Difference: DircBarrel (r2 vs. r1)

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• Evironment requirements like temperature, humidity
  • during installation
  • during operation

• Maintainance
  • How often the subdetector will be accessed, every downtime, never?
  • How you plan to replace parts.

• Space
  • Storage
  • Mounting area
  • Electronics
  • Utilities (cooling machines...)

• Resources
  • purifiers
  • cooler
  • supply lines
  • what else?

• Cables: the area of cables leaving the detector is enough for the moment. So, how many squaremeters cable area you need.

• Support
  • Weight of detector.
  • Support ideas.
  • Support points.
  • Veto areas, where other subsystems are forbidden to connect to.

• Alignment