PPT ½½¶óÀ̵å
PID by Cherenkov
? Cherenkov Ring Image for excellent
electron/hadron discrimination
? radiator gas:
co2 at the beginning
ethane (n=1.00082) or
methane (n=1.00044)
? pion rejection factor
of ~ 103 for p ? 4 GeV
? ??, ?? ~ 1o and few degrees
of two ring separation on
both ? and ?
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