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Reports until 14:42, Wednesday 15 January 2014
H1 SUS
betsy.weaver@LIGO.ORG - posted 14:42, Wednesday 15 January 2014 (9298)
ETMy Fiber Mode Measurements (again) and buld status

After spending all day measuring the library of fiber modes on the ETMy monolithic, the saved data from the spectrum analyzer was corrupted.  Giles hunted down the cryptic hint which was apparently needed in order to not loose the data and we remeasured (and resaved) all of the data today.  He'll process the data and post a more detailed entry, but in a nutshell all 4 of the fiber violin modes fell within 1.5Hz of each other.  The tol is ~+/- 2.5 Hz.

 

Fiber Guards were added and it was left hanging as a single pendulum.

 

Meanwhile, we're working towards reattaching the rebuilt upper structure on the ISI/cartridge.

 

*  Interesting note - we've found 3 dead flies on the floor in the welding cleanroom (1 very near the monolithic yesterday morning, 1 a few feet away from the mono, and the other in the cartridge cleanroom adjascent).

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