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LHC Performance Workshop (Chamonix) Introduction Frédérick Bordry 18 th January 2016

LHC Performance Workshop (Chamonix) Introduction Frédérick Bordry 18 th January 2016. Chamonix 2014 (22 nd -24 th September) Conclusions. Frédérick Bordry 8 October 2014. 22 nd September 2015 from Les Aiglons.

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LHC Performance Workshop (Chamonix) Introduction Frédérick Bordry 18 th January 2016

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  1. LHC Performance Workshop (Chamonix) Introduction FrédérickBordry 18th January 2016

  2. Chamonix 2014(22nd-24th September) Conclusions Frédérick Bordry 8 October 2014 22nd September 2015 from Les Aiglons

  3. 9th meeting of CERN Machine Advisory Committee (CMAC9) linked to Chamonix CMAC members Brinkmann Reinhard DESY Fischer Wolfram BNL Gourlay Stephen LBNL Holtkamp Norbert SLAC Oide Katsunobu KEK Qing Qin IHEP Roser Thomas (chair) BNL Seeman John SLAC Shiltsev Vladimir FNAL Meetings during Chamonix (afternoon, morning, evening). Closed session on Friday 26th September at CERN. CMAC Close Out : Friday 26th September at 15h30. Main focus of CMAC9: strategy for the restart of the machine, plan for LIU & HL-LHC, optimizing luminosity

  4. CMAC9 recommendations R1: The re-commissioning time for Heavy Ions should be clarified with well-defined milestones. R2: Develop integrated luminosity evolution plan for 2015 and Run II as a whole. R3: Schedule sufficient study time to resolve the luminosity limitation due to instabilities during LHC commissioning in 2015. R4: Develop a robust system to identify and prevent the unnecessary beam aborts due to UFOs. R5: Prepare a minimum SPS upgrade plan that satisfies the beam performance requirements of the HL-LHC project as soon as possible. R6: Investigate the loss mechanism during the first hour of LHC stores and develop mitigating efforts for the HL-LHC project. R7: Document the scope, schedule and cost estimates for the HL-LHC in time for the cost & schedule review planned in March 2015 and pick one scenario for the purpose of costing and scheduling. Clearly distinguish the options from the baseline and define the advantages/ risks/ cost/ timelines R8: Perform a sensitivity study from beginning to end (LINAC -> HL-LHC) that demonstrates the margins/losses/beam requirements system by system (accelerator by accelerator) in synchronization with LIU planning. R9: Perform “the return on investment” analysis for the proposed consolidation activities and take that into account in the decision of what to fund when. R10: Determine the effects of recent and expected changes in radiation regulations on the material handling in LS2. Extend the estimation of radiation safety beyond LS2 through the entire HL-LHC to evaluate the impact on the project and the inevitable cost.

  5. LHC goal for 2015 and for Run 2 and 3 • Priorities for the 2015 run : • Establish proton-proton collision at 13 TeV with 25ns and low* to prepare production run in 2016. • Optimisation of physics-to-physics duration • Later in 2015: decision on special runs “when and duration” (90m optics): not in the 1st part of the year. Waiting LHCC recommendation • Pb-Pb run: one month at the end of 2015 The goal for Run 2 luminosity is 1.3 x 1034 cm-2 s-1 and operation with 25 ns bunch spacing (2800 bunches), giving an estimated pile-up of 40 events per bunch crossing. “A maximum pileup of ~50 is considered to be acceptable for ATLAS and CMS”

  6. LHC goal for 2015 and for Run 2 and 3 Integrated luminosity goal : 2015 : 8-10 fb-1 (13 TeV, 25 ns) Run2: 100-120 fb-1 (better estimation by end of 2015) 300 fb-1 before LS3

  7. Cost & Schedule review of LIU and HL-LHC (March 2015)

  8. The LIU and HL-LHC projects Cost and Schedule Review 9-11 March 2015; Chair: N. Holtkamp (CMAC 10) The goal of the cost and schedule review of the LIU and HL-LHC projects is to assess the status and risks of both projects This review will cover the LIU and HL-LHC projects, taking into consideration their working hypothesis linked to the Consolidation project and the operation of the CERN accelerator complex. This review will not assess the cost and schedule of the Consolidation project nor the operation of the accelerator complex. • Four major activities ongoing in parallel: • Accelerator complex operation • Accelerator Consolidation Program • LHC Injector Upgrades (LIU) • High Luminosity LHC upgrade

  9. MTP – HL-LHC revised cost profile R&D phase: 27 MCHF Construction phase: 950 MCHF

  10. Physics LHC roadmap: schedule beyond LS1 Shutdown Beam commissioning Technical stop LS2 starting in 2018 (July) => 18 months + 3 months BC LS3 LHC: starting in 2023 => 30 months + 3 months BC Injectors: in 2024=>13 months + 3 months BC (Extended) Year End Technical Stop: (E)YETS 30 fb-1 YETS EYETS YETS YETS Run 2 LS 2 Run 3 LS 2 Run 2 Run 3 PHASE 1 YETS LS 3 Run 4 YETS LS 3 Run 4 300 fb-1 PHASE 2 LS 4 Run 5 LS 5 LS 4 Run 5 LS 5 Goal of 3’000 fb-1 by mid 2030ies

  11. Physics LHC roadmap: according to MTP 2016-2020 Shutdown Beam commissioning • LS2 starting in 2019 => 24 months + 3 months BC • LS3 LHC: starting in 2024 => 30 months + 3 months BC • Injectors: in 2025=>13 months + 3 months BC Technical stop Run 3 HL-LHC Civil engineering Run 2 LS 2 LIU installation PHASE 1 Run 4 Run 4 Run 3 LS 3 PHASE 2 HL-LHC installation LS 4 LS 5 LS 5 LS 4 Run 5

  12. 2015 LHC Integrated Luminosity • The initial projections of integrated luminosity for 2015 were ~ 8-10 fb-1. • Achieved ~ 4.3 fb-1. • Slope at the end of the run better than in 2011, and close to 2012 slope • (last week of operation > 1 fb-1) The main reasons for the lower value: • - Start-up delays (~ 4 weeks), • - Availability issues: • radiation failures on the quench protection tunnel electronics; solved after TS2 • - Electron clouds mitigation

  13. LHC Performance Workshop (Chamonix 2016) 1st preparation meeting: 1st September 2015 4 general preparation meetings Spirit: no status but open questions and scenario discussions Difficult selection through DHs, Project Leaders and Session Chairs (125-135 participants per session; overbooking !) • Review 2015 performance: hardware and beam limitations • LHC hardware performance: reliability (MTBF), availability(MTTR) and operational efficiency (Integrated Luminosity). Identify possible areas for improvement • Defined operational scenario for 2016/Run 2 and establish a strategy for Run 2; • Energy increase scenarios (13 TeV towards 14 TeV) • LIU; HJL-LHC (technical review and not Cost & Schedule review) • (E)YETS and Long Shutdown 2 Strategy and Preparation

  14. Colliding with SPC, FC and Council !

  15. LHC Performance Workshop (Chamonix 2016) Session 1: Lessons from 2015 Chair: Jorg Wenninger Scientific secretary: Kajetan Fuchsberger Session 2: Key Challenges for Operation Chair: Mike Lamont Scientific Secretary: Chiara Bracco Sessions 3 & 4: LHC Hardware Performance Chairs: Matteo Solfaroli, Markus Zerlauth Scientific secretaries: Mirko Pojer, David Nisbet Session 5: 2016 and Run 2 Chair: Paul Collier Scientific secretary: Giulia Papotti

  16. LHC Performance Workshop (Chamonix 2016) Session 6: LIU Chairs: Malika Meddahi, Giovanni Rumolo Session 7: HL-LHC Chairs: Lucio Rossi, Oliver Bruning Session 8: (E)YETS [(Extended) Year End Technical Stop and Long Shutdown 2 Strategy and Preparation Chair: José Miguel Jiménez, Scientific Secretary: Jean-Philippe Tock

  17. CERN Machine Advisory Committee (CMAC11) • Fischer Wolfram BNL • Gourlay Stephen LBNL • Holtkamp Norbert (chair) SLAC • Oide Katsunobu KEK • Qing Qin IHEP • Seidel Mike PSI • Shiltsev Vladimir FNAL • Vedrine Pierre CEA • Zimmermann Frank CERN(scientificsecretary) Closed session on Friday 29th January at CERN CMAC Close out : Friday 29th January at 13h30 (CERN - Room Georges Charpak)

  18. Summary session LHC Performance Workshop (Chamonix 2016) Thursday , 3rd March 2016 14:00, Main Building https://indico.cern.ch/event/486336/

  19. LHC PERFORMANCE WORKSHOP (Chamonix 2016) – 25th to 28th January 2016 Shuttles Buses (Europtour) leave CERN from bldg. 33 (near the flags) and Chamonix from Hotel Les Aiglons TimetableBldg 33->Les Aiglons Les Aiglons ->Bldg 33 Monday 25th January 07:00 & 14:30 13:00 & 20:30 Tuesday 26th January 07:00 & 14:30 (No transport at 13:00) – 20:30 Wednesday 27th January 07:00 & 14:30 13:00 & 20:30 Thursday 28th January 07:00 & 11:00 13:00 & 17:30

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