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Reports until 16:49, Monday 18 May 2026
H1 SUS (EPO, SUS)
ibrahim.abouelfettouh@LIGO.ORG - posted 16:49, Monday 18 May 2026 (90272)
BBSS secured and aligned on ISI

Ibrahim, Betsy, Randy, Jason, Ryan C

Today, we lifted the BBSS into the ISI. We then secured and aligned it with the help of IAS (Ryan C and Jason - seperate alog which will be linked later).

We used the aluma lift and dog clamps with the help of teflon pads to move the strucutre about the lift within dog clamp boundaries to align it to the ceiling to the model.

The alignment was done by touching the FARO SMR to the corners of the top of the lower structure to determine if translation or rotations were needed on the structure.

We also inspected BBS01 and found some particulate on the center of S1. Thankfully, it blew off using the N2 Top Gun.

Particle counts were checked in cleanroom periodically and were below 50 consistently.

See pictures.

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