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Timing upgrades after LS1

Timing upgrades after LS1. Timing for frond-end computers CBCM (LHC injector chain) Dedicated central timing for AD New FESA interfaces New SPS Start/Stop management New SPS coast management New SPS energy saving management Master/Slave mechanism removed Other changes Planning

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Timing upgrades after LS1

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  1. Timing upgrades after LS1 Jean-Claude BAU BE-CO-HT

  2. Timing for frond-end computers • CBCM (LHC injector chain) • Dedicated central timing for AD • New FESA interfaces • New SPS Start/Stop management • New SPS coast management • New SPS energy saving management • Master/Slave mechanism removed • Other changes • Planning • Conclusion Outline Jean-Claude BAU BE-CO-HT

  3. Timdt timing library • Available since mid 2012 • Integrated in FESA 3 • Compatible with TGM library in a same front-end • Need a specific startup sequence • TimService instead of Get-tgm-tim & Timload • TimService provides all services for timdt & TGM • Local timing renovation • Replacement of all TG8s by CTRs • Part of the ACCOR project Timing for front-end computers Jean-Claude BAU BE-CO-HT

  4. AD removed from the LIC central timing • AD will have its own central timing located in the building 193 • Needed for the future ELENA decelerator • Beam will be negotiated with their rdv points (PS extraction and AD injection) • Synchronization negotiated in absolute time • PS extraction and AD injection can move independently • No changes in the way the PS beams for ADE are declared in a BCD. • Deployment for mid-march 2014 CBCM: Dedicated central timing for AD Jean-Claude BAU BE-CO-HT

  5. The CTIM GM class has been migrated to 4 FESA 3 classes: • CTIM_Machine (Machine phase) • CTIM_Virtual (Events family) • CTIM_Key (Events sent on the GMT cables) • CTIM_Asynchronous (Triggered events) • The MTG GM class has been migrated to 2 FESA 3 classes: • MTG_ExCond (External conditions) • MTG_CCVGroup (Control of a Telegram group) • The CYPAR GM class has been migrated to the CycleParam FESA 3 class • All the new FESA device names will have the suffix "-CTML" instead of "-CTM“ (ex: EC.128-CTM EC.128-CTML) • Consult the wiki pagehttps://wikis/display/CBCM/User+Doc#UserDoc-CBCMUSERINTERFACESto know the relationship between the GM and new FESA classes CBCM: New FESA interfaces Jean-Claude BAU BE-CO-HT

  6. ROCS replaced by the FGCD framework • Pulse start/stop will be managed by the FGCs at any place in a supercycle • Pulse start/stop synchronized with the central timing • The pulse start/stop BCDs will be not required anymore in a sequence. CBCM: New SPS Start/Stop management Jean-Claude BAU BE-CO-HT

  7. The FGCs will be able to suspend/recover the execution of a function. It will be driven by the timing. • To be coastable, a SPS cycle must be : • Declared as coastable • To be alone in the supercycle • The same cycle must be declared in normal and spare. • The normal must be linked to the PS but not the spare • The LIC central timing • will go in coast on demand • will play the normal or the spare depending on the coast state • Normal for coast prepare, ‘spare’ for coast and coast recover • During a SPS coast • Impossible to change the sequence/BCD being executed • Impossible to change the SPS supercycle • BCDs for coast prepare, coast and coast recover are not needed anymore in a sequence CBCM: New SPS COAST management Jean-Claude BAU BE-CO-HT

  8. The full economy mode will be able to start at any place in the supercycle • Partial economy mode will be controlled only by the BCT which measures the beam in the SPS injection line. • All these new SPS features are described in a document (draft state) CBCM: New SPS energy saving management Jean-Claude BAU BE-CO-HT

  9. Master/Slave mechanism was used to upgrade the LIC central timing in real time • Functionality not used since LHC • Upgrades made only during technical stops or shutdowns • Disruption of the timing distribution during an upgrade • Fast upgrade rollback is implemented • Significant simplification of the LIC central timing • 2 front-ends instead of 5 CBCM: Master/Slave mechanism removed Jean-Claude BAU BE-CO-HT

  10. All the SPS legacy timing events have been removed • OX.xxxx-CT, OIX.xxxx-CT, OEX.xxxx-CT • Ion & Proton at the same time in the SPS • Ion for North area & proton for other destinations • The central timing will help to protect the North area from receiving protons CBCM: Other changes Jean-Claude BAU BE-CO-HT

  11. After mid-March, smooth upgrades will be necessary to tweak the central timing systems. CBCM: Planning Jean-Claude BAU BE-CO-HT

  12. No revolution but significant improvements to the Operation • No new constraints added to the Operation • Some complexities have been removed • Simplifies diagnostics • Increases the reliability Conclusion Jean-Claude BAU BE-CO-HT

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