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Reports until 12:56, Tuesday 15 October 2013
H1 ISC
corey.gray@LIGO.ORG - posted 12:56, Tuesday 15 October 2013 (8110)
TMS In-Chamber Cabling Work

(Corey G, Jim W)

With a window of opportunity to work in BSC9, I hopped in chamber and Jim worked from up top.  Following the Cabling document (D1300007), Flange layout (D1003081), and using my BSC 9 Cable Table (alog), I went about checking & connectiong some cables to the chamber.  While doing this found a few issues:

1)  TMS SUS cables needed to be "turned around".  The end with "ears" was originally on flange side, and the cables could not be connected with these large ears on.  Luckily, fixing this required just flipping the cables around.  Confirmed that we now have real signals on the TMS medm.

2)  While connecting the Beam Diverter cable (D1000223 s/n S1202656) to the flange, I appear to have galled one of its set screws.  The cable is well seated and the other set screw is fine, but one of the set screws feels pretty bad. 

3)  The ISC QPDs are extremely important, and one thing I DID NOT want to do is fry these guys buy connecting them to the wrong flange.  So, I did not plug the QPDs (I later found out that the dirty-side cable aren't connected, so I could have connected them).  One other issue came up here.  Each QPD cable shares flange with either a Beam Diverter or Picomotor.  We are pondering the idea of whether we can put BOTH QPDs on one flange and the Beam Diverter/Picomotor on the other one.  This could help prevent us from accidentally frying a QPD.  We're still waiting on this per an email Keita sent out to all interested parties. 

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