PowerPoint Presentation - T0/TOF Update Time Stability

Frank L. H. Wolfs

Department of Physics and Astronomy, University of Rochester

T0 Efficiency

•Based on the number of charged particles detected we can estimate our efficiency for d + Au:

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•P side: P(NP = 0) = 0.30

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•N side: P(NN = 0) = 0.12

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•Vertex efficiency = P(NP > 0) x P(NN > 0) = 0.62

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•Collision time efficiency = 1 - P(NP = 0) x P(NN = 0) = 0.96

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•Note: the numbers quoted here are the number of primary particles. The number of secondaries is a factor of 2 - 3 larger than the number of primaries.

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•Saturation certainly will not be a problem for d + Au.