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SiD IR Layout M. Breidenbach, P. Burrows, T. Markiewicz

SiD IR Layout M. Breidenbach, P. Burrows, T. Markiewicz. SiD Collaboration Meeting 16-17 December 2005 Fermilab. 2005.10.11 Discussion. SiD Dimensions from 2005-05 files Barrel radius=6.450m Barrel half-length=2.775m EC Yoke=3.12m thick EC Yoke ends at 5.895m=2.775+3.120m

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SiD IR Layout M. Breidenbach, P. Burrows, T. Markiewicz

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  1. SiD IR Layout M. Breidenbach, P. Burrows, T. Markiewicz SiD Collaboration Meeting 16-17 December 2005 Fermilab

  2. 2005.10.11 Discussion • SiD Dimensions from 2005-05 files • Barrel radius=6.450m • Barrel half-length=2.775m • EC Yoke=3.12m thick • EC Yoke ends at 5.895m=2.775+3.120m • Garage assembly requirements • 3m shielding wall between beamline position & garage • Assuming self-shielding [which seems OK: see L. Keller, 2005.12.13 SLAC BDS mtg.] wall needed for commissioning only • 5m free space between shield wall & rotated barrel yoke3 • 2m free + 2m assembly fixture+1m free • 4m free space between rotated barrel yoke & rotated barrel HCAL • 1m free + 2m assembly fixture+1m free • 5m free space between rotated barrel HCAL & pit wall • 2m free + 2m assembly fixture+1m free

  3. Detector Access Guesstimates • Door support leg overhang= • 3.2m~25% door height (=barrel diameter=12.9m) • Door opening= • 3.0m • Free space to walk around door ends= • 1.9m • Reserved radius = • 8.0m (6.45 iron +1.55m services) • Free space between dressed barrel & pit walls= • 2.0m • PACMAN annulus= • 3.0m [1m Fe, 2m concrete] • Other • Tunnel diameter 3.2m • Assumed beam height=Barrel radius + 1m

  4. SiD closed, on beamline, in 20m x 28m Pit Wall Barrel Foot Door Tunnel 5.105 m 3.0 m Fixed PAC2 Mobile PAC1 Foot Shield Wall

  5. R20 Detail 38cm OD Support Tube Crab 40cm OD SiD Aperture 1m wide platform

  6. SiD open, on beamline, in 20m x 28m 2.775 m 3.120 m 3.00 m 1.905 m 3.20 m 6.45 m 0.55 m 3.00 m

  7. Half SiD in 48m x 28m IRanamorphic scale Shield Wall 3.00 m 5.00 m Barrel Yokerotated 6.45 m 4.00 m HCALrotated 6.45 m 5.00 m

  8. SiD (closed) in 48m x 28m IRx-scale=y-scale

  9. Elevation View • Pit Elevation: 30m ? • 1.000 Barrel-floor • 12.90 Detector diameter • 12.90 Free space above detector • 3.000 Crane bridge and hook

  10. Remaining Issues • Door opening sequence • If 3.0m long PacMan moves over leg (how?) to outside • 55cm clearance between door radius and PacMan seems marginal • On Shielding wall side, assuming shielding not needed after commissioning, infinite space available • On far side of garage, 10m is arbitrary • 12m is approximate maximum for 2 IR Baseline Configuration • Push-Pull not analyzed yet • Maybe move it out radially, then back (in z) to tunnel wall • 5.105m long PacMan either stays in position, surrounding final doublet/crab support platform, or itself opens radially to move to far walls, permitting 3.0m PacMan to open slightly & move back to pit wall • Many beamline devices including Crab Cavity within 14m of IP • It would be very, very good to have these devices in the tunnel • Suggest we adopt a 18m wide hall by minimizing to ~ZERO both: • 1.9m free space at end when door opens (SLD was ~0.5m) • 3.2m door support length • pocket in wall for door support legs • use legless scheme for earthquake proofing / moving

  11. Si D Open in a 20m x 18m Data Pit Support Legs in pockets, screw drive earthquake constraints, etc. Pit Wall at z=+9m

  12. Half SiD in 48m x 18m IR HallAnamorphic scale

  13. SiD (open) in 48m x 18m IRX scale = y scale

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