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ligo-ex
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| Richardson Lab Experimental Log |
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Message ID: 91
Entry time: Wed May 3 19:03:47 2023
Reply to this: 94
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| Author: |
Julian,Pamella and Cao |
| Type: |
Physics |
| Category: |
VAC |
| Subject: |
Modify vacuum asssembly and install RGA |
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[Pamella, Julian, Cao]
Today we started re-configuring the vacuum chamber components.
Particle count
- 10:45 am : Starting the particle count in the clean room.
- 11:13 am : Finished the particle count in the clean room.
- Zone 3 :
- 0.3 u: 2535
- 0.5 u: 1413
- 1.0 u: 789
- Zone 4 :
- 0.3 u: 457
- 0.5 u: 290
- 1.0 u: 207
Starting the reconfiguration.
- 11:21 am: Started removing up-to-air valve
- 11:30 am: Finished removing up-to-air valve.
- 11:33 am: Started removing calibrated Ar Leak and the elbow.
- 11:35 am: Finished removing calibrated Ar Leak and started assembling the up-to-air valve.
- 11:47 am: Finished assembling up-to-air valve.
- 11:48 am: Started removing magnetron gauge.
- 11:55 am: Finished removing magnetron gauge.
- 11:57 am: Started installing the elbow and calibrated Ar Leak and started removing the RGA probe
- 12:13 pm: Finished installing the elbow and calibrated Ar Leak.
- 12:20 pm: Break for lunch.
- 01:25 pm: Come back from lunch break.
- 01:30 pm: Started removing RGA line.
- 01:39 pm: Finished removing RGA line.
- 01:39 pm: Started removing gate valve [RGA line] and finished removing gate valve.
- 02:00 pm: Started installing gate valve in the new position.
- 02:08 pm: Fished installing gate valve [RGA line].
- 02:09 pm: Checked the screws in the elbow to gate valve. [RGA line].
- 02:28 pm: Finished checking the screws in the elbow to gate valve [RGA line].
- 02:29 pm: Started installing RGA line.
- 02:39 pm: Finished installing RGA line.
- 02:50 pm: Started installing magnetron gauge.(In this part we assembled gauge with the used gasket)
- 03:02 pm: Finished installing magnetron gauge.
- 03:04 pm: Started installing RGA probe [RGA line].
- 03:13 pm: Finished installing RGA probe [RGA line].
- 03:15 pm: Connected the cables to the magnetron gauge.
- 03:20 pm: Started the testing in the vacuum chamber.
- 04:30 pm: Started installing the RGA 200 and connected the cables (power cable and DB9 cable).
- 04:52 pm: Finished installing the RGA 200 and connected the cables (power cable and DB9 cable).
- 04:53 pm: Started testing the RGA connections. Logrus is able to recognize and connect to RGA unit. We are leaving the turbo pump on for a few hours before checking back for pressure readouts.
- 05:00 pm : Starting the particle count in the clean room.
- Zone 3 :
- 0.3 u: 2244
- 0.5 u: 997
- 1.0 u: 207
- Zone 4 :
- 0.3 u: 2993
- 0.5 u: 1579
- 1.0 u: 498
- 05:30 pm : Finished the particle count in the clean room.
- 05:34 pm: Test pressure readout from the gauges.
- Channel 1 : 1.06E-5 mbar
- Channel 2 :8.89E-6 mbar
- Channel 3 :5.0E-4 mbar
- 05:59 pm: Test pressure readout from the gauges.
- Channel 1: 9.09E-6 mbar
- Channel 2: 7.75E-6 mbar
- Channel 3: 5.0E-4 mbar
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