| 1044 | Filled LN2 cold trap. |
| | Tower temperature back down to ~ 80 mK. Pressure difference in G1 and G2 is ~ 20 mbar, though, so we'll clean the helium cold trap. |
| | Since the tower temperature is okay, we'll do some noise tests first by putting on the HV board with the aluminum shield. |
| 1817 | Stopped circulation. Pumping mix into dump. |
| 1853 | G1 seems to have plateaud at 0.7 mbar. G2 ~ 10 mbar. |
| 1907 | Isolated He cold trap and pulled it out of the bath. G1 jumped to 180 mbar and then decreased, which suggests leak (probably V12A). |
| 2001 | Heated cold trap up. Pumping on it for ~ 1/2 hour before putting back into main bath. |
| 2100 | Cold trap placed back into main bath; circulation has been re-started. |
| 2115 | Filled LN2 cold trap |
| 2120 | Tomorrow there will be more tests on the interface boards. It seems that there's no connection between the two connector ends, so the goal is to see what would happen if wire was connected between the two, and then connecting it to the aluminum shield. We know we can get down to 3 mV of noise, but the trouble is reproducing/maintaing this low level. |