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Task T: CMS Endcap Muon

Dick Loveless Common Projects Manager Endcap Muon Construction Project Manager 15 May 2007. Task T: CMS Endcap Muon. Overview. Goals for CMS when we joined (Nov ‘93) Design and build endcap iron yoke Design and build endcap muon system Integrate both systems into a coherent endcap

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Task T: CMS Endcap Muon

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  1. Dick Loveless Common Projects Manager Endcap Muon Construction Project Manager 15 May 2007 Task T: CMS Endcap Muon

  2. Overview • Goals for CMS when we joined (Nov ‘93) • Design and build endcap iron yoke • Design and build endcap muon system • Integrate both systems into a coherent endcap • Now (May ‘07 - 14 years later) the goals are achieved • Endcap iron yoke finished and magnet tested • Endcap muon chambers are completely installed • Production and installation of services and cabling ~100% complete • Commissioning of chambers ~96% finished

  3. Scope of Wisconsin Effort • Disk (700 tons) designed by Wisconsin & built by Kawasaki (Japan) • Mounting carts designed by Wisconsin & built by Hudong (China) • Nose (350 tons) mounting designed by Wisconsin & built at Dubna (Russia) • Chamber integration & services designed and implemented by Wisconsin • Lowering design for endcaps aided by Wisconsin

  4. Common Projects scope • Full design and construction (finished 2002): • 6 large steel disks (~4000 tons) - Kawasaki (Japan) • 6 support carts - Hudong (China) • Superbolts (1600) & hardware - Superbolt(USA) • Assembly at CERN - FCI(France) • On Schedule and on budget of ~$10M from US DOE. • Design (finished and installed 2003): • Walkways - (production in Great Britain) • Corner pieces - (production in Serbia) • EMU shielding - (production in Germany) • On schedule and on budget (funded by CMS) • Wisconsin people responsible: • Level 2 manager -- Dick Loveless • Lead engineer -- Farshid Feyzi

  5. More Wisconsin Scope! • US-CMS Common Projects • 1) endcap disks (6 disks ~3500 tons) UW design & mfg in Japan by UW • 2) endcap carts (6 carts to mount disks) UW design & mfg in China by UW • 3) large corner posts( ~50 w/hydraulics) UW design & mfg in Serbia by UW • 4) lowering design for endcap disks UW design • 5) superbolts (high strength M75) UW specification & procurement • CMS Experiment Endcap Muon system • 1) Chamber frame and mounting UW design & mfg at Wisc • 2) Chamber install (fixture + installation) UW design & mfg at Wisc • 3) EMU gas layout UW design & implementation • 4) EMU cooling system UW design & implementation • 5) EMU cabling network UW design & implementation • 6) alignment layout and design UW design • 7) low voltage system UW design & procurement • CMS Experiment Tracker system • 1) Test cage for TIF UW design, construction & installation • 2) Cable layout for TIF UW design, construction & installation • 3) PP1 interface box UW design, construction & installation • CMS Experiment Infrastructure • 1) Preshower cooling system UW design • 2) Endcap tower piping (gas & water) UW design • 3) Mini cable chain layout UW design & installation • 4) RPC integration UW design • ATLAS Experiment Muon system • 1) installation fixture UW design & mfg at Wisc Huge Effort: R. Loveless Lanaro Baek & 4-5 UW Engineers 3 UW Draftsmen 6-7 Mostly UW Techs

  6. Magnet Test Aug ‘06 • July ‘06 • CMS detector closed for the first time • All endcap chambers and services fit nicely • Success for UW 3D modeling! • “… no interference has been detected during the closing exercise, even where full cabling is present. This is to be credited to the good job done by the integration team, based at CERN under the leadership of Gerard Faber, the effort of PSL for the endcap integration under control of Farshid Feyzi, and all contributing persons.” from Alain Herve, CMS Technical Coordinator • Aug ‘06 • Magnet ramped to 4.0 tesla • Deflection of 14 m x 60 cm thick 700 ton steel disks = 15 mm as predicted by UW! • Endcap Muon chambers and trigger performed very well

  7. Endcap Muon System • Dick Loveless level 2 manager since July ‘02 • CSC construction is finished • 419 cathode strip chambers (106%) shipped to CERN for installation • CSC installation basically finished • 396 chambers installed (100%) • Services (gas, cooling, cabling, HV, LV) ~95% complete • UW responsible for all services except HV • Install final cooling manifold on 22-24 May • All parts of LV system delivered, installation ongoing • Commissioning of chambers ~96% finished • Need to remove ~4 chambers to replace electronics

  8. Endcap Muon Personnel • Physicists (base program support): • Dick Loveless (EMU level 2 manager) • Armando Lanaro (level 3 manager for installation) • Yongwook Baek (cabling manager, installation) • A. Lanaro & Y. Baek based at CERN; responsible for day-to-day work on integration and installation • Engineers(project support): • Farshid Feyzi, Dan Wenman (Physical Sciences Lab) • Techs(project support -- PSL* & extra hires): • Bart Dana*, Jay Johnson*, Dave Northacker, Ron Smith*, Tim Sailor, Leonid Shchipounov

  9. Installing 1st chamber Chamber installation is a Wisconsin responsibility Armando Lanaro & Dan Wenman installing the 1st chamber using the Wisconsin- designed fixture (we sold a copy to Atlas for their muon installation)

  10. Typical chamber installation We installed more than 6 CSCs per day (9 on the best day!) Wisconsin is responsible for all Endcap integration and installation -- A. Lanaro leads the installation crew, assisted by Y. Baek Also responsible post-installation

  11. Final CSCs installed

  12. Lowering YE+2 Disk

  13. Skew-clear cables Y. Baek and D. Northacker installing skew-clear cables (13per chamber) Wisconsin is responsible for all cabling installation --Y. Baek is leading the cabling work with help from Russian and Chinese techs

  14. Recent Reviews • LHCC (Jan ‘06) • “The CSC installation and commissioning has proceeded on schedule. Excellent performance has been achieved through DAQ to the event builder. Problems with grounding and cooling manifolds have been solved. Looking ahead, no schedule problems for the CSC’s are foreseen.” • CMS Annual Review (Jun ‘06) • “Once again the reviewers want to congratulate the whole team for an overall very good state.” • MEG Review (Feb ‘07) • “The CMS Endcap Muon (EMU) group should be congratulated for completing the construction phase of the project. This was a superby run construction project.”

  15. UW ongoing EMU tasks • Endcap Integration & Services: layout and connection to CERN, lowering of disks to underground cavern -- still have 3 disks to go down (likely October or … very tight schedule) (Loveless, Feyzi, Wenman) • Endcap Chamber Installation:100% chambers installed, need to remove at least 4 chambers for maintenance (Lanaro, Wenman) • Endcap Infrastructure:tower piping, mini-cable chains (not originally an EMU responsibility), installation of piping and cabling in towers & mini-cable chains (after lowering!) (Loveless, Wenman, Lanaro, Baek) • Confidence about above activities due to experience with + endcap • Correction implementation glitches: once data appears we need to resolve “strange” results due to mechanical, electrical or alignment errors (Loveless, Lanaro, Carlsmith, Bellinger) Wisconsin has MAJOR responsibility for all these tasks:

  16. Tracker Integration • In June ‘05 CMS management asked Dick Loveless to provide Tracker engineering support • Goal of Tracker Integration Facility (TIF) is to integrate Tracker and test 25% of the channels • Develop plans for modifying Bldg 186 for TIF • Add 27 x 18 m2 Clean Room to Bldg 186 • Install ~1000 cables to test 25% of Tracker • Build and install necessary infrastructure • By August ‘06 TIF infrastructure was delivered and mostly installed

  17. Outside Clean Room ISO view of cable wall assembly

  18. TIF structures complete

  19. More Tracker engineering • PP1 Interface Box (32) • Connection point for ALL pipes, cables, optical fibers for Tracker & Pixels (multi-level highway interchange) • Mounts on the inside of the vacuum cyrostat • Wisconsin doing the design, mfg. & installation power cables Cooling pipes (-35 C) Optical fibers

  20. PP1 prototype • cooling pipes for C6F14 (-35 C) • power cables & PCB connection boards

  21. PP1s installed • Contain all cable/pipe connections for Tracker and Pixels (LV, optical fibers, cooling pipes, thermal shield, etc.) • 29 (out of 32) PP1s delivered to CERN April ‘07 • 22 PP1s installed on inside of vac tank April ‘07 • UW producing strain relief brackets and combs

  22. New Integration Effort • Beam Pipe Integration (UW Engrs. F. Feyzi, A. White) • Funded by CMS (not USCMS) • Must be done by end of this year • Design opening procedure (w/o removing pipe) • Beam Pipe supports • Radiation shielding (including installation plans) • Maintenance plans (access, tools, etc.) • Improve methods of moving disks • Disks move vertically 3-6 cm when air pads activated • Will cause problems when beam pipe installed • Develop better guidance techniques • Visibility almost non-existent • Already suffered damage during disk moving • High degree of difficulty!

  23. Next steps…. • Physics at last -- R. Loveless & A. Lanaro • Detector Physics Group (DPG) -- Muons • Working to understand the data • Correlate “strange” data to EMU hardware • Improve alignment • Impact of detector problems • Physics Objects Group (POG) • Finding new physics using multi-muon events • Validate muon identification using detector expertise • Study muon signals & backgrounds • Commissioning & Maintenance • Major activity in the commissioning group • During downtimes we’ll be very busy fixing problems • Since we did the integration, we should find problems fast • We have to do all the chamber manipulations

  24. Summary • Endcap Muon construction has been successful • Chamber installation and commissioning basically complete • Services (gas, water, cabling) ~98% complete • Reviews (DOE/NSF, LHCC, CMS) very positive • Tracker effort nearly finished • Wisconsin team is essential for installation and integration efforts in the coming years • Heavy schedule of work to finish tower piping on both endcaps and complete all hookups to counting room • Still need to lower 3 disks, reassemble cooling manifolds, install and fill the mini-cable chains with flexible pipes & cables • Armando Lanaro is essential at SX5 • Beam pipe integration crucial task for CMS maintenance • Get ready for physics with muons!

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