MC d-Au simulations

Test of the tower calibration tool based on isolated MIP towers

Method:
- reject towers with ADC <=2 (equivalent 2 sigma over pedestal)
- reject towers with ADC>255 ( to avoid n*256 pattern)
- accept towers in the center of empty 3x3 patch
- accept towers in the center of empty 5x5 patch
- ADC spectra for accepted towers were separately accumulated for 12 eta-bins.
- calculate acceptance efficiency to see 'MIP peak' .

Example of the towers response : X= (sector-1)*5+subsector-1; Y =eta bin; Z=ADC.

Fot the event event the hits at (37,2) & (35,5) are accepted for the 3x3 patch, and only hit (37,2) for the 5x5 patch.

Left (right) columns is for 3x3 (5x5) patch. Upper plots: all ADC (black), accepted ADC (color). Lower plots: ratio of accepted hits to all hits. Gaussian was fitted just to localize the maximum. Plot is for all 20 towers at eta bin=4 (ignore the label) 

eta bin     peak position      calculated MIP    ratio    plot
            from fit           position   
 1	    6.7 +/-.8	       8.9               0.75     .gif  
 2	    8.7 +/-.6	       9.8               0.89     .gif  
 3	    8.7 +/-.6	      10.8               0.81     .gif  
 4 	    9.3 +/-1.	      11.9               0.78     .gif  
 5 	    9.8 +/-.6	      13.0               0.75     .gif  
 6	   13.8 +/-2.	      14.2               0.97     .gif  
 7	   10.9 +/-.9	      15.5               0.70     .gif  
 8 	   14.4 +/-2.1	      16.7               0.86     .gif  
 9	   13.8 +/-1.8	      18.0               0.77     .gif   
10	   16.7 +/-.9	      19.5               0.86     .gif  
11	   17.5 +/-.7	      21.0               0.83     .gif  
12	   17.0 +/-1.3	      22.5               0.76     .gif