FOCUS Outer em cal upgrade

• A Tile Tiebreaker Upgrade for the FOCUS OE
  • 10cm by 10cm by 0.5cm BC404 scintillator tile, readout by two 1mm diam WLS fibers
  • Thermal splicing between a WLS and a clear fiber. A shrinking tube protects the splice.
  • The complete tile with four 2m long . clear optical fibers, guiding the scintillation light to the photomultiplier.
  • Layout of the tie-breaker, with counter names and numbering.
  • Layout of the tie-breaker, showing detail of edge counters.
  • Cross-section layout of the tie-breaker (along beam axis).