Displaying report 1-1 of 1.
Reports until 18:00, Thursday 17 July 2014
H1 SUS (SEI, SUS)
matthew.heintze@LIGO.ORG - posted 18:00, Thursday 17 July 2014 - last comment - 18:17, Thursday 17 July 2014(12823)
Output arm suspension status

Prior to balancing work beginning on HAM5, I locked the SRM and SR3 intermediate and bottom stage masses. I also tried to dress the cables as best that I could. Unfortunately the bolt holding the peek cable clamp feels galled so cant do up clamp well, so the cables are kind of just hooked onto the clamp. its not at all pretty, but hopefully will be fine. If had more time would of liked it to be better.

 

The SEI guys balanced HAM 5 and I then went and unlocked SRM and SR3. Hugh then unlocked the ISI and pulled the covers off the ISI  for testing to begin

 

For HAM4 balancing we decided to leave SR2 unlocked because we didnt think the ISI would have to have much adjustment, if any at all. So it was left unlocked during balancing, the ISI balance checked and the covers are now pulled back from the ISI for testing to begin

 

Thus SR2, SRM, and SR3 should all be unlocked....and hopefully free. I have not unlocked them into their "final state" as they need to be locked up again so that they can be first contacted

Comments related to this report
arnaud.pele@LIGO.ORG - 18:17, Thursday 17 July 2014 (12825)
HAM4/5 suspensions were checked for rubbing with a dtt tf in pitch (top mass) and compared with previous measurements. Results are in the pdf attached, they all seem to be freely suspended. 

dtt files were checked in the svn under :
SusSVN/sus/trunk/HSTS/H1/SR2/SAGM1/Data/2014-07-16_1800_H1SUSSR2_M1_WhiteNoise_P_0p1to50Hz.xml
SusSVN/sus/trunk/HSTS/H1/SRM/SAGM1/Data/2014_07_16_H1SUSSRM_M1_WhiteNoise_P_0p01to50Hz.xml
SusSVN/sus/trunk/HLTS/H1/SR3/SAGM1/Data/2014_07_16_1800_H1SUSSR3_WhiteNoise_P_0p1to50Hz.xml

Non-image files attached to this comment
Displaying report 1-1 of 1.