Advanced Accelerator Applications (AAA)

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• Advanced Accelerator Applications (AAA)
• Low Energy Demonstration Accelerator
• (LEDA)

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LEDA Status

• Advanced Accelerator ApplicationsLow Energy
  Demonstration Accelerator
• Recently completed the Beam Halo Experiment
• Fielded new systems
• Magnets on Halo beamline
• New wire scanner and halo scraper mechanisms and
  software
• Vacuum for halo beamline
• Successful data acquisition
• Data analysis shows good correlation with models
• Verification of halo leads to questions about
  why
• More to come
• As of last week, future uncertain but bleak

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LEDA Beam Halo Challenges

• Diagnostics
• Wire scanner / Halo scrapers
• LabView -gt EPICS
• Automated scans and scrapes through EPICS
  sequence/OPI
• Magnets
• 52 magnet latticeon Halo beamline
• 4 quadrupole singlets
• 48 quadrupole bulks/ 6 bulk supplies with 8
  shunts
• Field Point I/O
• Ethernet IP
• LabView-gt EPICS
• Control System Integration
• Run permit
• Operations support
• Many different systems
• Support systems, data taking, EPICS, UNIX,
  Labview, all tools

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Control System for the LEDA 6.7-MeV Proton Beam
Halo Experiment
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LEDA Lessons Learned

• Fielding new hardware in an upgrade
• Behind schedule
• When it doesnt work
• No local experts or support
• Let the engineer program it
• LabView is easy but
• All programs are different
• Novice vs. expert
• More layers to debug
• No revision control
• Guess who gets called
• Control System Integration
• Run permit
• vxStats
• Cant guarantee run permit when you dont have
  into
• Archiving, time stamps
• Operational Support
• Communication
• Teamwork/support

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LEDA Lessons Learned

• Maintenance nightmare
• Many different systems
• few people to support them
• Need to call experts to troubleshoot
• Revision control
• No consistency
• Cant enforce
• What Worked Well
• Operations support
• Assigned, on-call
• Responsive
• ELOG
• Archiving
• Standard EPICS systems