This entry is a log on Aug. 11.

I opened the chamber in order to improve the alignment of the cavity.
The transmitted power was improved by a factor of 2.

Then I closed the chamber and started evacuating.

[note]

One temperature sensor shows fluctuation.
It may come from the connection of the cable inside the chamber.
I think it does not have serious impact on the experimet because the fluctuation is within 0.2 K though our requirement is about 1 K.