Chechia, showing the vessel door hinge and the cavity pumping line
Chechia, the other side of the vessel showing the wave guide to input coupler (foreground) and instrumentation ports
Chechia, the other side of the vessel showing the wave guide to input coupler (foreground) and instrumentation ports
Top of Chechia with a yellow valve actuator and transfer line connection
Chechia right after front head opened (on right). Thermal shields still in place.
Removing nuts from studs that hold thermal shield aluminum ends in place.
Chechia after removal of thermal shield ends.
Lower line is cavity vacuum, upper is helium pumping. Input coupler in upper left of photo.
Another view of same. Copper thermal shield around input coupler.
Another view of same.
Closing cavity vacuum valve. Followed up with torque wrench.
Installing "local clean room", really clean box. Just sets into front part of Chechia.
Clean box set in place for disconnect of cavity vacuum pumping line.
Clean box. Blue sleaves of latex gloves inside. Reach in through cuts in plastic.
View of flange to be disconnected inside. Ordinary conflat. Brass nuts on steel bolts.
Intake side of blower for clean box. Looked like a fine furnace filter.
Flanges inside blanked off after being disconnected.
Thermal shield ends sitting off to the side. Easy to handle by hand. Have fold-down handles.
Clean box blower now connected to another clean area, at outside connection for input coupler. Clean box sitting on cart, open on top.
After cavity vacuum flanges disconnected.
View of clean tent around input coupler.
View of same clean tent from inside of cave looking out.
Input coupler thermal shield removed.
Input coupler with thermal shield removed.
Setting up braces for supporting input coupler for disconnection while holding cavity vacuum.
Outer part of input coupler mostly removed. Support in place above.
Outer part of input coupler mostly removed. Support in place above. Small hand valve for N2 backfill.
Cavity supports in Chechia
Dressed cavity pulled a little bit of the way out.
Attaching the extension of the "table" that supports the dressed cavity.