| 1300 | Cleaned turbo pump gauge. Only cleaned the cold-cathode elements, not the pirani elements. They were very dirty. |
| | Did not replace the Ignition Aid or any other parts, did not use the Mounting Tool. (Didn't have them.) |
| | Leak-checked reassembled gauge, spray-tests. No leak seen. Background 2e-9 mbar*l/s |
| | Pumped out line to turbo, including gauge, using leak checker. Leak checker gauge and turbo gauge agreed well down to about 5 ubar. |
| | Isolated leakchecker and opened turbo valve to pump on gauge. Pressure fell quickly to 3e-4 mbar |
| 1520 | After a while pressure display was oscillating between 7.4e-5 and 1.6e-4 mbar |
| 1632 | External pressure sensor oscillating around 1E-5 mbar. Attach baffles to striplines 19, 20 and 27 in preparation for tomorrow's installation. Perform Stripline Electrical check. Results below, with no change from yesterday: |