| 1030 | Fridge at 78K. Pump out exchange gas and fill LN2 cold trap full. Cryocleaning still has flow. |
| 1625 | Pressure in IVC at 6.3E-6 mbar. Begin blowing out nitrogen. Leak checker stable at 5.5E-10 mbarl/sec. Pump mixture into dump in preparation for throughput test. |
| 1715 | Nitrogen had finished blowing out and the leak checker had a stable rate of 1.09E-9 mbarl/s. Suddenly and for no apparent reason the leak rate jumped to 1.1E-5 mbarl/s. |
| 1755 | Recovered 683 mbar of mixture. |
| 1815 | Throughput test yields 7mbar/min which is rather poor. Pump mixture into dump to try again. Background leak rate before throughput test was 4.1E-8, during throughput test rate was 4.0E-8 mbarl/s, indicating no leak from mixing chamber lines. |
| 1850 | Second throughput test yielded 6 mbar/min and third test yielded 7 mbar/min, fourth test yielded 5 mbar/min suggesting a block though this is not certain. |
| | Final test yields 7 mbar/min. If it is a blockage is a hard blockage. Uh oh. |
| 1906 | During leak check 4.6E-5 mbarl/s leak rate detected. This is too large to continue. |
| 1940 | Spray test performed while dewar lowered. A leak of magnitude roughly 5E-6 mbarl/s was detected in the second from bottom flange near the transfer stick. After tightening the surrounding screws, a retest was performed giving a magnitude of 5E-7 mbarl/s. This must be opened and resealed. To aid in warmup, 0.46 mbar of Nitrogen gas was added to IVC. |
| 2040 | Fill N2 cold trap full. |