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Argon Purity Decline

PMT calibration runs.

PMT calibration runs are being documented on the spreadsheet below. Shifters please add information associated to PMT calibration runs you take every two hours.

https://docs.google.com/spreadsheets/d/1mcVAPDtrB1iik5MU3j0NcePG2FPHXs9PCh8aVnketQg/edit?usp=sharing

TPC status over time.

Average pulse-height and number of pulses in the TPC collection plane is being tracked on the spreadsheet below. Shifters please fill in information associated to runs taken during your shift. Only use runs > 30 minutes in length.

https://docs.google.com/spreadsheets/d/1uWTEGyV0uHC3W5i7ietwPaQ25f8UEI8C4uuuophAJEM/edit?usp=sharing

Fill the "avg pulse-height" column with the average value obtained from this link [insert the correct run number in the URL]:
http://ubdaq-prod-near2.fnal.gov/Lizard/19131/#/tpc/plane2/h_54_pulseheight_vs_walltime

Fill the "number of pulses" column with the average value obtained from this link [insert the correct run number in the URL]:
http://ubdaq-prod-near2.fnal.gov/Lizard/19133/#/tpc/plane2/h_001_TotPulsesPerRecordWholeDetector

Analysis Tasks

1) Study data from run 19089 in which the loss of lifetime occurred.
a) PMT rates vs. time / O2 concentration readings.
b) e- lifetime vs. time / 02 concentration.

2) PMT late-light decay time analysis.