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    Log entry time 12:43:14 on January26,2005

    Entry number 140078

    keyword=D2 neutron TOF

    This plot TOF time for the Neutron-Array, before (black) and after (red) correction, using event by event known momentum of the Neutron (from Pmiss).
    Statistics are for both the 10 microAmp and the 20 microAmp runs we did over the last few days.
    This peak seems to improve when applying coinc time window cuts
    (unlike what we had before)


    CUTS -
    TCut tof = "NA.tr.wov.tof>100 && NA.tr.tof<800";
    TCut energy = "NA.tr.energy>0";
    TCut Pth = "abs(atan2(SK.pmiss_y_lf,sqrt(SK.pmiss_z_lf*SK.pmiss_z_lf+SK.pmiss_x_lf*SK.pmiss_x_lf))*180./3.1415)<14";
    TCut Pph = "abs(atan2(SK.pmiss_x_lf,SK.pmiss_z_lf)*180./3.1415+99)<5";
    TCut CT = "abs(D.ctimer-2500)<100"
    TCut nhit = "NA.tr.nhits==1";
    TCut mrec = "abs(SK.Mrecoil-.938)<.02";


    (recoil-mass ,phi(miss) ,theta(miss) ,adc ,coinc time )

    PLOT -
    chain->Draw("NA.tr.wov.tof+3.3*6*(sqrt(940*940+SK.pmiss*1000*SK.pmiss*1000)/( SK.pmiss*1000)-4.07) ",tof && Pph && Pth && energy &&mrec&& CT && "NA.tr.wov.tof>100 && NA.tr.wov.tof<800")




    FIGURE 1