Today, I assembled the third 80K shield window because the first one has some scars (around the edge of the mirrror though).
Therefore I decided to use two better ones for my experiment.

After assembling, I installed two 80K shield windows on the adapters where they are attached at input and output ports as attached picture.
When I was installing, I used indium wire between the mirror holders and adapters in order to improve heat conduction.

[Next Step]

• Cabling inside the chamber
• Install 4K shield
• Cooling test