| 0010 | Stop data series 07110502_2259 on file 9. |
| | Start flashing detector. |
| 1405 | Fill N2 cold trap full. |
| 1800 | No luck seeing 60 keV peak in 07110502_2009, or 356 keV peak in 07110502_2259. The background spectrum is present, but no peaks. Perhaps we need to place the source closer to the detector. |
| 1845 | Stop flashing detector. |
| 1940 | Take short data series to try to find 356 keV peak from Ba-133: 07110503_1938; trigger threshold set at 40 ADC bins for each charge channel; charge-only. Ba-133 source placed as close as possible to detector. |
| 1955 | Start flashing detector. |
| 2035 | Stop flashing detector. |
| 2100 | Can't see 356 keV peak in 07110503_1938 data… perhaps it is time to try the old DAQ… |
| 2140 | Take data series with old DAQ: 07110503_2140; trigger threshold set at 40 ADC bins for each charge channel; charge-only. Ba-133 source 13“ below mu-metal shield. |
| 2240 | Stop data series 07110503_2140 on file 9. Still can't see 356 keV peak. Why? The background spectrum is pretty clear… |
| 2305 | Helium liquid level 26.5%; a bit high, but I want to go home. Start LHe transfer. |
| | With a tower temperature of 55 mK and a low liquid helium evaporation rate, this is great run in terms of cryogenics. Shame about the difficulty in seeing gamma lines… |
| 2335 | Stop LHe transfer. Liquid helium level 96.2%. |