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H1 SUS

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betsy.weaver@LIGO.ORG - posted 12:18, Tuesday 15 July 2014 - last comment - 14:59, Tuesday 15 July 2014(12757)

SR3 lower stage OSEMs aligned

Jeff and Andres spent the morning aligning the SR3 2 lower stage OSEMs.

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jeffrey.bartlett@LIGO.ORG - 14:59, Tuesday 15 July 2014 (12765)

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Andres R. & Jeff B.
   After completing the magnet repair on SR3, we recentered and realigned the AOSEMs on the Intermediate and Test Masses. The AOSEMs have been adjusted to 50% light. No problems were encountered during alignment or centering.
 
   Left SR3 suspended with the EQ stops set close to their final positions.   

Particle Counts: 
Before Work
In cleanroom, Cover on: 0.3 = 10, 0.5 = 8, 1.0 = 2
In chamber, Cover on: 0.3 = 346, 0.5 = 202, 1.0 = 46
In chamber, Cover 1/2 off after 2 Minutes: 0.3 = 107, 0.5 = 59, 1.0 = 12   

During Work
In chamber, Cove 1/2 off: 0.3 = 30, 0.5 = 17. 1.0 = 9  

After Work
In cleanroom, Cover on: 0.3 = 0, 0.5 = 0, 1.0 = 0
In chamber, Cover on: 0.3 = 8, 0.5 = 4, 1.0 = 0