Scintillator for the Preshower & Crack Detectors

The amount of scintillator needed for the new CPR is about 50 m2 .
A current prototype, consisting in scintillator tiles provided by the CDF JINR Dubna group and
mirrored Pol.Hi.Tech fibers, provided a light yield of ~30 photoelectrons at the exit of the tile,
exceeding the design requirement.

The new CCR will use the same technique but the available space will limit the scintillator thickness to 5mm.
Ten tiles, ~5cm wide, will cover each phi-crack with the same calorimeter segmentation of 10 towers/wedge. 

   A ball-shaped groove for the CPR2 tiles (CDF 6785)
 

  Test of the CPR2 tile/fiber system (CDF 6678)


   Test of Scintillator Tiles (CDF 6228)
 
  Test of Different Groove Paths (CDF 6522)


 
A Dubna tile with sigma-groove

 
Evolution of a Dubna/PolHiTech Tile

 


Physics
Design Scintillator Phototubes High Voltage Simulation Tsukuba

 

Last updated 12/03/2003
by Stefano Lami,   lami@fnal.gov