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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