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SDD Survey Status Report

SDD Survey Status Report. Mario Sitta (on behalf of Martin Poghosian). Current status. ITS Overlaps Status Report. Mario Sitta Univ. Piemonte Orientale INFN. The overlap saga: Episode #1382. In the ideal geometry: All ITS-FMD overlaps removed (but see later on)

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SDD Survey Status Report

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  1. SDD Survey Status Report Mario Sitta (on behalf of Martin Poghosian)

  2. Current status

  3. ITS Overlaps Status Report Mario Sitta Univ. Piemonte Orientale INFN

  4. The overlap saga: Episode #1382 In the ideal geometry: • All ITS-FMD overlaps removed (but see later on) • Two internal ITS (SPD services - SSD patch panel) overlap reappeared (probably my fault) • An alternative solution must be found Then we have to afford the overlaps in the misaligned geometry...

  5. Solved or put aside ? FMD-SPD services “solved” with • different φ position for +Z and -Z modules (1 ÷ 3 deg. difference) ✓ ok, more realistic • different vertical orientation of cooling tubes (1 deg. difference) ✓ ok, more realistic • reduced cooling tubes Rin and Rout (1 mm each)  bad, less material budget • two modules removed (-Z side) bad, less material budget

  6. ITSSPDExtender FMD3_wire But was it all our fault ? Maybe, maybe not... Let's see one ovlp = 0.075 Uhm... ok, let's move the Extender Solved

  7. ITSSPDCoolingTubeCone FMD3_wire Let's see another one ovlp = 0.05 In current version: reduce Rin and Rout Unrealistic - and less material budget

  8. ITSSPDCoolingTubeCone FMD3_wire What would be “realistic” ? ovlp = 0.05 Tube made of Inox 6 mm wide (Rout) 1 mm thick Wire made of Steel 1 mm thick In the real world, which one would bend ?

  9. FMD3_cooling_plate ITSSPDCoolingTubeCone The same otherwise ovlp = 0.049 In current version: reduce Rin and Rout Unrealistic - and less material budget

  10. FMD3_cooling_plate ITSSPDCoolingTubeCone Getting bored ? ovlp = 0.049 Plate made of Aluminium 0.33 mm thick Tube made of Inox 6 mm wide (Rout) 1 mm thick In the real world, which one would bend ?

  11. Summary • Two remaining overlaps will be solved • The original dimensions of reduced volumes will be reintroduced • maximum effort to minimize any external overlaps • Remaining overlaps must be solved from both sides (Alberto and me already made enough miracles)

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