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Takashi and Bradley, Thanks for checking this. We should "turn every stone" in the simulation chain to understand what is going on with our data-MC agreement. Can you please (with all relevant people) write a note (HPS-Note) on details of simulation scheme and tests that are done showing that everything works correct. Thanks, Stepan On 10/13/16 12:39 PM, Maruyama, Takashi wrote: > I have checked Bradley's expected number of events per 500K bunches are correct. > > Takashi > > -----Original Message----- > From: [log in to unmask] [mailto:[log in to unmask]] On Behalf Of Bradley T Yale > Sent: Wednesday, October 12, 2016 3:19 PM > To: hps-software > Cc: Stepan Stepanyan; Maurik Holtrop; Graham, Mathew Thomas > Subject: Tridents and WABs after mixing > > Here is the number and frequency of trident events just after mixing into 500k wab-beam-tri events (after the target): > > > > > > > The integrated MadGraph4 cross section for the trident file was 0.14566 barns, which translates into 1166 trident events per 500k beam buckets, so this agrees. > > The number also matches how many tridents were sampled before the actual mixing occurred, so none were lost in the process. > > > > > Similarly, 4977 WAB electrons were sampled and mixed, agreeing with the calculated number of 5047 (0.63059 barns). > > > > > To get these numbers: > > > > > #events per 500k bunches = > > Sigma*(6.306*^-2 atoms/barm-cm)*(0.0004062 cm)*(625 electrons/bunch)*(500000 bunches) > > > > > > So this shows that the MadGraph cross sections can be recovered after mixing. > > Whether or not these generated cross sections are accurate is another question. > > > > > > > > > > ________________________________ > > Use REPLY-ALL to reply to list > > To unsubscribe from the HPS-SOFTWARE list, click the following link: > https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=HPS-SOFTWARE&A=1 > > ######################################################################## > Use REPLY-ALL to reply to list > > To unsubscribe from the HPS-SOFTWARE list, click the following link: > https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=HPS-SOFTWARE&A=1 ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the HPS-SOFTWARE list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=HPS-SOFTWARE&A=1