1 / 29

D. Missiaen

Survey Activities and organisation during lS1 P. Bestman T. Dobers M. Jones/J.F. FUCHS D. MISSIAEN. D. Missiaen. Agenda. Works proposed by SU and agreed with SU LHC Complex SPS Complex PS Works requested to SU Alignment after installation/replacement Experiments

lindsay
Télécharger la présentation

D. Missiaen

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Survey Activities and organisation during lS1P. BestmanT. DobersM. Jones/J.F. FUCHSD. MISSIAEN D. Missiaen

  2. Agenda • Works proposed by SU and agreedwith SU • LHC • ComplexSPS • ComplexPS • Works requested to SU • Alignmentafterinstallation/replacement • Experiments • Time estimate • Manpower • Issues LS1 day, 12 June 2012

  3. LHC • « Quick Vertical » Survey of the LHC • To determine an absolute vertical position of the quadrupoles and the deepreferences • As soon as possible whenthereis an access in LHC • Preferably the magnetsbeing all at the sametemperature • 2 months/1team • If not done or postponed • Will extendthe work of smoothingat cold (next item) LS1 day, 12 June 2012

  4. LHC • Survey and realignment of cold components of the whole LHC • To smooth the relative position of the cryomagnets • In Vertical, tilt for the wholesector • In H for the Arcs and DS • at cold temperature < 100K • 1 month/1team/sector in H – the same in V • The work has to bedone in one month (Katy) => 2 teams • Couldbe a bottle neck if severalsectors are commissionedat the same time LS1 day, 12 June 2012

  5. LHC • If not done or postponed • Someunstable areas (ex sector 78, LSS6R) • Degradation of the alignment • In V of 0.05 mm r.m.s over 1 year (fromstatisticsof all sectors) • In H of0.12 mm r.m.s over 1year (statistics on twosectorsonly) • They have not been measuredsince 2008 (if not done in LS1 itwillbe in 2018) • In 2018 : 0.12*sqrt(10) = 0.37 rms • 1 magnet over 100 couldbeat > 1.2mm LS1 day, 12 June 2012

  6. LHC • Survey and realignment of all components in the LSS • goal • To smooth the junctionbetween the DS and the LSS • To ensure a betterlinkbetweenbothsides of the IPs • To realign all «intermediate» components • In tilt and H • constraints • Couldbeat warm temperature • Asap (Fromjanuary-february 2013) • 1 month/1 team/LSS • Duct to beusedagainst air current • If not done or postponed • badconnectionof the magnets of Arcs and DS and LSS • More difficult for operation LS1 day, 12 June 2012

  7. LHC • Maintenance of lowbeta quadrupoles monitoring • Goal • Installation of loadsensors in PT8 • Installation of devices in order to check remotely the good functioning of permanent monitoring systems (HLS, WPS sensors) • If not done or postponed • Risk of major uncontrolled movement of a low beta quad during realignment (it was the case in 2011 on IR5R) • frequent intervention in tunnel in a future radioactive area LS1 day, 12 June 2012

  8. LHC • Maintenance of alertsystems in the interconnects • Goal • Detectremotely a movement in an interconnect • If not done • Latediscovery on an offset in an interconnect • Design and Mechanicsnot readyyet • Cablesordered LS1 day, 12 June 2012

  9. SPS ring • Vertical Survey of the quads (regularyearlyactivity not doneat the last TS) • Goal • Smooth the position of the quads • Correct the hole of sextant 5 and 6 (approvedby IEFC) • If not done or postponed • More difficult for OPeration • Constraints • TT60 has to becorrected as well • Time estimate • 1.5 month/1 team • Extra workestimated to 2 monthsfor sextant 5 and 6 LS1 day, 12 June 2012

  10. SPS ring • Horizontal surveyof the quads (it has not been donesince 2005) • 2 months/1 team • Realignment of dipoles and intermediate components to bedonealso (T+V+H) • 5 months/1 team • If not done or postponed • Degradation of the alignment LS1 day, 12 June 2012

  11. TI2 • Tilt and Vertical surveyand realignment of quads • To improve the alignment in thisveryunstable area • 50% of quads realignedduring last winter TS • Realign the TT60 : 1month/1team • Quads in V and T : 1.5 month/1 team • If not done or postponed • Degradation of alignment • More difficult to injectinto LHC LS1 day, 12 June 2012

  12. TI2 • Horizontal survey and realignment of the quads • Improve relative position of quads • 1 month/1team • Hope mvtwillbesosmallthat the others components will not have to berealigned • If not done or postponed • Degradation(quads have not been measuredsince the first alignment/smoothing in 2006-2007) • More difficult to injectintoLHC LS1 day, 12 June 2012

  13. TI8 • Tilt, Vertical and H survey and realignment of all components • Goal : To improve the alignment in thisveryunstable area • A tilt and vertical surveyisdoneateachwinterTS • Last year 80% of the quads wererealigned in T and V • This year H measurementsweredoneat the bottom of the line > displacements of 2 mm found • Estimated time : 5 months/1 team • If not done or postponed • Important Degradationof alignment • More difficult to injectinto LHC LS1 day, 12 June 2012

  14. SPS transferlines • Survey and realignment of the quads of TT10 • T+V+R surveydone in 2007-2008 > significantimprovement of the beam • Proposal for LS1 : Redo the sameoperation • 3 months/1 team • Survey and realignment of the quads of TT20 • Survey in T + V for some quads done in 2008-2009 • Proposal for LS1 : full survey of all the components but with a lowpriority • 3 months/1team LS1 day, 12 June 2012

  15. PS Ring • V, tilt and H Survey and realignment of main magnets • smooththe position of the magnets • Requestfrom ABP and OP • 2.5 months/1 team • If not done or postponed • Degradationof the alignment (Last Survey of main magnets in T, V and H in 2005) LS1 day, 12 June 2012

  16. PS Booster • V, tilt and H survey and realignmentof quads and dipoles • Goal : smooth position of magnetsespecially for the connection to Linac4 • requestedby OP • 2 months / 1team • If not done or postponed • Degradation of the alignment(Last Survey in T, V and H in 2008) LS1 day, 12 June 2012

  17. PS transferlines • V, tilt and H survey and realignment of quads of TT2/FT16 • 1 month/1 team • V, tilt and H survey and realignment of all components of BTM, BTY, BT, BI and FTA • 4 months/1 team LS1 day, 12 June 2012

  18. Linac4 • Fiducialisation of components and alignment • Becauseof a strongdelayfiducialisation and alignmentwilltake place during LS1 whichwas not foreseeninitially. It is not optimum for SU • Fiducialisation : 8 months /1 team • Alignment : 8 months /1 team • If not done or postponed • no alignment, no vacuum connection, no commissioning possible LS1 day, 12 June 2012

  19. Workrequested by others • Accelerators • The availability of the PLAN tooltriggered a lot of requestswhichwere not known up to the beginning of last week !!!! • LHC : 1.2 FTE • SPS : 0.25 FTE • PS : 0.3 FTE • Wedon’t know whatelseisgoing to arrive LS1 day, 12 June 2012

  20. Workrequested by others • LHC experiments – approvedprojects • ATLAS • Metrology (Full opening and closing (ECT/Small Wheels/EBA/EBC/ECA/ECC/EB/Big Wheels)Finish the installation of the EE muon chambers, Additional chambers in the feet and elevators region, Survey Outer Barrel Muon Chambers, New Beam Pipes, Integrate IBL, TAS at start and end of LS1 • Stability of networks (Floor Stability at start and end of LS) • CMS • Metrology (Full Opening of CMS Endcaps (All Yes) and Barrel Wheels (All YBs), MABs survey, Yoke Endcap disk 4 construction at +z and –z ends in situ, Be beam pipe --> remove 59.6 mm install 45 mm, Bulkhead Scan3D, Full Closing of CMS Endcaps (All Yes) and Barrel Wheels (All YBs), HF, Beam pipes parts Z+/Z- adjustments, TAS re-alignment and control • Stability of networks (Cavern Stability at start and end of LS1) LS1 day, 12 June 2012

  21. Workrequested by others • LHC experiments – approvedprojects • ALICE • Metrology (Control Beam-Pipes, Add TRD module, Remove PHOS and rails, Install DCAL rails, Install DCAL, Install PHOS) • Stability of Networks • LHCb • Metrology (Exchange of the beam pipe UX85/3, Opening of all sub detectors and the muon filter, Remove beam pipe sectionUX85/2-4, Exchange of beam pipe support structures around UX85/2, Consolidation work on the magnet, Regular maintenance work on all services and sub systems, Opening of the shielding wall, Maintenance of RICH1 GE + Shielding monitoring system, Installation of Beam Pipe IT Monitoring System) • Stability of Networks LS1 day, 12 June 2012

  22. Workrequested by others • 20 Targets for TDC2 to prepare and fiducialise on the surface essentiallybeginning2013 • Non-LHC Experiments areas • Isolde/AD areas/PS areas • SPS areas H2-H8/Na62 • CAST • 20 months/1 team LS1 day, 12 June 2012

  23. Manpower/Planning • Most of the fieldworkisdone by a Manpower contractunder the supervision of CERN staff • Contract people canbeincreasedrathereasily • Preparation , Supervision, Coordination, data post processing, qualitychecks are done by CERN staff/fellows • This type of personelcannotbeincreasedsoeasily • SU wouldlike to do the major part of the injectorworks in 2013 because of heavyworkload in LHC from sept 2013 to mid 2014 LS1 day, 12 June 2012

  24. Time estimation • ~39 months over 18 months • 2 teams permanently LS1 day, 12 June 2012

  25. Time estimation • Total of 26.5 months over 14 months • ~2 teams permanently LS1 day, 12 June 2012

  26. Time estimate • Total of 12.75 monthsover 14 months~1 team • 16 months for L4 ~ 1 team LS1 day, 12 June 2012

  27. Manpower LS1 day, 12 June 2012

  28. If L4 delayed by one year • Advantages • 1.4 staff available for otheractivities • willsavea team of 2 people (fromcontract) as theywillbe on site in 2014-2015 in any case • Evenbetter if no installation beforemid 2014 LS1 day, 12 June 2012

  29. Issues • LHC smoothing in case we have to do severalsectors in parallel • PS and TI8 activitieswill have to bedoneat the same time (end of 2013) • Missing one staff for supervision of SPS-PS-L4 • Missing staff for Exp-LHC (CMS) • 17 personsfrom the contractpresent on site => office spaceproblem • Budgets : 1 C201 + 1FSU + 200k missingin APT • A veryhugeshut down … ambitious but stillfeasible !!! LS1 day, 12 June 2012

More Related