What we did
We did the integrating sphere calibration for YPcal.
The results are attached.
Note
This is the first calibration of WSK and integrating spheres of YPcal since WSK broke down on 2024 December 11(A calibration of WSK and GSK has already done).
The WSK used in this calibration is new, so the experimental results cannot be directly compared with previous data.
Related klog: https://klog.icrr.u-tokyo.ac.jp/osl/?r=31960
Related cal wiki: https://dac.icrr.u-tokyo.ac.jp/KAGRA/DAWG/CAL/O4_meas_date/UToyama_241211
