IR and machine bkg ~5 pages
- IR beam pipe ( shape/thickness, rigidity/safety, heating, vacuum system )
- Support tube of QD0/SD0 and forward calorimeters, devices
    - mechanical structure
    - Modal and GM analyses
    - adjustment, alignment
- Background in VTX, TPC and Lumcal, Bcal by sub-detector groups ?
- LowP -provision  beam pipe, VTX and Bcal including performances

Assembly and integration ~ 6 pages
- Iron structure and surface assembly
- Integration of sub-detector - cables, pipes and supports
- Assembling at the garage position
- Opening at the beam line
- Push-pull operation
   - platform
   - time scale
   - calibration of sub-detectors
   - stability of magnet coil