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KAGRA MIR (Polarization)
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PengboLi - 15:58, Sunday 02 February 2020 (2016)Get code to link to this report
Polarization Maps on TAMA#1

Simon, Pengbo

We reconfigured the polarization system and did a test measurement on tama-size #1.It was place on the mount with the mark point to the top.

As can be seen from the result, both the maps show a smaller offset compared with the result measured before.

Also we can see some structure pattern from the bottom left corner to the top right corner.

Images attached to this report
2016_20200202075503_tama.jpg 2016_20200202075524_figure1.png 2016_20200202075535_figure2.png 2016_20200202075542_figure3.png 2016_20200202075547_figure4.png
Comments related to this report
SimonZeidler - 17:02, Monday 03 February 2020 (2020)

Actually, I think those results are not correct.

I re-calculated the S-pol map and got a much smoother distribution with those stripes being vanished almost completely.

As for P-pol, the map-data are unfortunately not reliable as the lock-in's sensitivity wasn't set correctly resulting in saturation on many occasions.