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  Richardson Lab Experimental Log  Not logged in ELOG logo
Message ID: 390     Entry time: Fri Jun 28 18:15:16 2024
Author: Luke 
Type: Update 
Category: VAC 
Subject: Vacuum chamber  

We will be configuring the RGA line to remove the spherical cube from the system. Currently our plan for the new design is to connect a 4.5" to 2.75" Reducing Cross to the gate valve on the vacuum system. It will be orientated vertically with the turbo pump on top coming off the end will be a 90 deg elbow. On the bottom there will be a 4.5" to 2.75" Zero length reducer attached to that will be a Tee on one side the pressure sensor and the other the RGA. Connected to the elbow will be the calibrated leak. 

The only parts not readily available are the ZLR and the 2.75" gaskets

Part name Count needed Status/comment
2.75" Tee 1 In use in current RGA line
4.5" to 2.75" Reducing Cross 1 Needs to be clean and baked
4.5" to 2.75" Zero length reducer 1 To be purchased  
2.75" 90 deg elbow 1 Clean needs to be removed from another part
5/16 - 24 X 2.00" Bolts and nuts 16

8 in clean room and plenty in storage they will need to be clean and baked. Plenty of nuts in clean room.

1/4 - 28 X 1.25" Bolts and nutplates 24 12 in use in RGA line and 12 in storage that will need to be clean and baked. Sufficient nutplates in clean room
1/4 - 28 X 7/8" Bolts  12 Plenty of bolts in clean room
2.75" Copper Gasket   6 5 gaskets in clean room and none in storage. So some will need to be purchased
4.5" Copper Gasket 2 About 10 in clean room 
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