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MPS Commissioning Report from the MPSC subgroup

MPS Commissioning Report from the MPSC subgroup. Jan Uythoven For the Members of the MPSC subgroup. Membership.

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MPS Commissioning Report from the MPSC subgroup

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  1. MPS CommissioningReport from the MPSC subgroup Jan Uythoven For the Members of the MPSC subgroup

  2. Membership • Jan Uythoven (chairman), Alick Macpherson (secretary),Ralph Assmann, Roger Bailey, Bernd Dehning, Brennan Goddard, Eva Barbara Holzer,Verena Kain, Mike Lamont, Blanca Perea Solano,Laurette Ponce, Bruno Puccio, Stefano Redaelli, Rudiger Schmidt, Benjamin Todd, Jorg Wenninger, Markus Zerlauth. • (Other) EICs:Reyes Alemany Fernandez,Magali Gruwe,Walter Venturini-Delsolaro. LHCCWG, 25th September 2007

  3. Outline • General description, plans • Based on presentation to the MAC on 15th June • Present status • Based on presentation in MPSCWG on 12th September by Alick Macpherson • Detailed info at: http://lhccwg.web.cern.ch/lhccwg/MPS/mps.htm LHCCWG, 25th September 2007

  4. Mac Talk LHCCWG, 25th September 2007

  5. Introduction • Core elements of the LHC Machine Protection System • Beam Interlock System • Beam Dumping System • Beam Loss Monitoring System • Collimation System • Quench Protection System & Powering Interlocks • Injection System • Together with other elements they will need to guarantee the ‘safety’ of the LHC = equipment protection • Detect any equipment state or beam state that is potentially dangerous • Dump the beam before damage to equipment can occur • This safety of the system needs to be guaranteed (SIL 3) by • Good system design • Redundancy between subsystems • Redundancy within critical subsystems • Reliable system components • Careful follow-up during production and installation • Thorough commissioning of the system • Individual System Tests • System commissioning with and without beam LHCCWG, 25th September 2007

  6. The LHC Machine Protection System & Interfaces LHC Devices Movable Detectors Beam Loss Monitors BCM Experimental Magnets Environmental parameters Collimator Positions LHC Devices Safe Beam Parameter Distribution LHC Devices SpecialBLMs Safe LHC Parameter Software Interlocks Sequencer Operator Buttons CCC LHC Experiments Transverse Feedback Beam Aperture Kickers Collimation System Beam Dumping System Beam Interlock System Safe Beam Flag Injection Interlock Powering Interlocks sc magnets Powering Interlocks nc magnets Magnet Current Monitor Beam loss monitors BLM Beam LifetimeFBCM Access System Vacuum System Screens / Mirrors BTV RF System Timing System (Post Mortem Trigger) Monitors aperture limits (some 100) Monitors in arcs (several 1000) Magnets Power Converters QPS (several 1000) Power Converters ~1500 AUG UPS Cryo OK Doors EIS Vacuum valves Access Safety Blocks RF Stoppers LHCCWG, 25th September 2007

  7. Commissioning has Started! • LHC Hardware Commissioning • Individual System Tests of LHC on the way • Experience of MPS equipment with the powering of the first LHC sector • SPS operation 2006 and 2007 • Fast Magnet Current Change Monitoring in 2006 and later in 2007 • Beam Interlock Systems following same design as LHC BIS being used for • CNGS and TT40/TT60 (towards LHC!) extraction interlocking • SPS ring interlock in 2007 • LHC-like beam permit loop with clients connected to the dump through one of the 6 BICs connected to the loop • Safe Beam Flag for CNGS operation • Proof of the hardware and the design choices that have been made • Experience concerning commissioning and operations of systems similar to those that will be used in the LHC LHCCWG, 25th September 2007

  8. Safe Beam Flag status Software Interlock System Input Inputs 1 to 7 are always un-maskable Inputs 8 to 14 are always maskable Mask status SPS Extraction towards to LHC Using SPS Extraction BIS J.Wenninger LHCCWG, 25th September 2007

  9. Timing of kicker, BIC permit and BETS: - PFN voltage - BIC permit - Beam - BETS window Extr. 1 Extr. 2 SPS extraction BIS information Signals as seen on an oscilloscope for testing the interlock system Beam Energy Tracking System considers dipole DCCT and HV of extraction kicker: Same hardware as for the LHC Beam Dumping System (but reverse logic) LHCCWG, 25th September 2007

  10. Depth in seconds wrt Time offset Time offset wrt start of cycle Check this box to hold selected time range values Check this box to freeze display Extraction permit switching to TRUE for extraction (3 ms wide) SPS extraction BIS information Bar graph summarising the status of the interlock system LHCCWG, 25th September 2007

  11. Fast Magnet Current Change Monitor: MBG 4101M – Interlock Triggers at 10-4 change of I nominal FMCM triggers @ 3984.4 =10E-4 3 FMCMs were operational last year and tested following well defined procedures. Modified CERN types (better adapted for pulsed magnets and additional controls interface) will be installed later this year M. Zerlauth,Adapted DESY design LHCCWG, 25th September 2007

  12. LHC Hardware CommissioningD2.L8 presently under test Quench event at 17018 ms • Presently being commissioned: • Quench Protection System & PIC system • Obtain experience with: • Tools for Post Mortem and Logging • Sequencer Current ramp Current starts to change 17.027 ms Quench heaters efficient 17.026 ms Quench loop reading PIC 17021 ms Signal to BIC Quench detected 17018 ms LHCCWG, 25th September 2007

  13. Plans for (further) Commissioning and follow-up • Thorough commissioning of the Machine Protection System: • Individual System Tests • Part of the LHC Hardware Commissioning • LHC Cold Check-Out period (machine closed, ready for beam) • System commissioning with beam • Different phases depending on beam intensity and beam energy • Special attention to the links between the different systems Most hours of MPS testing before first beam, Some systems completely tested before beam  LHCCWG, 25th September 2007

  14. 100 % Tested before First Beam LHC Devices Movable Detectors Beam Loss Monitors BCM Experimental Magnets Environmental parameters Collimator Positions LHC Devices Safe Beam Parameter Distribution LHC Devices SpecialBLMs Safe LHC Parameter Software Interlocks Sequencer Operator Buttons CCC LHC Experiments Transverse Feedback Beam Aperture Kickers Collimation System Beam Dumping System Beam Interlock System Safe Beam Flag Injection Interlock Powering Interlocks sc magnets Powering Interlocks nc magnets Magnet Current Monitor Beam loss monitors BLM Beam LifetimeFBCM Access System Vacuum System Screens / Mirrors BTV RF System Timing System (Post Mortem Trigger) Monitors aperture limits (some 100) Monitors in arcs (several 1000) Magnets Power Converters QPS (several 1000) Power Converters ~1500 AUG UPS Cryo OK Doors EIS Vacuum valves Access Safety Blocks RF Stoppers LHCCWG, 25th September 2007

  15. MPS Commissioning Working Group • Sub working group of the LHC Commissioning Working Group • Six Nine meetings since November 2006 • 20 Members: • Two people per main system • Engineers in charge • + a few others • Webpage: http://lhccwg.web.cern.ch/lhccwg/MPS/mps.htm Mandate of Sub-Working Group on the Commissioning of the Machine Protection System " Produce the detailed (=step by step) description of the commissioning of the LHC Machine Protection System and record the test results. " The aim is to have a first version available by June / July 2007.  ...but was defined with circulating beam in mind for November 2007… That is going to be tight…. LHCCWG, 25th September 2007

  16. Detailed Procedure for Each System • Follow standard format for tests to be performed at the different phases • Identical to LHC HC strategy • To be published and approved by MPS comm. wg members • Specific tests are listed and tabulated LHCCWG, 25th September 2007

  17. Format of the Procedures LHCCWG, 25th September 2007

  18. Manufacturing and Test Folder (MTF) • Each Described Test is to be found back in the MTF system • The Status of the Test (passed, not passed, pending) and possible test reports are kept in this system • Identical system to what is being used for the LHC Hardware Commissioning • Many of the MPS tests will be done during the LHC Hardware Commissioning • Need to have compatible systems: • MPS commissioning procedures can refer to LHC HC procedures LHCCWG, 25th September 2007

  19. SECTOR HC REGION EQUIPMENT & EQUIPMENT GROUPS The Hardware Commissioning Manufacturing & Test Folder B. Perea Solano Organization of the stored information within arborescence LHCCWG, 25th September 2007

  20. Validation of the tests performed to the equipment External Properties (LDB) + Property Values (test variables) + Parameters (historical tracking) Report documents, journals, EDMS, etc. LHCCWG, 25th September 2007

  21. Within MTF specific reports (=views) can be created to show the progress of the commissioning as an example by region for all the systems LHCCWG, 25th September 2007

  22. Status of Written Procedures See Update on Later Slide • Some of the procedures exist and are well advanced, (almost) ready for distribution within edms • PIC, FMCM, Vacuum System • Advanced (already presented) • BIS system, BLM system • Next presentations • Injection System, WIC System • Outstanding main systems (but already worked upon) • Beam Dumping System, Collimation System • Other systems – need to be assigned to people to write procedures: • Experiments, RF & Feedback, Aperture Kickers & AC dipole, Safe Beam Flag etc. • After comments and approval to be described in MTF • Results of tests to be entered in MTF • Custom reports to be created to follow progress LHCCWG, 25th September 2007

  23. MPS Commissioning Hardware Commissioning Etc. Cold Check-out Injection RF System Beam Dumping System Injection System Collimation System Ramp LHCCWG & LTC Increasing Intensity Etc. Different Procedures & Work in other Groups • LHC Hardware Commissioning WG: • Procedures per System – create for MPS if it does not exist • LHC Commissioning Working Group • ‘Procedures’ are given per phase of LHC Commissioning • First Injection (pilot), energy ramp, increasing the intensity etc. • MPS commissioning • Procedures are per System, over all phases LHCCWG, 25th September 2007

  24. Besides Procedures • MPS Commissioning Working Group is a forum to discuss different items related to the MPS commissioning and operation • Establishes a team of experts who can be called in during LHC operation when required • Training for Engineers In Charge LHCCWG, 25th September 2007

  25. Topics concerning the MPS under discussion in the different working groups • BLM operation • Which thresholds to set? • Proposed 30 % of quench level, for the arcs, this concerns operational efficiency and not machine protection • When and How to change BLM settings? • Are remote changes via ‘Management of Critical Settings’ more risky than a local change? • Procedure for disabling single BLMs when required • Protection settings (collimators) during the different phases of LHC commissioning • Relation with limits on beam parameters (beta beta, orbit etc.) during the different commissioning phases • Interlocking Strategy of the Aperture kicker and Ac Dipole • Based on keys and LHC Safe Beam Flag LHCCWG, 25th September 2007

  26. Some slides from the presentation by Alick Macpherson in the MPS Comm. Wg. Of 12th September 2007 MPSC Procedures: Status To be started: MKA & AC dipole, movable objects of experiments, Safe Beam Flags,…

  27. Timetable for Completion of Procedures • All out-standing procedures submitted to Jan by 1st October*. • Procedures returned to groups after review/cross check by Jan/Alick • Expect ~ 1 week per procedure for review and feedback and 2 weeks for corrections. • Target: Review 1 procedure per week. • Review process started with BIS procedure • From 1st October, start EDMS checking procedures • Target: 1 per week. • Start with BIS procedure • As EDMS approval finishes, transfer to MTF. • Allow 1 week for transfer to MTF • Look to have all procedures in MTF by mid December * Collimator procedure linked to presentation at MPSCWG on 3rd 10th Oct

  28. Procedures: More Observations • Most procedures have had a first revision • Still awaiting some procedures • Question: is data/state logging considered part of MPS commissioning? • MPSC Commissioning should (where possible) be modular • Use hardware commissioning to set entry conditions for front end systems. • HWC Procedures + results (MTF) to be confirmed by MPSC procedure • Test the interface with the BIS => complementary to BIS Commissioning • Set exit conditions that allow the system to proceed to validations during cold machine cold checkout or validation with beam. • MPSC validation must insure that there is no possibility of machine protection risks due to operator controls • => procedures to confirm that operators can’t change critical settings? • Dependency on info from BIS and other systems must be made clear • Beam Info flag should not be used for any critical action! Answer ~ no Nice discussion point…

  29. Conclusions • The Commissioning of the LHC Machine Protection System has already started • LHC Hardware Commissioning • SPS extraction and ring Beam Interlock System, FMCM • Proof of the hardware design choices that have been made • Experience concerning commissioning and operations of systems similar to those that will be used in the LHC • To guaranteea ‘Safe’ LHC operation, the commissioning procedures of the different MPS components • Are being described in detail following a fixed format, distributed and agreed upon • Will be followed up in the Manufacturing and Test Folder • A lot of work still to be done • On paper (procedures, MTF, reports) • In reality, following the paper work • The fruits of the work should be: • Limited confusion during LHC commissioning, with and without beam • Never see the destructive potential of the LHC being confirmed LHCCWG, 25th September 2007

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