On the 5th I had tried to start baking the vacuum chamber however certain parts of the chamber were getting too hot and causing the controllers to shut off. So I turned them off so that the next day I could rearrange the temperature probes. I then on the 6th set them up so that instead of overshooting the temperature they would be a little low in places.
After being left over night the cooler parts of the vacuum chamber got much closer to the desired temperature of 120C.
Here is a table of the temperatures of the sections of the chamber. Note: After these measurements were taken the PID controllers were set to 125C.
| Location |
Temperature (C) |
| Lid (PID controller 1 emergency shutoff) |
108 |
| Barrel lower (PID controller 1) |
120 |
| Barrel upper (PID controller 2 emergency shutoff) |
118 |
| RGA volume (PID controller 2) |
120 |
Here is a table of temperature of the flanges that have electronics.
| Electronics |
Temperature (C) |
| Pressure gauge (Main volume) |
79 |
| Main turbo pump |
64 |
| RGA |
51 |
| Pressure gauge (RGA volume) |
55 |
| Cal leak |
47 |
| Mini turbo pump |
50 |
| Pirani gauge |
45 |
Other temperatures of note:
The optical table was about 38C
The cleanroom was around 33C (~91F) |