1. Planning of Injector Activities for Linac4-to-PSB Connection and LS2 Thanks to all the valuable input from the LIU project leaders and LIU work- package holders + precious planning help from D. Hay, S. Mataguez and D. Mcfarlane B. Mikulec

2. Linac4 Connection to the PSB Linac4 reliability run ends in 2016 Linac4 connection to PSB in principal possible starting end 2016 Studied (next slides): duration of necessary PSB activities for the connection alone (no other upgrades+consolidation) Linac4 transfer line commissioning to LBE and provision of beam for the PSB is in the shadow of the PSB activities (see presentation J-B. Lallement) Activities of other machines have to stay in the shadow of the PSB activities

4. PSB Planning Overview for L4 connection to PSB Consider purely Linac4 connection to PSB; >200 activities Main activities: cabling campaign (estimated to 2 months), magnet exchange (BI line), vertical beam distribution, injection kickers, injection section (chicane + injection foil), beam instrumentation

5. Time-critical Activities for L4 connection to PSB - Installation of injection section, in particular BSW magnets; fit in beam instrumentation and foil equipment installation; KSW HV testing (1 month) after machine closure in parallel with HW testing and cold checkout

6. Summary L4 Connection to PSB Activities  Duration for the Linac4 connection to the PSB would amount to 9 months (indeed a new baby…)  Remark: First ‘guesstimate’ was 1m cool-down + 3m installation + 3m beam commissioning = 7 months considering only ABT activities without cabling campaign  First beam to the PS after 7.5 months  Probably not very realistic; in addition almost no room for compression; could gain 1 month if 2016 run ends with ions Start Dec – End AprilRadiation cool-down + Installation 1.5 + 3.5 months = 5 months End April – End MayKicker HV testing + general HW testing 1 month End May – End AugustCommissioning with beam 3 months Mid JulyFirst beam to PS

7. Boundary Conditions for LS2 Planning Studied: PSB, PS and SPS Considered: All tunnel activities Mainly LIU activities, but also include Usual machine opening/closing activities Estimated radiation cool-down times ESTIMATED cabling campaign durations (not SPS) and Consolidation items that could affect the overall LS duration. Surface activities only included if they affect LS duration First estimates for beam commissioning times Assume common start of LS2 for PSB, PS and SPS: December 4 th, 2017. Beware: THIS IS ONLY A VERY ROUGH FIRST DRAFT!

8. PSB LS2 Planning First 1.5 months also needed for radiation cool-down (2w for standard works after stop of run) Cooling system renovation: start dismantling transfer line cooling stations; time-critical item for the PSB (7m min. duration); non-negligible risk of delays  possible mitigation? The cabling campaign duration needs to be confirmed Detailed planning still to be worked out, but activities fit into this planning at first sight  LS2 duration for PSB: 16 months MPS testing Renovation of PSB cooling system Dismantling and installation in parallel Cabling campaign Run in new RF system 2w + 1m 7m 5m Beam commissioning 4m 5.5m 3m Equipment tests and HV DC conditioning BE.KFA14L1 5m Ventilation consolidation (work in tunnel possible, but partly no redundancy) Ventilation consolidation (work in tunnel possible, but partly no redundancy) 12m Start connecting and testing equipment After 2m first beam to PS MPS testing 2m MPS Testing (new MPS building) Close PSB

9. Main PSB LS2 Activities Renovation of PSB injection line, new vertical beam distribution system at injection, complex new injection section with charge-exchange stripping foil, related beam instrumentation, injection and painting chicanes, internal dumps, new vacuum sectorisation etc. (see planning for Linac4 connection to PSB) New MPS Renovation of cooling and ventilation systems RF upgrade New or improved beam instrumentation Modifications to main magnet cooling circuits + shimming; replacement of several additional magnets New extraction kicker, new recombination kicker and septa

10. PS LS2 Planning

11. PS LS2 Planning Summary Radiation cool-down: 1 month General access: January 22 nd 2018 Assumed duration of cabling campaign: 3 months Magnets: new vertical correctors and normal/skew quadrupoles (2 GeV) – 5 months; replace PFW – 1 year (consolidation) New injection kicker, bumper, septum – 4 months RF: duration defined by general maintenance BI: not time-critical (BWS, BLMs, injection SEM grid, IPM?) Close PS: beginning of January 2019 3 weeks of hardware test and 3 weeks of cold check-out (inter-leaved) Beam from PSB expected beginning of February 2019 First beam to SPS: March 1 st 2019.

12. SPS LS2 Planning

13. SPS: RF 200 MHz Upgrade - Schedule

14. SPS: LS2 changes in LSS3

15. SPS: RF200 MHZ – LS2 Details New building to be finished with all services by mid (now end?) 2015 New amplifiers installation to start in new building beginning 2016 First six months of LS2 (Feb - end July 2018) for cavity rearrangement in LSS3 −Cabling −Cooling system −Removal of all 18 existing cavity sections −Displacement/install new cavity supports −Displacement/installation new pickups −Re-install 18 existing cavity sections −Installation 2 new cavity sections −Installation 6 new coupler covers −Installation 6 new main power couplers −Vacuum connections and tests −Alignment  Details of LSS3 interventions and schedule to be worked out  Availability of key services (cabling, CV, VSC) to be verified Second six months of LS2 (August 2018 – end Jan 2019) for system commissioning and tests

16. SPS: aC Coating Technology now developed for treating chambers in magnets Needs to be done in special workshop (underground or surface tbd) Tested for MBB and MBA chambers, and pumping ports 4 SPS half-cells now equipped Scope of deployment still not clear: priority probably  MBB, MQ, MBA, LSS drifts  Magnets to include adjacent pumping ports + shields

17. SPS: aC Coating Assume done in underground workshop ECX5 Transport time alone needs 124 days (if no extra Dumont transport machine built, and no shifts) Coating time in WS – can treat 6 magnets per day Total time around 120 days (needs transport shifts) Needs LS2 lengths of at least 6 months (count 7 months with time to build WS, ramp up, etc.) This is for main dipoles only and based on outdated assumptions – need to revise fully – in progress (23 rd )!! Sectors Sector type Average time install or remove magnet [min] Dumont journey Average time Dumont-trailer transfer [min] Trailer journey Average time loading or unloading in ECX5 [min] Total time go and return [min] Quantity of magnets per sector type Total time for transport per sector [h] Average distance [sextants] Time / sextant [min] Average time of journey [min] Distance [sextants] Time / sextant [min] Average time of journey [min] 418-518 / 518-6181200,536180014015106248438 304-418 / 618-1312200,73625,210114 10158344908 218-304 / 131-2183200,33610,8103144210186152470 Total transport time (all magnets) [h]1816 Average time of transport / magnet [h]2,44 Working time / day for each Dumont (6 magnets / day) [h]7,3 Total transport time (all magnets) with 2 Dumont [jours]124

18. SPS LS2 Planning Summary General access: 29 th January 2018 Critical interventions: 200 MHz upgrade: 1 year; cannot be split aC coating: >7 months No (consolidation) cabling campaigns yet included in planning End of LS2 works: 11 th February 2019 Patrols, DSO tests (~2 weeks) 6 weeks for EPC tests ~2 weeks cold checkout (mid-April 2019) 1 month for beam commissioning (short; new SPS RF beam control!) First beam available for LHC: mid-May 2019 Should aim at reducing milestone of mid-April (beam available from PS 1 st of March)

19. Preliminary Conclusions Connection Linac4 to PSB:  Duration beam-to-beam for LHC: 9 months LS2 (Linac4 connection and 2 GeV Upgrade): Currently limited by SPS activities (16 months seem reachable for PSB+PS) First beam to the PS: beginning of February 2019 First beam available for the SPS: beginning of March 2019 First beam to the LHC: mid-May 2019  Total duration of LS2 for the LHC: 17.5 months