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Particle Identification
using Time-of-flight
? Start timing using Beam-Beam counter
( cherenkov radiator + PMT¡¯s ) ; ?t ~ 50 ps
? TOF wall ( 1000 Sc. slats + 2000 PMT¡¯s )
; ?t ~ 80 ps
? Emcal ( PbSc + PMT¡¯s) ; ?t ~ 300 ps
( PbGl + PMT¡¯s) ; ?t ~ 400 ps
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