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VIS (EX)
kouseki.miyo - 17:39 Thursday 15 July 2021 (17540) Print this report
EX is available again

Ushiba, Miyo
According to Takahashi-san, the drift of the IP on the EX reported in Klog17533 was caused by changing the corrugated tube jig on klog17506, so I fixed the drift using the fishing rod. Additionally, according to Ushiba-san, the payload was hitting the EQ stop because of the drift of the IP. (I'll have to remember to offload properly in the future..)

After that, I used Guardian to request ALIGNED, but the Yaw of Payload was also drifted, so I fixed it with BF's pico motor. I moved it to about -4000 counts. Now the OpLev beam is center of QPD.

By the way, there was a bug that DC control of OpLev in MN's PIT did not work in Guardian, so I fixed it. After that, ETMX can be aligned by using guardian. 

Comments to this report:
kouseki.miyo - 12:42 Friday 16 July 2021 (17555) Print this report

Because the reflection green beam was not at the POP PD named K1:ALS-X_ARM_REFL_OUT16, I modified the oplev setpoint so that the POP PD signal was maximized by sweeping the MN_APTICALIGN. now the reflection beam is at the POP PD.

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