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Advanced Accelerator Applications (AAA) Low Energy Demonstration Accelerator

Advanced Accelerator Applications (AAA) Low Energy Demonstration Accelerator (LEDA). LEDA Status. Advanced Accelerator Applications—Low Energy Demonstration Accelerator Recently completed the Beam Halo Experiment Fielded new systems Magnets on Halo beamline

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Advanced Accelerator Applications (AAA) Low Energy Demonstration Accelerator

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  1. Advanced Accelerator Applications (AAA) Low Energy Demonstration Accelerator (LEDA)

  2. LEDA Status • Advanced Accelerator Applications—Low 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

  3. LEDA Beam Halo Challenges • Diagnostics • Wire scanner / Halo scrapers • LabView -> 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-> EPICS • Control System Integration • Run permit • Operations support • Many different systems • Support systems, data taking, EPICS, UNIX, Labview, all tools

  4. Consoles, Control Room Diagnostic Control High Power RF Systems Ethernet (Channel Access) Wave Guide Field-Point-IOC GPIB-IOC Injector and LEBT Server (File Server, Archiver, ….) PLC GPIB 2 Bus RFQ VXI-IOCs HALO Stepper Motor-IOC HEBT … LAN FP Steerer PS … Beam Stop FP FP Vacuum System Quads PS Control System for the LEDA 6.7-MeV Proton Beam Halo Experiment

  5. LEDA Lessons Learned • Fielding new hardware in an upgrade • Behind schedule • When it doesn’t 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 • Can’t guarantee run permit when you don’t have into • Archiving, time stamps • Operational Support • Communication • Teamwork/support

  6. LEDA Lessons Learned • “Maintenance nightmare” • Many different systems • few people to support them • Need to call “experts” to troubleshoot • Revision control • No consistency • Can’t enforce • What Worked Well: • Operations support • Assigned, on-call • Responsive • ELOG • Archiving • Standard EPICS systems

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