeon, W.-D. Klotz,C. Lionberger, J. Patton, T.
  Pelaia, A. Shishlo, C. Sibley, E. Tanke, E.
  Williams (ORNL), C. Allen, C. McChesney (LANL),
  D. Ottavio (BNL)

3
Electronic Log Book(Commissioning Experience)

• E-Log was available before commissioning, and
  used extensively (gt 2500 entries)

• Web access, uses database storage (easy for
  searching)
• Entries by logbook type, equipment category
• Viewable chronologically, or by thread
• Document attachment capability
• Stay abreast of progress remotely, partner lab
  access
• Great success, but need training on features

4
Save / Restore (Commissioning Experience)

• Started off pasting snapshots of control screens
  in the e-log.

• Introduced an EPICS tool BURT
• Not widely used
• Sometimes failed for unknown reasons
• Only grabbed settable quantities

• A new application was developed based on input
  requirements from operators / physicists (C.
  Lionberger)

5
Archiving (Commissioning Experience)

• Started off NOT systematically archiving data
• Controls group instituted comprehensive data
  archiving with the EPICS channel access archiving
  tool.
• System specific sets created with customized
  archiving intervals
• Every PV archived at regular intervals
• EPICS archiver provides general retrieval tools,
  but
• Need to write some customized tools
• Need to think of data culling schemes

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Archiving cont. (Commissioning Experience)
Signal / time window selection
Pick the archive
Output plot, spreadsheet, Matlab,

• EPICS toolset provides a web based data retrieval
  capability
• Data is being archived and can be retrieved

7
EPICS Tools, General(Commissioning Experience)

• Striptool
• Plot any signal vs. time
• A top 10 application
• Easy to use, drag drop signal names to it
• Used extensively
• Histogram tool
• Customized before commissioning

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Physics Applications(Commissioning Experience)
Matlab Programs

• Emittance app (controller analyzer)
• Worked well
• Similar program being prepared for DTL D-plate
• Java version to be done for permanent in-line
  emittance device
• RF Phase setting
• Used BPM signals, worked well
• Similar version being prepared for DTL tank 1.
• Converted to a more permanent Java program

Java version
Matlab version
9
Orbit Difference (Model vs. BPM)(Commissioning
Experience)

• Orbit difference Good agreement in orbit
  difference

• Orbit difference OK agreement in absolute orbit

10
Orbit Correction(Commissioning Experience)

• No Correctors

• With Correctors

• It works, can run in background continuously,
• MEBT was so simple, operators tended to correct
  by hand.
• Can be used throughout SNS

11
Xiodiag General purpose signal
browser(Commissioning Experience)

• Xiodiag pick an accelerator sequence, and then
  pick a set of signals to display
• Provides live tabular or plot displays
• Used as the de-facto orbit display
• Have since improved display limit controls

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Scripting(Commissioning Experience)

• Magnet ramper to cycle on magnets jython script
  with Java GUI

• Other scripts for
• Misc. Matlab python programs for jitter
  analysis
• Correlating BCM signals
• Beam based alignment
• Parasitic data grabbing for beam initial
  condition analysis
• Useful tool, used by those familiar with
  scripting.

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Scope Application(Application Development)

• Need integrated display of time dependent
  information (BPMs, RF, Current monitors, BLMs, )
• Also use it to display diagnostic triggers
  relative to ion source and RF gates.
• Add general formula capability
• Updated the accelerator physics requests for
  signals from diagnostics (more information see
  http//www.sns.gov/APGroup/appProg/appProg.htm )

14
General Purpose X-Y Correlator(Application
Development)

• Used only by specialist during commissioning
• Added features for easier user interface
• Uses XAL correlator package to ensure correlated
  data pairs
• 2D 3D versions

15
MPS Post Mortem (Application Development)

• During commissioning it was difficult to identify
  the root cause of an MPS trip (many dependent MPS
  events happened)
• MPS Post mortem gathers MPS signals by
  macropulse, and sorts them by time within the
  macro-pulse.

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Application Framework (Application Development)

• A Framework Foundation to create applications is
  written, and provides
• Common UI for apps
• Follows typical windows paradigm
  (document-view)
• Gives a jump-start for application development
• Built-in help
• Easy to modify menubar toolbar
• Offers possibility to enhance all applications at
  once

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Lattice Generation(Application Development)

• General framework within XAL for an online model
  is written
• Integrated with the XAL framework
• Previous online model called external FORTRAN
  code
• Generalized lattice generator being developed
• Create input files for external lattice programs
  (e.g. Trace-3D, Transport, DYNAC, MAD,
• Use either design values, or live machine values
• Use the database as the repository for machine
  data and lattice configuration

18
Database Population(Beamline components)

• gt 1500 Beamline components (items that would show
  up in a lattice file) are populated
• Magnet measurement data population has started

19
Magnet Current to Field Translation

• Java program reads measurement information from
  database, does fit, and stores fit information in
  the database
• Pull-down pick list for magnet selection
• To be used in programs running on IOC computers
  providing magnet field information

20
Database Access

• Web interfaces for reading http//www.sns.gov/AP
  Group/GlobalDatabase/GDatabase.htm
• Links to Microsoft Access / Excel for editing
  data, etc.
• Database used for linac data in latest issue of
  global coordinates

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Conclusions

• First round of applications done, working on next
  set
• Lessons
• Need to familiarize people with application
  features before commissioning.
• Need GUI interfaced applications for general
  users.
• Have integrated help capability, common look/feel
• Testing with Virtual Accelerator before
  commissioning helped