Fibre breakages
Very sensitive to accurate robot calibration
~30 fibres (10%) broken during commissioning
normal breakage rate 1/week
March/April breakage rate much larger due to imperfect calibration after R-arm failure
Now much better, aim is max 2 fibres/lunation
Many fibres damaged, poor throughput or fringed.
Only one field plate in use currently while other undergoes repair.
Repairs very difficult and slow but improving
Field Plate 1: 120 fibres, Field Plate 2: 90 fibres