| Cryo |
| 1015 | The P1 volume reads 45 mbar - this is off-scale on the Pirani gauge, so open this to G1 and check that gauge: 43 mbar, actually about the same. |
| 1020 | Pump out the P1 volume with the scroll pump. Down to 0.34 mbar after 30 minutes. |
| 1530 | Pump out LN2 Cold Traps 1 and 2 (which are at room temperature.) Isolate traps after G1(traps) falls to about 0.7 mbar. |
| 1535 | Fill LN2 cold trap bath |
| 1545 | OOPS - I thought I'd pumped out the traps, but I forgot to open the speedivalves. So, take the traps out and let them warm to room temp. We want to be sure they're empty before we start cryocleaning. |
| 1625 | Traps almost at room temp (I put them in a bucket of warm water to speed up the process). With both traps open to G1 pressure is about 11 mbar. Pump out traps with scroll pump, for reals this time. |