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Survey Activities for injectors during lS1 P. Bestman T. Dobers M. Jones/J.F. FUCHS

This survey outlines preventive maintenance and alignment operations for CERN's injectors during LS1P, focusing on SPS, PS, PSB, and transfer lines. It covers realignment plans for various components and the proposed timeline for these critical tasks.

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Survey Activities for injectors during lS1 P. Bestman T. Dobers M. Jones/J.F. FUCHS

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  1. Survey Activities for injectorsduring lS1P. BestmanT. DobersM. Jones/J.F. FUCHS D. Missiaen

  2. Agenda Complexe SPS SPS, TI2, TI8, TT41, TT10, TT20, North area Complexe PS PSR, PSB, transferlines L4 IEFC, March 7-9 2012

  3. Preliminaries • Workpresentedconcernsessentiallypreventivemaintenance/operationof alignmentproposedeither by : • SU wheninstabilities are wellknown • By OP or ABP for machine improvement • It doesn’tinclude the alignmentrequested for installation of new components whichis not knownyet • Terminology • T (tilt) meansTransversal inclination (roll angle) of magnet • V means vertical survey • H meansperpendicular/tranversal to the beam direction IEFC, March 7-9 2012

  4. SPS ring • Vertical Survey of the quads (regularyearlyactivity not doneat the last TS) • 20% of quads realignedeach time IEFC, March 7-9 2012

  5. SPS ring • SPS in Vertical • realignment of the « hole » in sextant 5 and 6 • From the passage of the LHC tunnel below SPS • Has been realignedseveral times • Requestfrom the OP team • Problems/consequences • Beginning of the TT60/TI2 line that has to becorrectedaccordingly • Many services concerned (VSC, transport, magnet, etc…) • Extra workestimated to 2 months for SU only IEFC, March 7-9 2012

  6. SPS ring • in Horizontal • Survey of the quads (it has not been donesince 2005) • Realignment of dipoles and intermediate components to bedonealso IEFC, March 7-9 2012

  7. TI2 • Tilt and Vertical of quads done in TS 2011-2012 • 50% of quads realigned > becoming an unstable area • Proposal for LS1 • Quads in V and T : 1.5 month • Realign the TT60 if SPS isrealigned IEFC, March 7-9 2012

  8. TI2 • V survey IEFC, March 7-9 2012

  9. TI2 • in H • Quads have not been measuredsince the first alignment/smoothing in 2006-2007 • Proposal for LS1 • Remeasure and realign quads • Hope mvtwillbesmall and that the others components will not have to berealigned IEFC, March 7-9 2012

  10. TI8 • in Vertical IEFC, March 7-9 2012

  11. TI8 • TI8 is a veryunstable area • A tilt and vertical surveyisdoneateachwinter TS • 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 • Proposal • a full survey in T, V and H of all components not only quads • Estimated time : 5 months IEFC, March 7-9 2012

  12. CNGS • TT41 is a also an unstable area • V and T surveydone for some portions in 2010 and 2011 upon OP request > misalignments of 2mm found and corrected • H surveydone on five halfcells in 2012 misalignments of 2mm found and corrected • Proposal for LS1 : Nothing up to now IEFC, March 7-9 2012

  13. SPS transferlines • TT10 • T+V+R surveydone in 2007-2008 > significantimprovement of the beam • Proposal for LS1 : Redo the sameoperation • 3 months • 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 IEFC, March 7-9 2012

  14. PS Ring • Last Survey of main magnets in T, V and H in 2005 • Proposal for LS1 : as requested by ABP and OP to redo full survey IEFC, March 7-9 2012

  15. PS Booster • Last Survey in T, V and H in 2008 • Proposal for LS1 : as requested by OP, measurement and realignment of quads and dipoles IEFC, March 7-9 2012

  16. PS transferlines • TT2/FT16 • Survey in T, V and H of the quads • BTM, BTY, BT, BI and FTA • Survey and alignment of all components • BI willbedone in the frame of the LIU project IEFC, March 7-9 2012

  17. Linac4 • Linac4 : • Important delay • For manufacturing of components • For installation : supporting jacks will not betherebeforeseptember • Fiducialisation and alignmentwill place in 2013 and 2014 whichwas not expected • Fiducialisation • Alignment IEFC, March 7-9 2012

  18. Other areas • 20 Targets for TDC2 to prepare and fiducialise on the surface • Non-LHC Experiments areas • Isolde/AD areas/PS areas • SPS areas H2-H8/Na62 • CAST • 20 months/ 1 team IEFC, March 7-9 2012

  19. 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 • SU wouldlike to do the major part of the injectorworks in 2013 because of heavyworkload in LHC from sept 2013 to mid 2014 IEFC, March 7-9 2012

  20. Time estimation • Total of 24 months • Manpower : 4 FTE over 15 months/supervision by staff willbe a bit difficult IEFC, March 7-9 2012

  21. Time estimate • Total of 9.5 months for CPS • For L4 the problemwillbe the supervision of the contract team • 1 person to beallocatedat 100% duringthisperiod IEFC, March 7-9 2012

  22. Conclusions • Hugeamount of work to bedoneduring LS1 • It shouldbe possible to include all the activitieswith the 15months of shut-down from the planning point of view • Decision has to betaken on the realignment of sext5-6 of SPS • L4 delay of component readynessis not favorable at all for SU • 1 personmissing to supervise the contract team for L4 because of heavyworkload • The survey of the injectorsisonly a piece of the puzzle for LS1 IEFC, March 7-9 2012

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