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MIF (General)
hirose.chiaki - 20:56 Thursday 28 May 2026 (36959) Print this report
Supplied voltage manually to the PZT of the GreenX and GreenY fibre inputs in order to perform the initial alignment

[Tanaka, Yokozawa, Hirose]

To perform the initial alignment, it is necessary to use GreenX and GreenY. 
Currently, as the IOO1 control is under maintenance (klog36952), the PZT voltage cannot be remotely input at k1:ALSFIB under the k1:IOO0 control.
Therefore, we have manually set it to 75V. (Fig.1) If IOO1 recovers, it will be necessary to manually reset it to 0 again.

PZTs adjusted on PSL table at this time: Gr M24, Gr M25(woofer for FIBX_locking), Gr M8(tweeter for FIBX_locking), Gr M20, Gr M21(woofer for FIBY_locking), Gr M19(tweeter for FIBY_lock); To adjust the phase of the input light to the fiber for sending GreenX and GreenY to POP and POS, or to adjust the alignment (optical axis shift).

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