KAGRA MIR (Absorption)
SimonZeidler - 09:56, Thursday 12 March 2020 (2073)
Measuring absorption on annealed S1 and S5

Pengbo, Simon

We received the samples S1 and S5 back from France after their annealing.
Before we started measuring the absorption coefficient, we inspected the samples and we discovered some damages on the edges of both samples. Interestingly, the damages are only on one side (see attached photos).

The measuremetns started with S5 and are ongoing. However, before setting the sample into the sample holder, we cleaned it with FC on both sides.

Images attached to this report
2073_20200312015508_43.jpg 2073_20200312015515_24.jpg 2073_20200312015524_35.jpg 2073_20200312015528_15.jpg 2073_20200312015535_16.jpg