1. IHEP Hadron Shower Shape Song LIANG Email: liangs @ ihep.ac.cn CMS-IHEP, China 2009.12.25

2. IHEP 2 Data Sample  1). Data sample: pi-  Eta = 0.65779  Phi = 0.21976  E : 20~120.0 GeV  Events:40000

3. IHEP 3 The distribution of number of crystals which have energy response. The distribution of the energy of every hit

4. IHEP 4 The energy respose of some events

5. IHEP 5 Some bad shower

6. IHEP 6 The discreteness of the every shower

7. IHEP 7 eta and phi of the crystal which the hadron hit the ECAL, calculated from track extrapoloation.

8. IHEP 8 The relation of the deposit energy of ECAL and HCAL

9. IHEP 9 Fitting the shower shape  Single Pi-  Stable hit point  Formula:  2D fitting  Fitting parameters: CX,CY, R1,Etot

10. IHEP 10 The distribution of the fitting parameters

11. IHEP 11 Esum9x9 Energy of fitting

12. IHEP 12 The shower shape From the real hit From the fitting

13. IHEP 13 Real shower shape Fitting shower shape

14. IHEP 14  The End!  Backup  Merry Christmas!

15. IHEP 15 The distribution of the 9x9 crystals deposit energy

16. IHEP 16