Reports until 11:17, Tuesday 28 July 2026
H1 SPI (PSL, SPI)
jason.oberling@LIGO.ORG - posted 11:17, Tuesday 28 July 2026 (91287)
SPI Shutter Cable Swap (WP 13464)

J. Oberling, R. Short, T. Shaffer

This morning we swapped the temporary SPI shutter cable, for the shutter in the SPI pickoff path on the PSL table, with the permanent one.  Once the old cable was removed we fed it out of the PSL enclosure wall penetration to TJ, who then fed the permanent cable into the PSL enclosure for us (thank you, TJ!).  The cable was secured in the same was as the temporary cable was, see attached pictures.  We tried to physically move the cable into the ALS beam path and were unable to do so; at rest the cable is ~2.5" from the ALS path and the closest we could get it was ~2", so the cable is well secured and unable to drift into the ALS path.  This cable had been successfully tested with a spare shutter before installation, but due to the ongoing CDS upgrade we were unable to test it with the installed shutter; this will be done once everything is back up and running.  This completes LHO WP 13464.

Images attached to this report