| 0948 | MC X12004=300K, pump N2 exchange gas out |
| | Leak checked IVC from outside, no leak found at 2E-8cc/s level |
| 1122 | IVC He signal jumps from 1.*E-8cc/s to 1.9E-7cc/s, there might be chance to find the leak at room temperature |
| | Dry the dewar by blowing air to the bath |
| 1231 | IVC He signal: 1.57E-7 cc/s, close IVC valve |
| 1233 | IVC He signal: 1.56E-7 cc/s, no effect from IVC valve, close NW25 valve on pumping manifold |
| 1236 | IVC He signal: 1.54E-7 cc/s, close NW40 valve |
| 1239 | He signal went up a little bit, 1.83E-7 cc/s, too much He in the room? |
| 1242 | Close valve on the leak checker, He signal drops to 3.5E-10 cc/s |
| 1245 | Close pumping station leak check valve, open the valve on the leak checker, He signal: 4.8E-10 cc/s |
| 1247 | Open pumping station leak check valve, He signal: 2.4E-7 cc/s |
| 1250 | Isolate vacuum gauge on the pumping station, He signal drops to 7.5E-10 cc/s |
| 1252 | Open NW25 valve on the pumping manifold, He signal: 9.4E-10 cc/s |
| 1255 | Open IVC valve, He signal: 1E-8 cc/s |
| 1258 | Open the NW40 valve on the pumping manifold |
| 1303 | IVC He signal: 2.8E-9 cc/s |
| 1319 | Leak check around IVC, no gross leak found at BG level 5E-9 cc/s |
| 1332 | The air leak through the old o-ring on top of the fridge is still there, peak leak 7.8E-8 cc/s |
| 1907 | Replaced the bottom In seal, no gross leak found at BG 4E-8 cc/s |
| 1955 | Raised Dewar, pump the IVC overnight |