| ID |
Date |
Author |
Type |
Category |
Subject |
|
352
|
Sun Mar 24 11:49:27 2024 |
Aiden | Update | General | FROSTI RGA Scan |
| Took RGA data 1 day after the conclusion of Bake 13. Bake 13 ended on Saturday March 23, the RGA data shown was taken on Sunday March 24. The scan shows that the FROSTI is very clean with no outgassing. The HC levels are at 25 e-10. The pressure in the chamber was also a 1.64 e-8 Torr. |
|
353
|
Sun Mar 24 11:50:37 2024 |
Aiden | Update | Clean & Bake | Cal Tech FROSTI Parts |
| Bagged the FROSTI legs and feet after the conclusion of the clean and bake. They are double bagged and sitting in the flow bench. |
|
367
|
Mon May 13 14:48:27 2024 |
Aiden | Update | VAC | New Vacuum Chamber Design |
| I created a new model for the vacuum chamber based on the ideas from last week's meeting.
It should be noted that we can not have the zero length reducer and the gate valve on the same arm as they both have blind tapped holes. We need to decide if we want the gate valve or not as if we do, we will need to use the 3 inch long reducer.
Important Measurements:
From the back of the flange to the back of the RGA: 25.25 in
Height from bottom of the blank to the bottom of the chamber: 2.75 in |
|
372
|
Mon Jun 3 09:24:48 2024 |
Aiden | Update | VAC | Vacuum Chamber Rendering |
| Here is a new render of the vacuum chamber that includes the 2.75 tee to place the Argon leak right next to the RGA. The conical reducer under the spherical cube was also replaced with a 4.5 blank. The height from the bottom of the blank to the bottom face of the chamber is 5.45". With the chamber now on 1" standoffs, we will need a support with a height of 6.45". |
|
87
|
Mon May 1 17:10:25 2023 |
Julian, Cao | Physics | VAC | Installing Pirani gauge and RGA probe onto to vacuum chamber |
[Julian, Cao]
- 03:00 pm: Particle count
- : Zone 3
- 0.3 um: 498
- 0.5 um: 124
- 1 um: 124
- : Zone 4
- 0.3 um: 748
- 0.5 um: 457
- 1 um: 374
- 03:32 pm: Installing Pirani gauge onto pump line
- 03:51 pm: Finish installing Pirani gauge, start installing RGA probe
- 04:03 pm: Finish installing PRGA probe, start routing cable from gauge controller to Pirani gauge
- 04:30 pm: All ethernet cables are routed and connected to gauge controllers
- 04:48 pm: Power gauge controller up, all gauges are recognised and readout shows atmospheric pressure as expected (1000 mbar)
- 04:51 pm: End-of-work particle count
- : Zone 3
- 0.3 um: 1413
- 0.5 um: 872
- 1 um: 623
- : Zone 4
- 0.3 um: 374
- 0.5 um: 166
- 1 um: 166
We also closed all the valves so we can start testing vacuum pump down of isolated volume tomorrow.
|