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Enhancements in DQLPU Type A Production for Improved Quench Heater Supervision

On November 23, 2012, the production of 1300 new DQLPU Type A protection units commenced, enhancing the protection of 1232 dipole magnets. The new design integrates improved quench heater supervision and compatibility with redundant linear power supplies, while enabling remote commands for operational efficiency. This upgrade aims to bolster reliability and diagnostic capabilities, crucial for future upgrades and reducing the need for manual interventions. The project timeline includes the production of 300 crates by January 2014, addressing resource allocation and safety measures in the production environment.

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Enhancements in DQLPU Type A Production for Improved Quench Heater Supervision

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  1. TE-MPE-EP New DQLPU type A TE-MPE-EP, VF, 23-Nov-2012 Production of 1300 new protection units

  2. TE-MPE-EP Why a new DQLPU type A? • To improve protection of 1232 dipolemagnetsthanks to: • Integrationof the enhancedquenchheatersupervision • Compatibility with new fullyredundantlinear power supplies • Remotecommands,… TE-MPE-EP, VF, 23-Nov-2012

  3. DQLPU: old / new configuration Current front view Fip connector SYKO DQQDL#A DQQDL#B DQAMC New front view x 1300 Fip connector TE-MPE-EP, VF, 23-Nov-2012 Programmingconnector Externallinear DC power supplies

  4. Internal hardware change in the new implementation Motherboard (viewedfrominside): 1300boards to beproduced V taps Voltages power supplies DQHSU Input signalsUHDS+trigger and Spare I loop in/out DQQDL#A DQQDL#B DQCSU SPARE DQHSU DQAMC FIP con./PROG. • DQAMC: • Communication board to the supervision. • 100boards to beproduced. Re-use local quench detector • Quenchheater supervision unit. • DQHDS voltage measurement. • Fastcurrent and voltage recordingduring a dischargeof DQHDS through the Heaters. • 1350boards to beproduced. For future upgrades • Crate supervision unit: • Supervise all voltages. • Test presenceof the currentloop. • Remotepower cycling. • 1350boards to beproduced. TE-MPE-EP, VF, 23-Nov-2012 • Fip connector + DQAMC • reprogrammingconnector and future nanoFipboard emplacement. • 1350boards to beproduced.

  5. TE-MPE-EP • To takeadvantage of this long shutdown • To improve the reliability of thisequipment. E.g. fullyredundant power supplies. • To have more diagnostic toolssuch as the state of the quenchheaters or to localise a interruption of the quenchloopcurrent . • To savesomephysical interventions by someremotecommands. • Remark: Old DQLPU_A ishighlydependable. Mightbedifficult to reproducethisdependability, given the increasedcomplexity of the new system. Why during LS1? What are the risks and/or the impact if not done during LS1? TE-MPE-EP, VF, 23-Nov-2012 • More physical interventions will be necessary due to more SEUs on uFip circuits (higher energy). • Risk of not detectingfault in quenchheaters.

  6. TE-MPE-EP Timeline TE-MPE-EP, VF, 23-Nov-2012 • 300 crates ready by 01/2014: • 9 racks/day45 racks/week • 4weeks/sector

  7. Manpower Identification of missing ressources: Ressources as usualverytight TE-MPE-EP, VF, 23-Nov-2012

  8. Resources from other MPE sections:

  9. Resources from other groups:

  10. Potential issues Late delivery components Company orders from internal purchase services may not be delivered Conflictwith otheractivities (CSCM, LINAC4) Building 281 not ready on time TE-MPE-EP, VF, 23-Nov-2012

  11. Safetymeasures • Personalsafety: Bd.281: standard procedure like any other laboratory space. No particular risk to test the DQLPUs, except for the Hipot test at 2.5KV, which will require H1T/H2T habilitation. Safety inspection required with EE (Mathieu) for the machine tools and mechanics space. • Tunnel equipment: • As usual, but access only required for uninstallation and reinstallation. • All the DQLPUs must be cleared by RP before taking them out and NO destructive operation foreseen on the reused equipment. That means no soldering work on them. TE-MPE-EP, VF, 23-Nov-2012

  12. What SW tools are planned to be used? Are they ready to be used? Who will provide them? SW tools TE-MPE-EP, VF, 23-Nov-2012

  13. Questions • Is there any benefit to further automate the process of your tasks (testing, commissioning)? YES What would be the effort implied? • Automatic tools for commissioning IST. E.g. interlock tests. To be defined. • Current tools already done in LabVIEW but might be better to move them to Java. • Work package for MS section (to bedefined). • What is the long term strategy regarding to maintainability of testing equipment and related software? • Test benches will be maintained by EP section (Building 281). • Tools for system exploitation: there are still LabVIEW and Java based tools: common strategy to be defined to have a unique platform. • Do you foresee other potential showstoppers? (Like delay for supplying components, administrative constraints..). • Implementation of the power supplies redundancy in DQLPU type B: to be done on-site (no external resource). • In case of problems it must be understood that the DQLPU upgrade and the R2E activities are critical for the restart of the machine (priority must be given). • Other less critical tasks may be delayed if necessary, during Christmas shutdown for instance. • Finance TE-MPE-EP, VF, 23-Nov-2012

  14. Currentstatus for new boards Time frame Action alreadytaken TE-MPE-EP, VF, 23-Nov-2012

  15. Currentstatus for re-usedboards TE-MPE-EP, VF, 23-Nov-2012

  16. Currentstatus for mechanical enclosures TE-MPE-EP, VF, 23-Nov-2012

  17. Currentstatus for connectors for mechanical enclosures Time frame Action alreadytaken TE-MPE-EP, VF, 23-Nov-2012

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