First EPD Physics of 2018
The very first physics run of the EPD is 19074053. This run includes the proper gate settings and bias settings.
A one figure summary:
First the interesting points...
Figure 1: Average ADC Channel by Channel from run 19074053.
The green channel is West PP 5 TT 23. It does have a lower MIP peak than the others.
Figure 2: The ADC spectra on the right is the green tiles from the average ADC (W PP5 TT23). I noticed that the voltage was a very low Vbias = 55. This was accidentally changed from 58V in the process of setting the channels connected to the TT 0 "tiles" to 58 V. We have changed it back.
The two Yellow Channels were: WPP12TT31 (Vbias = 57) and WPP12TT18 (Vbias = 56.9)
Mike's output indicates that these should be WPP12TT31 = 58.5 and WPP12TT18 = 56.9, so the latter is correct but not the former. Macro cut off the very last entry, so this is the old value. I have fixed this in the macro and online. Other spot-checks indicate a consistent voltage so I will change the latter one and look again.
All of these should be fixed for run numbers after 19047061.
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