¥Direct determination of
the time resolution of the T0 counters has been complicated by the difference
in response for d + Au compared to Au + Au.
¥For Au + Au, the slewing
parameters were optimized by looking at the time difference between counters in
the same array for good collision events.
¥This
procedure fails for d + Au.
¥For collisions, there
appears to be at most one prompt T0.