with help of Tomaru-san, Namai-san, Ueda-san from KEK, and Sato-san

We did renovation work of cryostat.
First, we detached the optical breadboard from cold head.
Then we moved cryostat chamber about 80cm to extract cold head, and now that we can implement viewport windows.

Next step is to implement viewports to 80K shield, and install modified 4K shield to the chamber.

[note]
The cryostat is located different position temporally.
Cold head was attached to optical table using apiezon grease and indium.