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Safe Machine Parameters in LHC

Safe Machine Parameters in LHC. Safe Machine Parameters in LHC. …ENERGY…. Energy Implementation 2010. Energy Implementation 2010. switch between A and B. Energy Implementation 2010. switch between A and B. ≈ 0.5 Hz cross-check

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Safe Machine Parameters in LHC

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  1. Safe Machine Parameters in LHC

  2. Safe Machine Parameters in LHC …ENERGY…

  3. Energy Implementation 2010

  4. Energy Implementation 2010 switch between A and B

  5. Energy Implementation 2010 switch between A and B ≈ 0.5 Hz cross-check dipole currents must be equivalent to BLM energy reading (1%)

  6. Intensity Implementation 2010

  7. Intensity Implementation 2010 switch between A and B no cross-check SMP 3v0 – 2011 will implement complete redundancy Energy and Intensity will be from multiple sources

  8. Outstanding Issues - SMP 2v0 HW 1. Remove an external ROM – HW SBF glitch - MPP 2010-25 http://lhc-mpwg.web.cern.ch/lhc-mpwg/MPP-Meetings/No25-19032010/MPP_190310_minutes.docx ready ready ready ready waiting FESA JAVA HW SEQUENCER 2. Force SBF False at the start of every normal ramp – / / / . Improve SBF safety - modification authorised Evian 2010 http://indico.cern.ch/contributionDisplay.py?contribId=6&sessionId=3&confId=76921 study in progress 3. The Setup Beam Flag - HW / FESA / JAVA The limit is too low for some studies

  9. Generating the Setup Beam Flag

  10. Generating the Setup Beam Flag

  11. Outstanding Issues - SMP 2v0 HW 1. Remove an external ROM – HW SBF glitch - MPP 2010-25 http://lhc-mpwg.web.cern.ch/lhc-mpwg/MPP-Meetings/No25-19032010/MPP_190310_minutes.docx ready ready ready ready waiting FESA JAVA HW SEQUENCER 2. Force SBF False at the start of every normal ramp – / / / . Improve SBF safety - modification authorised Evian 2010 http://indico.cern.ch/contributionDisplay.py?contribId=6&sessionId=3&confId=76921 study in progress 3. The Setup Beam Flag - HW / FESA / JAVA The limit is too low for some studies ready ready ready FESA JAVA HW 4. Filter the Beam Presence Flag – HW / FESA / JAVA Extraction Denial of Service - MPP 2010-26 http://lhc-mpwg.web.cern.ch/lhc-mpwg/MPP-Meetings/No26-16042010/MPP_160410_minutes.docx It’s complicated 5. Improve the Beam Presence Flag Fast Beam Current Transformer is currently the limiting factor….

  12. Beam Presence Flag Signal Path

  13. Beam Presence Flag Signal Path

  14. Beam Presence Flag Signal Path

  15. Beam Presence Flag Signal Path

  16. Beam Presence Flag Signal Path

  17. Beam Presence Flag Signal Path Thresholds Definition https://edms.cern.ch/document/883620/

  18. Beam Presence Flag Signal Path From end of September 2010

  19. Beam Presence Flag Signal Path From end of September 2010

  20. Beam Presence Flag Signal Path From end of September 2010 + fibres to be pulled + new hardware from BI + testing and commissioning

  21. For high intensity beams we need to… Upgrade the operational controller → Ben & SMP Team When: next technical stop? Add a sequencer task → OP When: MPP to decide Release a new GUI → Ivan & SMP Team When: next technical stop? • Improve Beam Presence Flag safety • fibres in UA47 → Bruno & Fibre team • New BPM hardware unit → BI • Testing and Commissioning → BI & SMP Team • When: Ready for end of September Make the SBF more flexible → MPP & MI When:? Complete redundancy SMP 3v0 → many When: January 2011

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