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    User name Ulmer

    Log entry time 14:50:28 on June27,2000

    Entry number 45000

    keyword=tc_cor and low multiplicity

    The sharp spikes in the hadron X_TRA spectrum correspond to multiplicity=2 in the various wire planes. The resulting incorrect track also affects tc_cor since the correction for path length/velocity requires tracking. The figure below shows tc_cor without and with a cut requiring multiplicities > 3 in each of the four wire planes.
    The secondary distribution is also nearly eliminated when the mult. cut is for >2.

    FIGURE 1