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I don't think there is a better way to do this than making a new hit with the new energy. You can see how the hits are made in EcalRawConverterDriver and familiarize yourself with the constructors. Hope this helps. On Sun, 7 Dec 2014, Kyle McCarty wrote: > Thanks Sho. Is there a way to clone an existing hit and just change the > energy? If not, is there anything beyond just declaring a new object needed > to make a hit? How do you attach hit location and other such information to > it? > > Thanks, > > Kyle > On Dec 7, 2014 9:24 PM, "Sho Uemura" <[log in to unmask]> wrote: > >> The systematic shift could be done by running MC normally (with the >> uniform ideal gain of 1.0), and running recon using the >> <gain>shiftedGain</gain> option of EcalRawConverterDriver, which will run >> the hit reconstruction with a uniform gain of shiftedGain (!=1.0). This >> option was added for this exact purpose, when Pelle was doing a similar >> study. >> >> There's nothing built in that would do the random shift. Pelle and I >> talked about doing this by making a copy of the text conditions with >> randomly smeared gains, and running the MC with the unsmeared gains and the >> recon with the smeared gains. This is harder to do with the database >> conditions. >> >> You could write a driver that makes new hits, as you suggest. If you want >> your random per-crystal shifts to be consistent between runs of your >> analysis, you should either store them somewhere or generate them >> deterministically (e.g. seed Random() with the crystal number). Maybe >> you've already thought about this. >> >> On Sun, 7 Dec 2014, Kyle McCarty wrote: >> >> Hello hps-software, >>> >>> I want to perform a study on how variations in beam energy calibrations >>> affect trigger performance. I was going to do this by applying (for two >>> different studies) a systematic shift to all hit energies and a Gaussian >>> shift that is constant throughout the run, but random for each crystal. >>> >>> What is the best way to do this within the software? Is there a way to set >>> the energy in the hits as they are processed? Should I create new hits and >>> apply change the energy? Is there already a way to do this? >>> >>> Thanks, >>> >>> Kyle >>> >>> ######################################################################## >>> 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