The Central Drift Chamber of the BELLE detector at the KEK B-factory is a c
ylindrical wire chamber device that uses a helium-based gas and aluminum fi
eld wires and is situated in a 1.5 T magnetic field. The transverse momentu
m resolution for charged tracks with 1.0 GeV/c transverse momentum is 0.35%
. This paper describes the chamber's configuration and performance. (C) 200
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