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1 GEOMETRY FOR TRACKER Eduardo do Couto e Silva - 2/11/00 (drawings are NOT to scale) 1 - List of Figures 2 - Top view of tray with 5 x 5 detectors 3 -

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Presentation on theme: "1 GEOMETRY FOR TRACKER Eduardo do Couto e Silva - 2/11/00 (drawings are NOT to scale) 1 - List of Figures 2 - Top view of tray with 5 x 5 detectors 3 -"— Presentation transcript:

1 1 GEOMETRY FOR TRACKER Eduardo do Couto e Silva - 2/11/00 (drawings are NOT to scale) 1 - List of Figures 2 - Top view of tray with 5 x 5 detectors 3 - Top view of tray with 3 x 3 detectors 4 - Tower stacking 5 - Side view of standard and super GLAST trays 6 - Side view of No lead and bottommost trays 7 - Side view of two consecutive trays 8 - Different plane types (for GLASTSIM) 9 - Tower breakdown structure

2 2 Face sheet (carbon panel) 33.02 cm Ladder length 32.04 cm Ladder with 5 detectors 6.24 cm 6.40 cm Lead converter SSD_gap = 0.01 cm Ladder_gap = 0.02 cm 32.08 cm 6.24 cm 6.40 cm SSD

3 3 Face sheet (carbon panel) 33.02 cm Ladder length 32.06 cm Ladders with 3 detectors 10.52 cm 6.24 cm Lead converter SSD_gap = 0.01 cm Ladder_gap = 0.02 cm 32.08 cm 10.68 cm 6.40 cm SSD

4 4 Standard super GLAST no Lead bottommost 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

5 5 TRAY 2.79 cm TRAY 2.79 cm Thin lead = 0.02 cm thick, placed OUTside the closeout Thick lead = 0.16 cm thick, placed INside the closeout Carbon face sheet 0.0075 cm thick Kapton printed circuit = 0.015 cm thick SSD to SSD in the same tray 2.94 cm SSD to SSD in the same tray 2.92 cm STANDARD SUPER GLAST

6 6 TRAY 2.79 cm TRAY 2.79 cm Carbon face sheet 0.0075 cm thick Kapton printed circuit = 0.015 cm thick SSD to SSD in the same tray 2.92 cm SSD to bottom of the tracker 3.39 cm NO LEAD BOTTOMOST SSD 0.04 cm thick 0.6 cm Z=0 for tracker (center of SSD)

7 7 TRAY 0.15 cm thick Al walls Corner posts used for precise alignment Electronics board 0.127 cm thick Not in GLASTSIM 33.32 cm 33.02 cm TRAY For SSD size see other drawing, gaps are not shown Lead converter size depends on SSD geometry and corresponds to SSD active area Kapton printed circuit not yet included in GLASTSIM Top SSD to top SSD between consecutive trays 3.20 cm Spacer length 0.4166 cm 2.79 cm Close out to walls 0.37 cm this distance varies

8 8 Possible configurations with ladders 012012 345345 square Pb was used for this tray

9 9

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