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0236211846 LAC_

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MidPos Temperature 11-15 C

LAC NEG thresholds

2d histogram NEG_FACE signal vs POS_FACE signal - threshold exist only on positive side - demonstrates that MidPos configuration is correct
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LAC POS thresholds

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The mean value is peaked at 4 MeV. The temperatures appear not to be uniform across the CALs.

LAC distribution per CDE

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*Y-axis: LAC threshold in MeV
*X-axis: (tower*96 + layer*12 + Xtal)

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There are a few outliers in the distribution. The two four extreme ones are:

 

;twr lyr col face lac errlac pedDrift lacMeV fitstat chi2 mev_slope mev_offset
1115 52 106 10 144148.106777 0.510417545897 -142.540281275 4.86377 0 109.845 0.030658 0 
13 4 4 1 72.7489 0.284042 -18.2074 2.83938 0 192.312 0.031217 0  
.83631 0 119.418 0.031904 0
0 0 9 0 90.418 0.457961 -6.89924 3 0 77.4273 0.030827 0
2 5 2 0 93.6192 0.351582 -7.67663 3.12812 0 62.7175 0.030881 0
5 3 9 0 101 0.434716 -3.64904 3.1987 0 80.0416 0.030566 0

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The LAC is well-defined, with sufficient statistics, so the threshold is real and might need to be corrected.

Pedestal drifts

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File with the LAC/Pedestal values