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The Phase2 geometries are automatically created using the script generate2023Geometry.py.

Different versions of various subdetectors can be combined. The available versions are:

Tracker:

  • T5: Phase2 tilted tracker (v6.1.3) w/ phase 2 pixel (v4.0.2.5)
  • T6: Phase2 tilted tracker (v6.1.4) w/ phase 2 pixel (v4.0.4) (TEDD slighly rotated + Inner Tracker barrel has lower radii than TDR T5 geometry)
  • T7: Phase2 tilted tracker (v6.1.4) w/ phase 2 pixel (v4.2.0) (same as T6 but 25x100 in 1x2 modules, 50x200 in 2x2 modules)
  • T8: Phase2 tilted tracker (v6.1.4) w/ phase 2 pixel (v4.2.1) (same as T6 but 25x100 in 1x2 modules, 100x100 in 2x2 modules)
  • T9: Same as T5, but with an increase of 20% of the material (stress test studies)
  • T10: Same as T5 but with an increase of 50% of the material (stress test studies)
  • T11: Phase2 tilted tracker (v6.1.4) w/ phase 2 pixel (v4.0.5) (same as T6 but 50x50 in all modules)

Calorimeters:

  • C3: HGCal (v8) + Phase2 HCAL and EB
  • C4: HGCal (v9) + Phase2 HCAL and EB
  • C5: HGCal (v9 without virtual wafers) + Phase2 HCAL and EB
  • C6: HGCal (v9) + HFNose + Phase2 HCAL and EB
  • C7: HGCal (v9a with inner support structure) + Phase2 HCAL and EB

Muon system:

  • M2: Phase2 muon system for TDR w/ GE2/1, ME0, RE3/1, RE4/1 (incl. granularity in ME0, staggered GE2/1)

Fast Timing system:

  • I1: No Fast Timing detector
  • I2: Fast Timing detector (LYSO barrel, silicon endcap), only sensitive layers
  • I3: Fast Timing detector (LYSO barrel, silicon endcap), full description with passive materials, LYSO tiles
  • I4: Fast Timing detector (LYSO barrel, silicon endcap), full description with passive materials, LYSO bars
  • I5: Fast Timing detector (LYSO barrel, silicon endcap), full description with passive materials, LYSO bars along z flat
  • I6: Fast Timing detector (LYSO barrel, silicon endcap), full description with passive materials, LYSO bars along z flat no hole between modules

The script also handles the common and forward elements of the geometry:

  • O2: detailed cavern description
  • F2: modifications needed to accommodate detailed cavern, ZDC description is removed.
  • F3: same as F2 but changes due to HFNose

Several detector combinations have been generated:

  • D17 = T5+C3+M2+I1+O2+F2
  • D19 = T5+C3+M2+I2+O2+F2
  • D21 = T6+C3+M2+I1+O2+F2
  • D22 = T7+C3+M2+I1+O2+F2
  • D23 = T8+C3+M2+I1+O2+F2
  • D24 = T6+C3+M2+I3+O2+F2
  • D25 = T6+C3+M2+I4+O2+F2
  • D26 = T9+C3+M2+I1+C2+F2
  • D27 = T10+C3+M2+I1+O2+F2
  • D28 = T6+C4+M2+I1+O2+F2
  • D29 = T11+C3+M2+I1+O2+F2
  • D30 = T6+C5+M2+I1+O2+F2
  • D31 = T6+C6+M2+I1+O2+F3
  • D32 = T6+C7+M2+I1+O2+F2
  • D33 = T6+C3+M2+I5+O2+F2
  • D34 = T6+C3+M2+I6+O2+F2

Currently, D17 is considered to be the baseline for the Phase 2 Muon and Barrel TDRs.