KAGRA Logbook

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AOS (General)

naoatsu.hirata - 20:14 Wednesday 18 May 2022 (20783)

PRM Target

With Yano-san and Satou-san,

We aligned PRM targets. Both AR side and HR side.

1. Vertical laser leveler was aligned with PRM scratch line and PR2 target.

2. Holizontal laser leveler was set with center of PRM flange.(Note that PRM mirror is aligned with "center of flange", not "design height". 16741)

3. Aligned AR side Target with laser leveler.

4. Aligned HR side Target with laser leveler.

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Comments to this report:

tomotada.akutsu - 8:56 Thursday 19 May 2022 (20786)

Let me confirm one thing: as for the horizontal line, what is the relation of this laser level beam (which seemed aligned with the flange aperture center accroding to your klog entry) and the scratch on the RM?

naoatsu.hirata - 16:11 Thursday 19 May 2022 (20798)

The Scratch line of PRM recoilmass was aligned with same position which we used this time. GAS nominal is here. (Please see attached picture.)

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