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Mu2e WGM

Mu2e WGM. 10/20/2010 R. Ray Mu2e Project manager. Why does the building have to go in the middle of a road?. Some sites we have evaluated. Constraints. There are several factors that come into play when considering the location of Mu2e: Where can we connect to the Debuncher Ring?

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Mu2e WGM

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  1. Mu2e WGM 10/20/2010 R. Ray Mu2e Project manager

  2. Why does the building have to go in the middle of a road? R. Ray - Mu2e WGM

  3. Some sites we have evaluated R. Ray - Mu2e WGM

  4. Constraints There are several factors that come into play when considering the location of Mu2e: • Where can we connect to the Debuncher Ring? • Wetlands and Indian Creek. • Beam requirements for the AC Dipole R. Ray - Mu2e WGM

  5. 1st Location Evaluated This was the first location that we seriously evaluated. • To break out of the Debuncher at this location would require significant demolition to AP10, relocation of the D/A line and relocation/splicing of a large number of cables and busses. • Beamline must pass under Indian Creek, a state waterway. Wetlands surround the creek. • Significant shielding required between beamline and creek • Creek would have to be diverted during construction • Would surely push us from a CX to an EA R. Ray - Mu2e WGM

  6. Preferred Site – 4/09 R. Ray - Mu2e WGM

  7. Preferred Site 4/09 • This became our preferred site when we realized that the only place where we could easily extract beam from the pbar source was just North of AP30. • An existing beamline from the Booster connects to the pbar source at this location, so a stub allowing connection to the Debuncher already exists. • AD/PBAR experts who have walked the tunnel tell us that connecting anywhere else is extremely difficult and costly. • The tunnel is packed with equipment, cable trays, etc. • This put us in an existing parking lot with easy access to utilities and well away from Indian Creek. We were very happy with this location. R. Ray - Mu2e WGM

  8. Beamline Growth HOWEVER…. The beam requirements for the AC dipole have made it necessary to extend the length of the beamline. • The AC dipole is required to extinguish beam between pulses that causes background. • The AC dipole requires an adequate bend strength to extinguish the beam between pulses to the required level. • To build a magnet with adequate bend strength that we can power at high frequency (up to 5 MHz) pushes us toward a beam with large bx(betatron function in the bend plane), by ~ 0 and long weak magnets for the AC dipole. • We use bx = 250 m and L = 6 m • 4 times less stored energy than bx = 50 m and L = 2 m • The length of the Mu2e beamline has been extended to allow preparation of a beam with large bx. R. Ray - Mu2e WGM

  9. Longer Beamline • Our first pass at a longer beamline put us here. • Note the proximity to Indian Creek. • This is very advanced optics. Not a simple transfer line. • Also not a gold plated line. We don’t cancel the derivative of the dispersion at the target, something we would do if we had more space. R. Ray - Mu2e WGM

  10. Current Location • We were able to squeeze some space out of the upstream bends. Can’t gain anymore without reducing bx. • Reducing bx increases the cost and technical risk associated with the AC dipole. • The current location minimizes the cost and the project risk. Any other location will increase the cost. R. Ray - Mu2e WGM

  11. Precedent for diversion of Kautz Road Diversion of Kautz Road to accommodate new Antiproton source Original Kautz Road R. Ray - Mu2e WGM

  12. L2 Systems and Managers 1.1 Project Management R. Ray FNAL 1.2 Accelerator S. Werkema FNAL 1.3 Conventional Construction T. Lackowski FNAL 1.4 Solenoids M. Lamm FNAL 1.5 Muon Channel S. Feher FNAL 1.6 Tracker Mukherjee FNAL 1.7 Calorimeter Stefano Miscetti Frascati 1.8 Cosmic Ray Veto C. Dukes UVa. 1.9 Trigger and DAQ M. Bowden FNAL L2 Managers are now all in place. Many L3 managers also in place. R. Ray - Mu2e WGM

  13. Acquisition Strategy Passed back and forth a couple of times now. Now with Lisa Rodgers, FSO acquisition expert. • Based on experience with NOvA, we need to define the key performance parameters in a general enough way to guarantee that we meet them. • I’ve made a first pass • Some confusion about LEED requirements. • We originally thought that for a building like ours we were only required to comply with the LEED guiding principles. • We may now have to get the building LEED certified. Trying to understand this. R. Ray - Mu2e WGM

  14. Draft KPPs • Project completion (CD-4) will be accomplished when the scope defined in the WBS dictionary has been completed and the apparatus has been demonstrated to be functioning by achieving Key Performance Parameters (KPP) listed below. After achieving the Key Performance Parameters, the project manager will request acceptance and approval of CD-4. The Key Performance Parameters are those that demonstrate functionality of the system while achievement of beam parameters required for the experimental program will be obtained after routine tuning and operation of the accelerator complex. Key Performance Parameters for CD-4: • Accelerator complex capable of delivering 8 GeV protons to the Mu2e production target at the rate of 3.6 x 1020 per year. • Accelerator complex capable of achieving a beam extinction, defined as the ratio of protons between pulses to the number of protons contained in pulses, of 10-9 (not sure about this one). • Solenoid system has been demonstrated to run at full field strength. • Tracks from cosmic ray muons, triggered by the cosmic ray veto, have been reconstructed in the detector. • Recording of cosmic ray events in the detector by the data acquisition system. R. Ray - Mu2e WGM

  15. PEP Paul has a draft. Trying to make it consistent with new guidelines from Lehman… R. Ray - Mu2e WGM

  16. CDR Continued progress on general sections. R. Ray - Mu2e WGM

  17. CDR R. Ray - Mu2e WGM

  18. Accelerator • Proton pulse width (tail) is wider than the ideal case. • Ideal pulse would have an RMS of 20 ns or less. • The best we can do is ~ 40 ns. We can accommodate this by moving the live gate a bit and losing a small amount of sensitivity. • We can save a substantial amount of money (~$4M) by relaxing 40 ns to 45 ns. • Difference between 40 and 45 ns is not so great, so we will likely do this once we are sure we understand all of the issues. R. Ray - Mu2e WGM

  19. Accelerator • Production target • We are unable to get any mechanical engineering out of AD. • Talking to RAL high power target group about conceptual design for production target. Unfortunately, so is everybody else. • NUMI/MINOS, NOvA, LBNE • Scope of work – Final report date • Study of off-center beam pulse - Feb • Conceptual design of water cooling system – March • Conceptual design of Mechanical support – June • Conceptual design of remote handing equipment – July • Schedule • 1st design study report – Feb. • 2d design study report – May • Final report including all drawings and simulation files – Feb - July R. Ray - Mu2e WGM

  20. Accelerator • Heat Shield • Unable to get any mechanical engineering from anywhere in the lab for this job. • Design from MECO that can't be manufactured, and a design from a summer student that cannot hold its shape horizontally in Earth's gravity, with an unknown load path to the floor, and insufficient conductivity from piece to piece in a vacuum to get the energy deposited out.  And it's not clear how it could be installed in the magnet. • We are hiring Bartoszek Engineering to do a conceptual design. • Develop a conceptual design of the heat and radiation shield (absorber) for the Mu2e Production Solenoid including the time averaged power removal (cooling), static structural analysis, design for assembly and installation, interface with target support/replacement system and vacuum vessel, and cost/schedule estimate. R. Ray - Mu2e WGM

  21. Solenoid Progress • Working on magnet CDR. • Preparing for vendor visits. • Will probably hire a couple of vendors to do a cost estimate for us for CD-1. • Have to start this process soon! R. Ray - Mu2e WGM

  22. Conventional Construction • Good progress on requirements. • Mature draft of requirements document now available. • Meetings with stakeholders • Wetlands report from Patrick Engineering. R. Ray - Mu2e WGM

  23. Staffing • L2 Managers are doing a good job of identifying L3 managers. • For CD-1 I still need • Deputy • Increasing need. I can’t keep up with everything. • Project EE – Will be in place before pre-CD-1 Review • Mu2e, LBNE, CMS all need a Project EE and 3 highly qualified candidates have been identified. • Discussions held with all of the candidates. • Project Risk Manager • 25% of an FTE at this point. R. Ray - Mu2e WGM

  24. CD-1 Delayed from Nov. May delay until January. Time R. Ray - Mu2e WGM

  25. Schedule CD-1 CD-2/ 3a CD-3b R. Ray - Mu2e WGM

  26. Requirements R. Ray - Mu2e WGM

  27. Action Items • Project EE – Ron Ray • In place soon. • Complete set of requirements documents – Miller/Bernstein • Light at the end of the tunnel, but not there yet. • Start scheduling L2 design reviews • Detailed plan for accelerator reviews in place. Working on others. • Develop a plan for Directors Design Review and Pre-CD-1 Review • First pass discussions. Preparations underway for pre CD-1 Review. Director’s Design Review delayed until December of January. We are not ready. R. Ray - Mu2e WGM

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