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Update on HCAL parameters. Christian Grefe CERN. Overview. The HCAL design choice is (for a fixed λ ) a cost optimization between coil size and dense but expensive tungsten.

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Update on HCAL parameters

Christian Grefe

CERN

overview
Overview
  • The HCAL design choice is (for a fixed λ) a cost optimization between coil size and dense but expensive tungsten.
  • The numbers for different HCAL configurations shown on the 15th December were for equally thick absorber plates (2.0 cm)
  • The comparison should instead be for absorber plate thicknesses with equal λ and thus equal number of layers
hcal barrel dimensions same thickness for passive
HCAL barrel dimensions (same thickness for passive)
  • 7 λ case (layer: 2.0 cm absorber + 0.75 cm Scint), Rmin= 141 cm, 12 fold
hcal barrel dimensions sid like tracker
HCAL barrel dimensions (SiD-like tracker)
  • 7 λ case (layer: 0.12 λabsorber + 0.75 Scint), Rmin= 141 cm, 12 fold
hcal barrel dimensions ild like tracker
HCAL barrel dimensions (ILD-like tracker)
  • 7 λ case (layer: 0.12 λabsorber + 0.75 Scint), Rmin= 206cm, 12 fold
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