1. MINERvA Simulation - HCAL and ECAL Calorimetry Jaewon Park University of Rochester MINERvA Collaboration Meeting, Sep 29, 2006

2. Theta dependence Need to calibrate (or correct leakage) to make mean shift flat

3. Theta dependence Like to know whether mean shift is effect of leakage or improper calibration Event selection for avoiding MIP-like event makes theta dependence more compilcated

4. Guessing leakage from extended OD layers Extended OD layers: 5.72cm x 3 + 11.43cm + 5cm x 19 layers Mean shift got better With extended OD geometry, leakage is eliminated. Rest of mean shift is matter of calibration

5. Guessing leakage from extended OD layers E id and E hcal from extended OD looks complementary shape Leakage energy is acquired from extended layers

6. Relative calibration for OD layers E id and E hcal from extended OD looks complementary shape Leakage energy is acquired from extended layers Relative calibration constant for OD can be estimated using the fact total energy should be constant a=1.3 seems best value

7. OD calibration: Applying to actual geometry Mean shift got better. Resolution increased a little bit. It’s avoidable. Same for leakage correction Rest of thing is leakage correction  Estimating leakage: Need to parametise leakage as function of interaction length  Simple leakage correction can be based on interaction length

8. Slot optimization 45.7411.4312.1559.777.3855v4 45.7511.43 7.63 v3 45.735.7211.43 5.72v2 45.7311.43 5.72 v1 45.7417.1511.435.72 orig OD v2 is not practical  Too thin most outer layer OD v4 would be best

9. ECAL -Overview Preliminary ECAH study  Electron beam is used. (Previous HCAL study uses proton beam) Looked at Energy dependence, Vertex Z dependence, theta dependence Try to find calibration constant for ECAL  Here, ID means pure plastic scintillator After some tries, ECAL calibration factor 2.5 gives better resolution than 1.75

10. DS-ECAL Energy dependence Vz = 0cm Theta=0deg

11. DS-ECAL Vertex Z dependence 1GeV electron beam Theta=0deg

12. Barrel ECAL Theta dependence E=1GeV, Vz = 0cm Theta=0,10,…50de g 2.5 times OD calibration factor seems to prevent leakage but made resolution twice

13. Thicker ECAL 0.4mm lead gives ~20% decrease on resolution