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IOO (IMC)
masayuki.nakano - 18:45 Tuesday 11 July 2017 (3076) Print this report
Over night lock

We tried to optimize the control servo of IMC last week, and last night IMC has locked for more than 15 hours!

The attached plot is CH1:IMC-REFL-DC signal (0.4: unlocked, 0.2: locked), Ch2: AOM control signal(count), Ch3:suspension control signal(count).

*The drift of refl dc signal might because of misalginments of mirrors, and the short term osilattion is because of the room temerature fluctuation.
*The suspension range seems enough in the sense of the tidal motion.
*The mysterious noise seen during iKAGRA operation did not appear at all.

The optimization work of the IMC loop during last week will be posted soon.

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