1. SiD MDI Issues Tom Markiewicz/SLAC Beijing ACFA/GDE Meeting 05 February 2007

2. 2007.02.06 Beijing ACFA/GDE SiD MDI 2 of 22 Issues : No Definite Solutions Surface Assembly and Underground Halls Space and Crane Requirements Detector Access Model in Push-Pull Scheme QD0 cryostat and support Anti-Solenoid Liquid Helium Supply “R20” detector package- Support and Alignment Model Beampipe and VXD Forward Tracker Lumical, Beamcal & Masks Not Covered Today Detector Shielding Model DID &Solenoid Field Calibration Scheme in Push-Pull Background Simulations

3. 2007.02.06 Beijing ACFA/GDE SiD MDI 3 of 22 SiD Assembly Movie

4. 2007.02.06 Beijing ACFA/GDE SiD MDI 4 of 22 Sequence of Operations Detector subassembly construction & surface tests –Octants of muon chamber instrumented barrel yoke, barrel Hcal, barrel Ecal –Four sub-modules of EC return flux instrumented with muon chambers, donut Hcal, Ecal –Tracker, vertex and FCAL packages Surface Magnet test –Assemble barrel support and the bottom 5/8 flux return octants –Drop in coil & cover with remaining 3/8 octants –Assemble two door legs and 4 360° (180 °?) plates of flux return –Test magnet and disassemble Lower detector –Reassemble lower barrel with supports below ground –Load barrel HCAL and ECAL modules into coil cryostat via threaded beam –Lower loaded coil package and capture with upper barrel yoke segments –Depending on crane capacity Lower fully assembled door Lower door pieces, the last plate with the Endcap Ecal & Hcal, and reassemble Tracker, VXD and FCAL installed below ground at last minute

5. 2007.02.06 Beijing ACFA/GDE SiD MDI 5 of 22 A Surface Assembly Scenario for SiD M. Breidenbach -1 August 2006 M-TonsStainless HCAL RadiatorTungten HCAL Radiator BarrelEndcap x2BarrelEndcap x2 EM Cal59195919 HCAL3543336746 Coil160116 Iron2966/8= 374.5 2130/4= 532.5 1785/8= 223.125 1284 Support x 2 (each ~5%Fe) 1501109065 Total to Lower Loaded Coil=573 Assembled Door=2402 Loaded Coil=542 Assembled Door=1479 Shaft Diameter(m) 8.3m10.4+2.0m

6. 2007.02.06 Beijing ACFA/GDE SiD MDI 6 of 22 Pre-Push Pull, 20mrad crossing angle, L*=3.5m Final Doublet Support and Access Plan One cryostat with radial step support tube with corresponding step Cryostat step @ z=4.8m: door can open 2m; radii from BNL Tube cantilevered from removable base just behind closed end cap door Full coverage endcap Ecal/Hcal @ r>20cm Forward instrumented steel return flux cut back ~10cm to clear step in cryostat when door open Antisolenoid cryostat begins at r=30cm ThetaOD1OD2 14 mrad290mm477mm 20mrad305mm512mm

7. 2007.02.06 Beijing ACFA/GDE SiD MDI 7 of 22 2006-05-07 BNL Discussion 305 mm OD Cryostat 512 mm OD Cryostat 70mm x 1.7m AntiSolenoid Cryostat 60cm OD Support Tube 38cm OD Support Tube Space to Open Door

8. 2007.02.06 Beijing ACFA/GDE SiD MDI 8 of 22 SiD Final Doublet Support and Access Plan with Push Pull @ 14mrad Crossing angle, L*=3.51m Three concepts –Drop idea of cantilevered support tube QD cryostat and FCAL package supported off rails in endcap doors Rails incorporate telescoping “rail extensions” to support cryostat and FCAL when door is open –Permanent liquid He feed line from barrel to QD0 with loop large enough to allow 3m door opening –5cm (?) radial cutback in endcap door iron to allow it to pass over QF1 cryostat with antisolenoid cryostat beginning at r=30cm

9. 2007.02.06 Beijing ACFA/GDE SiD MDI 9 of 22 Plan & Elevation View of FCAL/QD0 Support Door QD0

10. 2007.02.06 Beijing ACFA/GDE SiD MDI 10 of 22 FCAL/QD0 Supported with Door Open FCAL QD0 DoorRail Extensions

11. 2007.02.06 Beijing ACFA/GDE SiD MDI 11 of 22 Cross Section of QD0 Cryostat at z=3.5m

12. 2007.02.06 Beijing ACFA/GDE SiD MDI 12 of 22 SiD r<50cm, L*=3.5, 14mrad Crossing Angle, Push-Pull, Door Closed 328 mm OD Cryostat 477 mm OD Cryostat 70mm x 1.7m AntiSolenoid Cryostat Support Rails Space to Open Door 10cm Cold- Warm Xtns 30cm needed?

13. 2007.02.06 Beijing ACFA/GDE SiD MDI 13 of 22 SiD r<50cm, L*=3.5, 14mrad Crossing Angle, Push-Pull, Door Open Liquid He Line Inconsistency between support rail & cutout

14. 2007.02.06 Beijing ACFA/GDE SiD MDI 14 of 22 Door Closed, Permanent QD0 Liquid He Line Liquid He Line

15. 2007.02.06 Beijing ACFA/GDE SiD MDI 15 of 22 Door Open, Permanent QD0 Liquid He Line Liquid He Line

16. 2007.02.06 Beijing ACFA/GDE SiD MDI 16 of 22 R20 Tracking, Beam Pipe and FCAL Details Need Consistency Check In my personal view handshake between Tracker people, VXD people, FCAL people, Recon people, Management people and MDI people not made yet VXD cryostat now a CF support tube hanging from Beam Pipe and in turn supporting VXD Barrel and 7 endcap layers –Who supports beampipe? FCAL interplay with Forward tracking and Beampipe not globally resolved Interference between forward tracker & FCal during VXD access No conceptual solutions yet for Flanges, Bellows, Alignment, Cable and Cold Gas Access All Good Topics for SiD April 9-11 Collab Mtg @ Fermilab

17. 2007.02.06 Beijing ACFA/GDE SiD MDI 17 of 22 SiD R20 As per SiD Detector Outline Document

18. 2007.02.06 Beijing ACFA/GDE SiD MDI 18 of 22 R-Z View of the Pixel VXD

19. 2007.02.06 Beijing ACFA/GDE SiD MDI 19 of 22 12mm Beam Pipe and VXD Detail

20. 2007.02.06 Beijing ACFA/GDE SiD MDI 20 of 22 SiD Open for Access to the VXD Region

21. 2007.02.06 Beijing ACFA/GDE SiD MDI 21 of 22 VXD and Support Structures

22. 2007.02.06 Beijing ACFA/GDE SiD MDI 22 of 22 Elevation & Plan Views of Far- Lumi/BeamCal