Author/Authors :
Akindinov، نويسنده , , Genady A. and Bondarenko، نويسنده , , G. and Golovin، نويسنده , , V. M. GRIGORIEV، نويسنده , , E. and Grishuk، نويسنده , , Yu. and Mal’kevich، نويسنده , , D. and Martemiyanov، نويسنده , , A. and Nedosekin، نويسنده , , A. and Ryabinin، نويسنده , , M. and Sheinkman، نويسنده , , V. and Smirnitskiy، نويسنده , , Oleg A. and Voloshin، نويسنده , , K.، نويسنده ,
Abstract :
Further progress in building high-granular large-scale systems based on scintillation tiles with MRS APD light readout (START) became possible thanks to the creation of an improved version of MRS APD. The cost of the system may now be significantly reduced by using inexpensive extruded scintillator. More than 160 START samples were assembled based on this design modification and proved to possess 100% MIP detection efficiency and the intrinsic noise rate of less than 0.08 Hz. Long-term stability of START characteristics was confirmed after 3.5 months of operation.
Keywords :
Avalanche Photo-diode , Quantum efficiency , Photo-ionization coefficient , Extruded scintillator , WLS fiber , ALICE TOF , Scintillation tile , MRS APD
