Reports until 16:36, Monday 13 July 2026
H1 SUS (SQZ, SUS)
rahul.kumar@LIGO.ORG - posted 16:36, Monday 13 July 2026 (91006)
HAM7 ZM5 (PSAMS) repair update - suspension taken out of chamber for PSAMS replacement work.

R Crouch, R Kumar

This morning we took out ZM5 suspension from HAM7 chamber for replacing the broken PSAMS unit. Before removing  ZM5 we marked the current position of it on the ISI table using a machinist square - see picture attached for reference.

We then placed ZM5 on the table near the chamber and carefully removed the bottom PSAMS units (after removing the mighty mouse cable) - see reference picture

The replacement PSAMS shipped to us from CIT and tested at LHO (see alog 91005) was then prepared for installation into ZM5 cage - see two pictures for reference.

Tomorrow (Tuesday), our plan is to insert the wires and suspend the entire chain, balance it before moving it back into HAM7. 

Images attached to this report