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Safe Machine Parameters General Machine Timing Cross-Check Safe Machine Parameters General Machine Timing Cross-Check 9 th May 2012 - 0v3
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CERN benjamin.todd@cern.ch SMP @ MPP SMP 3v0 - Introduction 2 *fast *safe *reliable *available generates flags & values afe achine arameters SM P and / ordirectly transmittedbroadcast receives accelerator information injection procedureprotection configuration CERN = System Safety Beam Interlocks Collimation Beam Loss Monitors … Extraction Interlocks
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CERN benjamin.todd@cern.ch SMP @ MPP Directly Transmitted
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CERN benjamin.todd@cern.ch SMP @ MPP CERN benjamin.todd@cern.ch SMP @ MPP Extraction Interlocks 4 Transfer Lines Beam-1 = TT60 + TI2 Beam-2 = TT40 + TI8 Super Proton Synchrotron Large Hadron Collider Extraction Master Beam Interlock Controllers
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CERN benjamin.todd@cern.ch SMP @ MPP Extraction Interlocks 5 Super Proton Synchrotron Large Hadron Collider
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CERN benjamin.todd@cern.ch SMP @ MPP Extraction Interlocks 6 three beam transfer conditions: probe set-up nominal Super Proton Synchrotron Large Hadron Collider SPS Machine Parameters LHC Machine Parameters Directly Transmitted Interlock Signals
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CERN benjamin.todd@cern.ch SMP @ MPP Broadcast
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CERN benjamin.todd@cern.ch SMP @ MPP Protection Configuration 8 Super Proton Synchrotron Large Hadron Collider LHC Machine Parameters Broadcast Safe Machine Parameters SPS Machine Parameters
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CERN benjamin.todd@cern.ch SMP @ MPP Controllers
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CERN benjamin.todd@cern.ch SMP @ MPP Two Controllers 10
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Safe Machine Parameters General Machine Timing Cross-Check Safe Machine Parameters General Machine Timing Cross-Check 9 th May 2012 - 0v3
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CERN benjamin.todd@cern.ch SMP @ MPP bis-smp-team@cern.ch CERN SMP @ TE-TM Cross-Checking 12
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CERN benjamin.todd@cern.ch SMP @ MPP Dangerous Circumstance 13 Safe Machine Parameters = Transmission Set-up Beam Flag stuck TRUE General Machine Timing Broadcast Energy stuck at 450 GeV parameters used by machine protection system
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CERN benjamin.todd@cern.ch SMP @ MPP Cross-Checker Implementation
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CERN benjamin.todd@cern.ch SMP @ MPP Cross-Checker (CISC) 15 For each parameter Record last 10 SMP transmissions Compare with current GMT transmission discrepancy = beam abort
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CERN benjamin.todd@cern.ch SMP @ MPP Cross-Checker (CISC) 16 also checks cable presence & parameter reception rate GMT can drop a parameter GMT can rearrange parameter transmission order GMT cannot change payload of parameter For each parameter Record last 10 SMP transmissions Compare with current GMT transmission discrepancy = beam abort One second now connected to BIS
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CERN benjamin.todd@cern.ch SMP @ MPP Cross-Checker (CISC) 17 For each parameter Record last 10 SMP transmissions Compare with current GMT transmission discrepancy = beam abort
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CERN benjamin.todd@cern.ch SMP @ MPP Cross-Checker (CISC) 18 For each parameter Record last 10 SMP transmissions Compare with current GMT transmission discrepancy = beam abort
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CERN benjamin.todd@cern.ch SMP @ MPP Cross-Checker (CISC) 19 Never observed… GMT drops a parameter GMT rearranges parameter transmission order Warnings recorded when: Interlock raised when: GMT drops three consecutive parameters GMT changes payload Automatic observation by CISC Never observed… Interlock through BIS
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CERN benjamin.todd@cern.ch SMP @ MPP Cross-Checker (CISC) 20 Never observed… GMT drops a parameter GMT rearranges parameter transmission order Warnings recorded when: Interlock raised when: GMT drops three consecutive parameters GMT changes payload Automatic observation by CISC Never observed… Interlock through BIS
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CERN benjamin.todd@cern.ch SMP @ MPP Cross-Checker (CISC) 21 Pre-op / DIAMON / Post-Op now functional complete logging functional simple format See J.-C. Garnier up next 1) Arm loops… 2) Send single bad energy in timing editor… 3) Observe… Reactive consolidation / maintenance only New needs = new requests e.g. LS1 SBF tables Does it actually work? SMP hardware project will be closed. SMP software project ongoing.
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CERN benjamin.todd@cern.ch SMP @ MPP fin – thank you!
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