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HL-LHC New MS optimisation WP9, Preliminary cost estimates

Explore optimizations in the HiLumi project, with an emphasis on cost savings and preliminary estimates. Key focus on the re-use of existing components and adjustments for efficiency.

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HL-LHC New MS optimisation WP9, Preliminary cost estimates

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  1. HL-LHCNew MS optimisationWP9, Preliminary cost estimates S. Claudet (TE-CRG) 31Aug’18

  2. Kept to avoid removing Q6 Translated, with possible “minor” adjustments of length QXL, “baseline” QRL kept untouched (20m) 1 3 2 X Length to be adjusted re-using elementary components HiLumi MS Optimisation, WP9 savings, Preliminary

  3. Interfaces QRL-SAM’s Evolution required from present LHC configuration • DFBL & Q6 jumpers would be the same, at the same place • Q5jumpers would be the same, translated where needed • Q4 as real stand-alone (doublet Q4-D2 at present) • Re-doing a new single service module + jumper not considered for the moment (would require more effort/cost but more compact) • The jumper on Q4 deal as well with the DSL-link cooling • The 2nd jumper corresponds to what is presently installed for D2 • Header configuration for Q4-D2 jumpers depends on the Interaction Point and tunnel slope • Q4 instrumentation to be adapted to stand-alone architecture (TT, LT, EH) • For Q4, proposal to re-use the existing service modules translated where needed, with Q4/D2 jumper translated and to be adapted to required length/position 2 not touched, 2 translated, 1 translated and adapted HiLumi MS Optimisation, WP9 savings, Preliminary

  4. Savings (preliminary estimates) Rmk: Present QXL longer than for initial CtC, to be adjusted separately • Dismantling of QRL: 10%, ratio “1”/QRL_to_be_cut (as it was foreseen to make clean cuts for additional spares) • Positioning, installation: 10%, ratio “1”/QRL_to_be_cut (only marginal extra costs to adapt extremities for welding) • Supply of QXL elements: • Less pipe elements: 4 x 50m • Less service modules: 4 x 3 SM • Impact on QXL (less volume for quench buffering, 20K header): t.b.c (instrumentation included above, Junction module foreseen anyway) • Impact on spares: 250 kCHF (existing for QRL, few type less for QXL: Service modules for SAM’s) ~ 3-4 MCHF t.b.c HiLumi MS Optimisation, WP9 savings, Preliminary

  5. HiLumi MS Optimisation, WP9 savings, Preliminary

  6. P1/P5 Cryogenic architecture 18 kW equivalent at 4.5 K, including 3 kW at 1.8 K Warm compressor station SHE After Cost to Performance reviewing done mid 2016 QSVB GHe storage tanks Surface piping SHM QSCG QSAG Dryer QSP Surface cold box SLN SD SLN QSDQ Quench tank QSRG QSDN Liquid Nitrogen tanks Surface Shaft QPP QPLG Vertical transfer line Underground US Cold compressors box QURCG DFHX DFHM (existing) DFBL UR UL DSHM QUIG DSHX DSL LHC tunnel Interconnection box Q1 Q2a Q2b Q3 CP D1 D2 CC CC Q4 Q5 Q6 QRP QXL WRL HRL HiLumi MS Optimisation, WP9 savings, Preliminary

  7. Junction module QRL-QXL HiLumi MS Optimisation, WP9 savings, Preliminary

  8. Junction module QRL-QXL Work on-going 3.5 m 4.0 m 4.5 m It should fit within 12m + it could help (volume, cost) with smaller valves, especially in case this element could be a show stopper !!! HiLumi MS Optimisation, WP9 savings, Preliminary

  9. Possible modes and implications, as identified so far for HiLumi Decreasing requirements in cooling capacity HL • Ultimate Luminosity (HL) • Nominal Luminosity (HL) • Nominal Luminosity (LHC) • Low Luminosity / Intensity . Powering conditions to 7TeV, (maybe pilots or few bunches) • Injection stand-by (He preservation in magnets, ELQA, maybe pilots or few bunches at injection) • Magnets @20K => The maximum reasonably possible WRL Bonus (only 1st year) Junction Module QRL-QXL Desired (1 wk) Mandatory (few wks) LHC => Junction Module and bridge between WRL’s recommended => Corresponding cooling capacities and impact on size/cost/volume to be further investigated HiLumi MS Optimisation, WP9 savings, Preliminary

  10. HiLumi MS Optimisation, WP9 savings, Preliminary

  11. Cooling P1/P5 SAM’s Return Module Return Module View from integration views DB D2 QXL QRL Q4 Q5 • Access / safety / sectorisation ? • Powering from existing RR & DFBL, corresponding cooling of DFBL and SAM’s to be with same origin • (QRL or QXL but not mixed) • Q4 and Q5 possibly with remote alignment, compatible with QRL ? • 3D models to be implemented and then integrated (Q2-2018 for CRG) Q6 NEW Jan’18 Q4-Q5 could remain at 4.5K (already the case for Q6), and moved towards the arc by 10-11m HL LHC Present limit for QRL/QXL HiLumi MS Optimisation, WP9 savings, Preliminary

  12. Cooling capacity Cooling capacity for SAM’s & DFBL to come from main sector Refrigerators Cooling capacity margins will be aligned on other sectors (56 higher as no IT nor RF) HiLumi MS Optimisation, WP9 savings, Preliminary

  13. Summary • Cooling capacity of matching section could be taken by main sector cryoplants without creating a weak point • It should be possible to re-work 70m/side of existing QRL elements, with service modules not changed and pipe elements kept or adapted • About 12m would be required for the junction module QRL-QXL between Q4 and crab cavities • The use of remote alignment should be taken without problem by existing QRL elements (provided it remains within existing tolerances) HiLumi MS Optimisation, WP9 savings, Preliminary

  14. IP1-left (ref. LHCLSQR_0107) 4 HiLumi MS Optimisation, WP9 savings, Preliminary

  15. IP1-right (ref. LHCLSQR_0035) 4 HiLumi MS Optimisation, WP9 savings, Preliminary

  16. IP5-left (ref. LHCLSQR_0043) 4 HiLumi MS Optimisation, WP9 savings, Preliminary

  17. IP5-right (ref. LHCLSQR_0044) 4 HiLumi MS Optimisation, WP9 savings, Preliminary

  18. Summary table * new Q4 jumper (former D2) HiLumi MS Optimisation, WP9 savings, Preliminary

  19. Elementary units of QRL “LEGO-like” HiLumi MS Optimisation, WP9 savings, Preliminary

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