Reports until 16:54, Thursday 20 September 2012
H1 ISC
keita.kawabe@LIGO.ORG - posted 16:54, Thursday 20 September 2012 - last comment - 06:51, Friday 21 September 2012(4261)
HAM3 POP IR QPD sled completed

We tuned the QPD sled Gouy telescope using the modemaster and a fiber coupled source. Basically copied LLO, however the difference in source parameter means that some of the things are different. Details about the source and the tuning parameters etc. will be detailed in T1200433, which is yet to be written.

Then we have centered the QPDs using hand held QPD LCD readout box (D1102092). QPD cables were clamped down on the sled.

(Turned out that the hand held box had a pin compatibility issue. I, Richard McCarthy and Rich Abbott talked, and Richard made a patch job so I can go on. Rich is going to modify the rest of the units at Caltech.)

We've wrapped it in a foil and put it in a big ameristat bag.

One caveat, though, is that it turned out that we don't have a suitable black glasses that fits the J-clamp for 1-inch optics (at least in the lab). Also, rectangular black glasses that are supposed to be installed just outside of the sled were too thick and didn't fit the V holders.

We will be able to install them when we go in to HAM3 for real alignment in the future, not this time.

Comments related to this report
corey.gray@LIGO.ORG - 06:51, Friday 21 September 2012 (4263)

Attached are a few photos from the build.  ALL photos from work are in ResourceSpace, here.

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