ALICE & LHCb LS2: PLANNING. Arturo Tauro Eric Thomas On behalf of ALICE and LHCb Collaborations
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1 ALICE & LHCb LS2: PLANNING Arturo Tauro Eric Thomas On behalf of ALICE and LHCb Collaborations
2 2 Years 2 ¼ years left LHCb & ALICE major upgrade ATLAS & CMS Phase I upgrade ATLAS & CMS major upgrade Phase II LHCb detector consolidation & improvement 2
3 ALICE & LHCb upgrades ECFA High Luminosity LHC Experiments Workshop
4 ALICE, LS2 upgrade scope Motivation: Focus on high-precision measurements of rare probes at low p T Cannot be selected by hardware trigger Need to record large sample of events Goal: Pb-Pb recorded luminosity 10 nb -1, (plus pp and p-pb data) 8 x events to gain a factor 100 in statistics over the Run1+Run2 programme Strategy: Read out all Pb-Pb interactions at a maximum rate of 50kHz (i.e. L = 6x10 27 cm -1 s -1 ) upon a minimum bias trigger Perform online data reduction based on reconstruction of clusters and tracks Improve vertexing and tracking at low p T New Inner Tracking System (ITS) ECFA High Luminosity LHC Experiments Workshop
5 ALICE, LS2 upgrade scope New Inner Tracking System (ITS) improved pointing precision less material thinnest tracker at the LHC Time Projection Chamber (TPC) new GEM technology for readout chambers continuous readout faster readout electronics Muon Forward Tracker (MFT) new Si tracker Improved MUON pointing precision MUON Arm continuous readout electronics New Online/Offline computing farm (O2) new architecture on line tracking & data compression 50kHz PbPb event rate TOF, TRD Faster readout New Trigger Detectors (FIT) 5
6 The ALICE Upgrade, 5 TDRs Silicon Inner Tracking System (ITS) upgrade Time Projection Chamber (TPC) readout chamber upgrade Muon Forward Tracker (MFT) Upgraded readout for all detectors to cope with the higher rate (SAMPA, CRU) Upgraded Central Trigger Processor Upgraded Fast Interaction Trigger (FIT) based on Quartz+MCP & Scintillator New Radiation requirements Upgraded Online-Offline (O2) system to handle the continuous readout at 50kHz PbPb collisions and reconstruction ECFA High Luminosity LHC Experiments Workshop
7 The way to LS2 Preparation LS2 LS2 preparations since end LS1 LS2 duration: 102 working weeks (2 weeks in Dec 2018 and 2x50 weeks in ) ECFA High Luminosity LHC Experiments Workshop
8 LS2 preparation ECFA High Luminosity LHC Experiments Workshop
9 New central beampipe 1/2 OD 38 mm ID 36.4 mm Outer diameter Present beampipe 60mm LS2 beampipe 38mm (only central part) Wall thickness 800um 800um Length 482cm 550cm Beryllium length 395cm 88.8cm Bellows/flanges SS Al Nb. of supports 3 3 New ALICE beampipe geometry officially approved in September 2014 LMC ECFA High Luminosity LHC Experiments Workshop
10 New central beampipe 2/2 18 months > one year contingency Order Delivery to VSC Delivery to ALICE Installation in ALICE Engineering design completed (now under approval) ECFA High Luminosity LHC Experiments Workshop
11 New O2 data centre at P2 (CR0) If no data centre in Prevessin EL and CV infrastructure EMD4/18kV CR0 ready MDC delivery Noise simulation done and put as requirement in ITT Cellule 2MVA transformer Red: HT Blue: BT MDC MDC CR0 location at P2 EL infrastructure Example of MDC ECFA High Luminosity LHC Experiments Workshop
12 Optical fibers 1/ links, 145 trunk cables Architecture and technology selected: trunk cables 144F & MPO CERN offer received in May (EN-EL), other suppliers contacted Synergy with LHCb Cavern CR1 DET. MPO-LC Patch-cord 4U Patch Panel MPO-MPO Trunk cable mt MPO-MPO 4U Patch Panel MPO-MPO MPO-MPO Patch-cord CRU ECFA High Luminosity LHC Experiments Workshop
13 Optical fibers 2/2 Purchase fibers Installation and test of fibers CR1-UX TPC re-installation Cable-trays CR1-UX + validate prototype Installation of fibers CR1 to SXL2 cleanroom and CR0-CR1 ECFA High Luminosity LHC Experiments Workshop
14 Cleanrooms ITS cleanroom (B.167) June 17 : TPC cleanroom (ISO7) B C D Zone A (Assembly hall) Zone B (Insertion Test) Zone C (Counting Room& Cooling Plant) Zone D (Control Room) A ECFA High Luminosity LHC Experiments Workshop
15 LS2 schedule ECFA High Luminosity LHC Experiments Workshop
16 LS2 schedule Dec-Feb (10 weeks) Open Experiment + TPC/ITS/beampipe deinstallation Mar-Dec (40 weeks) TPC upgrade Sep-Dec (15 weeks) Recommissioning Dec-Aug (37 weeks) Reinstall TPC/ITS/MFT/FIT/beampi pe + close Experiment One shift/day Long days foreseen for transport tasks 24h/24 for few specific tasks (e.g. TPC RO tests) ECFA High Luminosity LHC Experiments Workshop
17 1 Open Experiment + TPC/ITS/beampipe de-installation Open cavern, L3 doors, comp.magnet/miniframe Duration 3.5 Remove ITS & beampipe 5.5 Bring TPC to cleanroom 1 Total: 10 weeks Miniframe ITS TPC Key resources: transport, P2 technicians, ITS and TPC groups ECFA High Luminosity LHC Experiments Workshop
18 2 TPC upgrade Duration Remove electronics and services 5 Swap chambers 8 Survey and align chambers and end plates 3 Sealing, T sensor installation and leak test 4 Reinstall electronics 8 Readout test 7 Close sectors 1 Contingency 4 Total: 40 weeks MWPC installation (photo 2006) Yellow platform and installation jig ISO5 tent ECFA High Luminosity LHC Experiments Workshop
19 3 Reinstall TPC/ITS/MFT/FIT/beampipe + close Experiment ITS Duration Reinstall TPC 3 Install ITS cage and new beampipe (incl.bakeout) Reinstall miniframe 2 Install & commissioning MFT/FIT/ITS 18 MFT/FIT/ITS commissioning, close L3 doors and cavern 6 8 Total: 37 weeks MFT Resources: Survey and transport P2 technicians TE-VSC (beampipe) ECFA High Luminosity LHC Experiments Workshop
20 Other activities: detectors In parallel to TPC upgrade Uninstall all 4 PHOS modules (fix FEE/TRU cards) Install 2 CPV modules These interventions imply to de-install also the 3 A-side DCal modules DCal CPV installation (LS1) CPV PHOS ECFA High Luminosity LHC Experiments Workshop
21 Other activities: services In parallel to TPC upgrade Miniframe modification (PP0 and PP1) TPC/ITS/MFT/FIT cables Remove all cables from C-side (absorber area) New ITS/MFT water cooling plants (incl. new lines) New ITS ventilation duct Optical fibers Miniframe Key resources: Dedicated FSU team coordinated by ALICE TC Outside companies (e.g. new inox pipes) CERN cabling and scaffolding contracts (EL, EA) CERN EN-CV and EN-EL PP0 PP1 ECFA High Luminosity LHC Experiments Workshop
22 Detailed LS2 schedule ECFA High Luminosity LHC Experiments Workshop
23 Conclusions Well on track with LS2 preparations, as we started since end of LS1 New beampipe will be ordered before end of the year. More than one year contingency before installation in ALICE Fibers will be installed in 2019, cable-trays in place already during upcoming EYETS LS2 schedule: TPC upgrade and ITS installation must be done in sequence for obvious reasons Dedicated FSU team for services modifications. Lot of support needed from CERN service groups (transport, survey and safety coordination) and cabling (and scaffolding) contracts! Four months foreseen for global ALICE re-commissioning at the end of LS2 ECFA High Luminosity LHC Experiments Workshop
24 LHCb Upgrade parameters LHCb is a high precision experiment devoted to the search for new physics beyond the Standard Model by studying CP violation and rare decays Luminosity Run2 4 x cm -2 s -1 (2 x nominal) ->Upgrade: 2 x cm -2 s -1 (10 x nominal) (Triggerless) Read-out Run 2 1 MHz Upgrade 40 MHz Increasing the read out to 40 MHz and the higher luminosity necessitates replacing all front-end electronics and the majority of detector systems. To cope with the enormous increase of events to be evaluated, a larger CPU farm will be unavoidable. As space and cooling/power capacities are limited in the UX, a new Data Center at the surface is in planning. ECFA High Luminosity LHC Experiments Workshop
25 New detectors and r/o electronics New r/o electronics What stays in place? RICH1 Shielding RICH2 box, mirrors ECAL HCAL MUON (but NOT r/o electronics) 25
26 LS2 preparation ECFA High Luminosity LHC Experiments Workshop
27 Detector assembling facilities at P8 SX8 b SX8 SX8 SX8 b b b ECFA High Luminosity LHC Experiments Workshop
28 Data Centre (2MW) Optical links (15k) LS1: 1. Trays installed 2. Install 2x144 TEST fibres trunk cables FROM UX to SX 3. Validation of installation technique 1. Mini test data centre at surface 2. Test & validate DAQ chain Option: Data Centre at P8 or Prevessin ECFA High Luminosity LHC Experiments Workshop
29 Services CO2 transfer lines (VELO-UT cooling) Cooling plants, pipes, optical links, copper cables: specs, design, integration, procurement and installation ECFA High Luminosity LHC Experiments Workshop
30 LS2 schedule: 3 phase Dec19-Aug19 Open Experiment + Dismantling 1 Sept19-Jul20 Install detectors services Jul20 Nov20 close Experiment Survey Recommissioning 2 3 ECFA High Luminosity LHC Experiments Workshop
31 LS2 phase 1: Dismantling / Detectors Open detectors Dismantle beam pipe Dismantle detectors and services Extra constraints Working detector environment Radio Protection overhead Protection of personnel risk assessment prior to any destructive work Logistic waste sorting waste disposal ECFA High Luminosity LHC Experiments Workshop
32 LS2 phase 1: Dismantling / services ECFA High Luminosity LHC Experiments Workshop
33 LS2 phase 2: Detectors Installation R. Wallet Detector assembling in surface facilities (SciFi, UT, VELO) Tests & Survey Descent and installation in the pit R. Wallet ECFA High Luminosity LHC Experiments Workshop
34 LS2 phase 2: Detectors Installation Most critical path: strong correlations between UT RICH1 VELO BEAM PIPE Stringent constraints on installation sequence ECFA High Luminosity LHC Experiments Workshop
35 Phase 3 Closure & commissioning Final connection between detectors and services Beam Pipe installation and Bake-out (section 2-4) Closing LHCb detectors Final survey and alignment of detectors Commissioning Expected end date for Installation work: Nov 2020 ECFA High Luminosity LHC Experiments Workshop
36 Planning: simplified schedule ECFA High Luminosity LHC Experiments Workshop
37 Conclusion Tight schedule The current planning does not foresee any contingency Delays will be absorbed by shift work or week-ends The success relies on strong involvement of participating Institutes and CERN: EN Engineering dpt. Survey (detector assembly and positioning) EL (power, copper cables, optical links) CV (Detector and Data Center Cooling) Handling, Safety Coordination, EA support TE Technology dpt. Vacuum Chamber operation HSE Radioprotection Radioprotection ECFA High Luminosity LHC Experiments Workshop
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