Reports until 13:57, Tuesday 28 October 2025
H1 PSL (ISC, PSL)
keita.kawabe@LIGO.ORG - posted 13:57, Tuesday 28 October 2025 - last comment - 15:59, Wednesday 29 October 2025(87803)
ISS array S1202965 was put in storage (Rahul, Keita)

Related: https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=87729

We disconnected everything from the ISS array installation spare unit S1202965 and stored it in the ISS array cabinet in the vac prep area next to the OSB optics lab. See the first 8 pictures.

The  incomplete spare ISS array assy originally removed from LLO HAM2 (S1202966) was moved to a shelf under the work table right next to the clean loom in the optics lab (see the 9th picture). Note that one PD was pulled from that and was transplanted to our installation spare S1202965.

Metadata for both 2965 and 2966 were updated.

ISS second array parts inventory https://dcc.ligo.org/E2500191 is being updated.

Images attached to this report
Comments related to this report
keita.kawabe@LIGO.ORG - 15:59, Wednesday 29 October 2025 (87835)

Rahul and I cleared the optics table so Josh and Jeff can do their SPI work.

Optics mounts and things were put in the blue cabinet. Mirrors, PBS and lenses were put back into labeled containers and in the cabinet in front of the door to the change area.

Butterfly module laser, the LD driver and TEC controller were put back in the gray plastic bin. There was no space in the cabinets/shelves so it's put under the optics table closer to the flow bench area.

Single channel PZT drivers were put back in the cabinet on the northwest wall in the optics lab. Two channel PZT driver, oscilloscopes, a function generator and DC supplies went back to the EE shop.

OnTrack QPD preamp, its dedicated power transformer, LIGO's LCD interface for QPD and its power supply were put in a corner of one of the bottom shelf of the cabinet on the southwest wall.

Thorlabs M2 profiler and a special lens kit for that were given to Tony who stored them in the Pcal lab.

aLIGO PSL ISS PD array spare parts inventory E2500191 was updated.