J. Kissel

Standard health checks on BSC1 / BSC3 suspensions today (H1SUSITMX / H1SUSITMY) as we prepare to close out. All suspensions pass their tests. We're OK for doors.


/ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ITMX/Common/Data/
    2018-05-04_H1SUSITMX_AllStages_OSEM_ASDs.xml

/ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ITMX/SAGM0/Data/
    2018-05-04_2129_H1SUSITMX_M0_WhiteNoise_L_0p01to50Hz.xml
    2018-05-04_2129_H1SUSITMX_M0_WhiteNoise_P_0p01to50Hz.xml
    2018-05-04_2129_H1SUSITMX_M0_WhiteNoise_R_0p01to50Hz.xml
    2018-05-04_2129_H1SUSITMX_M0_WhiteNoise_T_0p01to50Hz.xml
    2018-05-04_2129_H1SUSITMX_M0_WhiteNoise_V_0p01to50Hz.xml
    2018-05-04_2129_H1SUSITMX_M0_WhiteNoise_Y_0p01to50Hz.xml

/ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ITMX/SAGR0/Data/
    2018-05-04_2156_H1SUSITMX_R0_WhiteNoise_L_0p02to50Hz.xml
    2018-05-04_2156_H1SUSITMX_R0_WhiteNoise_P_0p02to50Hz.xml
    2018-05-04_2156_H1SUSITMX_R0_WhiteNoise_R_0p02to50Hz.xml
    2018-05-04_2156_H1SUSITMX_R0_WhiteNoise_T_0p02to50Hz.xml
    2018-05-04_2156_H1SUSITMX_R0_WhiteNoise_V_0p02to50Hz.xml
    2018-05-04_2156_H1SUSITMX_R0_WhiteNoise_Y_0p02to50Hz.xml

/ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ITMY/SAGM0/Data/
    2018-05-04_H1SUSITMY_AllStages_OSEM_ASDs.xml

/ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ITMY/SAGM0/Data/
    2018-05-04_2105_H1SUSITMY_M0_Mono_WhiteNoise_L_0p02to50Hz.xml
    2018-05-04_2105_H1SUSITMY_M0_Mono_WhiteNoise_P_0p02to50Hz.xml
    2018-05-04_2105_H1SUSITMY_M0_Mono_WhiteNoise_R_0p02to50Hz.xml
    2018-05-04_2105_H1SUSITMY_M0_Mono_WhiteNoise_T_0p02to50Hz.xml
    2018-05-04_2105_H1SUSITMY_M0_Mono_WhiteNoise_V_0p02to50Hz.xml
    2018-05-04_2105_H1SUSITMY_M0_Mono_WhiteNoise_Y_0p02to50Hz.xml

/ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ITMY/SAGR0/Data/
    2018-05-04_2130_H1SUSITMY_R0_L_WhiteNoise_0p02to50Hz.xml
    2018-05-04_2130_H1SUSITMY_R0_P_WhiteNoise_0p02to50Hz.xml
    2018-05-04_2130_H1SUSITMY_R0_R_WhiteNoise_0p02to50Hz.xml
    2018-05-04_2130_H1SUSITMY_R0_T_WhiteNoise_0p02to50Hz.xml
    2018-05-04_2130_H1SUSITMY_R0_V_WhiteNoise_0p02to50Hz.xml
    2018-05-04_2130_H1SUSITMY_R0_Y_WhiteNoise_0p02to50Hz.xml


I attach screenshots of the ASDs of all OSEMs, that -- although hairy, don't show egregious signs of ground loops (regular combs and a highly elevated, high-frequency noise floor).
I also attach a smattering of screenshots of the transfer functions, just to visual prove that all looks good.
I'll wait until we pump back down before taking the nominal 0.01 Hz resolution TFs.

Notes: 
- ITMX R0 has had large vertical and pitch offsets in place when I took over from Betsy. We believe these are incorrect settings relics, as we've proven several times that they're no longer needed after the corner station temperature increased after a long cold 2016-2017 winter (see LHO aLOGs 36230, LHO aLOG 36335). Besides, we've also completely de-installed and re-installed that chain in October 2017 (see, among others, LHO aLOG 38873). 
- Similarly, Betsy actively attacked rubbing items on ITMY during this vent (mentioned briefly in LHO aLOG 41849). Thus, I removed the ~50k vertical offset that had been in place on the main chain -- which we'd recently identified was still needed (LHO aLOG 40789), and the chain appears clear of rubbing. We'll see what happens once we pump down!