Andres R. & Jeff B. The regluing of the LL magnet/standoff was successfully completed. The repair jig has been removed from HAM5 and the AOSEMs have been remounted. They have been gross aligned. The suspension EQ stops have been released. NOTE: Found several Top Mass EQ stops touching the mass, (these stops were not put on for the magnet repair). When I released these stops there was a visible jump movement of the top mass. We will see if this is a contributor to the SR3 pitch misalignment. Particle Counts Before Work: In cleanroom cover on: 0.3 = 0, 0.5 = 0, 1.0 = 0 In chamber cover on: 0.3 = 17, 0.5 = 10, 1.0 = 2 During work: In chamber cover off: 0.3 = 46, 0.5 = 27, 0 After work: In cleanroom cover on: 0.3 = 0, 0.5 = 0, 1.0 = 0 In chamber cover on: did not get
It may have been forgotten that last week I had locked up all three SR3 stages so that HWS work could proceed and we could investigate pitch problem. I locked from top down so I am surprised to hear about a"jump" when unlocking