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2011/05/28

1900 Data series taken overnight (iZIP format, 0.4096 ms trace length, Ba-133): 07110527_2245; 07110528_0000; 07110528_0116; 07110528_0231; 07110528_0346; 07110528_0501; 07110528_0617; 07110528_0732; 07110528_0847; 07110528_1002; 07110528_1117; 07110528_1233; 07110528_1348; 07110528_1503; 07110528_1619; 07110528_1734.
1940 Data looks strange, as if the crystal has not been neutralised. Taking another look at the configuration of the DAQ reveals that the calibrated 0 V bias voltage was not applied to the charge channels during flashing and cool down. We need to repeat this run.
Start overnight data series.
2105 Start LHe transfer. Helium liquid level 16.8%.
2205 Stop LHe transfer. Helium liquid level 82.5%.