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TCut cut = "TMath::Abs((acos(Tkr1ZDir)*(180./3.14159))-180.) < 5 && CalEnergyRaw>10";
The image ElectronWithCU_1 and ElectronWithCU_2 shows the distribution of energy deposited in the calorimeter when a electron goes through it. This is a NOT a typical image in run 811. Typically this run shows many events with more than one charge particle in the Calibration Unit. Therefore, these images with only one clean track have been selected. The goal here is not to show a typical image, but to check whether the effect described previously occurred in run 811; and for that one needs events with only 1 electron traversing the calorimeter.
Typical images with more than one charge particle from run 811 can be found here.
Philippe also shown very broad distributions of CalTransRms in past VRVS beam test meeting (2006/08/01). Yet the origin of this broad distributions seems NOT to be related to the effect which is described above. I do NOT see this effect in the events from run 700000811. Details of this analysis can be found inQuickLookToEventsFromRun700000811.
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