Displaying report 1-1 of 1.
Reports until 14:18, Friday 07 March 2025
Vacuum Systems General (GQuEST)
Daniel Grass - posted 14:18, Friday 07 March 2025 - last comment - 20:46, Sunday 09 March 2025(12167)
8 in to 6 in Reducer Tee Cleaned and Attached to 10 in CF to 8 in CF 12 in Long Custom Nipple on the Laser Filter Cavity

[Jeff, Daniel]

We removed the tape and cleaned the residue from one of the 8" CF Flanges on a 8 in to 6 in Reducer Tee from the Holometer. We then attached it to the 10 in CF to 8 in CF 12 in Long Custom Nipple on the Laser Filter Cavity (LFC) output vacuum cube. We tried to make the 6" CF Flange stick out vertically as best as possible since the 8" flange on the custom nipple is rotatable. The 8" flange on the nipple on the input vacuum cube is also rotatable, so we should be able to align the bolt holes without being constrained by this. I started to implement the 80-20 structure to support the reducer tee. The bolts are quite bad the hex input is easily stripped. We should get better screws (they are 1/4-20 button head socket cap screws, around 1/2" length but I need to check). We have not yet tightened the bolts on the CF Connection.

Comments related to this report
Daniel Grass - 16:24, Sunday 09 March 2025 (12168)

The 80/20 bolts are speced to be and are 1/2" long.

Daniel Grass - 20:46, Sunday 09 March 2025 (12170)

I tightened the bolts on the CF connection to 20 Nm. The flanges were pretty flush all the way around with no copper visible.

Next, we need to clean one of the bellows' flanges (the other should be clean) and attach it to the tee. We then need to slide the cube into the bellows. Maybe we could use the engine hoist to remove some of the weight of the cube.

Displaying report 1-1 of 1.