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Reports until 17:42, Friday 27 March 2026
H1 IOO (ISC)
jennifer.wright@LIGO.ORG - posted 17:42, Friday 27 March 2026 - last comment - 17:44, Friday 27 March 2026(89680)
Re-aligned JAC IOT1 table with HAM1 in air

Jennie W, Keita, Betsy, Jason,

 

Betsy and Jason rolled up IOT1 this afternoon and Keita tweaked the alignment from the top periscope mirror to the DCPDs with the PSL output at 2W. He also re-aligned the trigger PD.

We can now lock JAC in air with the double door cover so we can have the light exiting the chamber but most of the door covered above and below where the beam exits.

I had to run the 'normalise signals guardian state after we closed the table and turned the light off, probably because the signal on REFL PD changed.

We left the light pipe closed and both doors covered at the end of the day.

NB: I accidentally pinged the HAM1 -Y side large table beam dump plate (the one that would catch the scatter from the JAC REFL viewport) with one of the small paper clips we use to hold the two door covers to each other. I will wipe this down tomorrow.

Comments related to this report
jennifer.wright@LIGO.ORG - 17:44, Friday 27 March 2026 (89681)

I turned the power down to 100mW at the end of the day using the rotation stage.

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