Dear all, I have 2 questions regarding ecal reconstruction: 1) What is the difference between the two values reported by getRawEnergy() and getCorrectedEnergy() of the class CalorimeterHit? 2) Given a calibrated hit, I can access the corresponding energy in MeV. I want to "revert back" to the pedestal-subtracted ADC sum: the two values are related by Energy ( MeV) = gain * PedestalSubtractedADCsum The easiest way I found to do this is (cellID is from hit.getCellID() and energy is from hit.GetCorrectedEnergy()): EcalChannelConstants channelData = ecalConditions.getChannelConstants(ecalConditions.getChannelCollection().findGeometric(cellID)); double RawSum=energy/ ECalUtils.MeV; double gain=channelData.getGain().getGain(); double adc=RawSum/gain; Is there a simpler or better method? Thanks Andrea ######################################################################## 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