2025/01/17 (Friday)
* Lab in-personnel: Himangshu, Zach, Elliot
| 1050 | MC(H35)= 4K. Cleaned He trap. Contaiminants: 540 mbar. |
|---|---|
| 1055 | Baratron with all mixture in, 5.681 VDC |
| 1138 | Gauge on He3 cylinder: Initial: 41 PSI, Final: 30 PSI . P1 went off scale. Start Pumping it into dump and read off final Baratro. |
| 1140 | Baratron: Initial: 5.699 VDC. Open V2 to let the added He3 into dump. Baratron Final: 5.738 V. This would mean we added 6.738-5.669 = ~ 40 Torr of pure He3 |
| 1155 | Put another puff, this time the pressure on the gauge on he3 cylinder went down to 0. Baratron Final: 5.787 VDC. This is where we will stop adding more He3. Preparing for another cooldown. |