For Optical Lever acceptance review, this data was requested.  This set will also be included in the testing and commissioning document for optical levers, T1300563.

Figure 1 shows the dark noise spectra in Volts/Hz^1/2, this is taken as individual segments at the ADC and then converted from counts to volts in DTT.

Figure 2 shows the transfer function between the OSEMS of the M0 stage and the L2 stage, this is using an excitation on the M0 stage of 200 counts uniformly at broadband frequencies.

Figure 3 shows the ITMY drift for 24 hours in pitch and yaw in units of microradians.  We see that over the course of 24 hours, pitch drifts ~2urad and yaw drifts ~1.5urad

Mark L., Eddy and I removed four LOS from the Optics Lab today. Three were headed for recycling per Michael Landry and one was packed into a crate for shipping to Steve Penn. We put shipping requests on the iLIGO optics cases headed for CIT: this included the two ETMs destined for KAGRA per Eiichi's request. Mark and Eddy carted everything ready for shipment to the LSB so Terry can work on the logistics. There were two cases full of SOS destined for MIT: these were hauled to X Mid Optics Lab for storage until MIT is ready to receive them. 

Three iLIGO large optics remain on-site: they are stored in cake tins in an Optics Lab cupboard. We will ship these to CIT when we get some cases back.

We assisted Jodi with removal of suspensions from the optics lab, some for shipment and some for recycle. 
Welded the tabs for the bread board on the leaner pier at End Y for Rick S.
Tyler worked in the machine shop on parts for Betsy.

For the ISIs, I updated the common model, edited the .ini list, localy rerouted the STS-2 paths, compiled, installed and restarted the models.
For the HEPIs, I localy rerouted the STS-2 paths, compiled, installed and restarted the models.

[Peter, Rick, Christina]

To have a look at the AOM double pass efficiency, we checked the RF power send to the AOM. It was 1.46W, which is too high. So we changed the attenution in front of the VCO from 9dB to 10dB (using an 8dB and a 2dB attenuator). That gave us 1.2W. 

Afterwards we optimized the alignment of the AOM and got a double pass efficiency of 72% (69.5mW to AOM, 59.5mW in single pass, 50.4mW after the EOM).

Because of realigning the AOM we had to optimize the alignment of the reference cavity and got 30mW transmitting with 50mW send into the cavity.

As a part of the HIFO wrap up, I moved all the matlab scripts and associated files for the HIFO Y noise budget from

 /opt/rtcds/userapps/release/als/h1/scripts/

to

 /ligo/svncommon/40mSVN/NB/aLIGO/HIFO/H1

They are now under the subversion control of 40m SVN and not the CDS user_apps.

GregG ThomasV BetsyW

Installed the TCS RHs onto the suspension cage, the cables are routed up the side.  Will put the final touches on the cable routing and do a continuity/resistance check tomorrow.

Last two Vertical Actuators attached.  Four Horizontals to go.

(Andres, Apollo crew, Cheryl, Corey, Jeff)

Upper Mass Rolled Out To Cartridge

Most of the day was prepping and actually moving this Assembly.  Because of the orientation and spacing out at the Test Stand, the plan is to roll the Genie with the Upper Mass back-end-first under the Cartridge.  To orient the Upper Mass on the Genie, the Upper Mass was rotated via lifting hardware at the Bosch Frame.  Then this afternoon, the Upper Mass was rolled under the Cartridge while keeping it under a clean room (this is from the TMS Lab, through receiving, cleaning room, and into the VEA under the Test Stand. 

Upper Mass Cleaned Before Roll Out

Before the big move, we performed a cleaning of the Assy.  We vacuumed & wiped with pre-soaked Alpha Wipes.

Vibration Absorber Interference

Time was running late, so we didn't attempt to clamp the Upper Mass to the ISI, but one thing we did notice was the NW Vibration Absorber on the Upper Mass Cage will interfere with the ISI's Stage-0.  We're going to talk about this with the SUS crew and see if this can be moved.

Cookie Cutter/Alignment Template (D1101050)

Not really sure where the error is on this, but to use this tool, we had to install it in a way where we did not utilize the counterbored holes (so perhaps the counterbores were cut on wrong side.  It still works, but it's just sad that there are un-used counterbores on this guy.

Site recovering from power spike during the weekend (storm related)

Sprague spraying along x-arm

0900 Christina and Peter re-starting PSL

930 Betsy working on BSC3

0930 Dave restarting all frontends.

1120 Pablo working in H2 enclosure

1400 Hugh working on Ham 6 HEPI

1430 Thomas and Greg doing Ring Heater install in LVEA

1500 RickS and Christina working on PSL

We started assembly of the work platform around BSC 3. With approval from Richard and Filiberto, we repositioned a rack that was located between BSC 2 & 3 containing SUS stuff and was impeding leg placement for the work platform.
We also assisted Cheryl and Cory with moving the cube for the TMS from the lab to the VEA at E X.
Tyler worked in the machine shop on parts for Betsy.

All the front end systems did indeed get rebooted yesterday at 18:20, only h1seib2 did not startup correctly. I noticed that the Dolphin IPC was not working in the MSR. I power cycled all Dolphin connected front ends plus the two Dolphin switches in the MSR. This resolved the IPC issues.

There does not appear to be a similar problem at EX. The LVEA test stand are showing problems, but we will be rebooting them soon as part of the RCG upgrade and no systems are being controlled by these systems at the moment.

The LDAS SATABOY disk RAID system came back online. I restarted h1fw0, it is writing frames again. The data gap for the h1fw0 system is:

Aug 25 18:24 - Aug 26 10:22

Reminder, h1fw1 ran throughout this event and lost no data. Jim made h1nds1 the default NDS.

Looking over the Pump Station ops I found EndX was not running; the other pump stations were fine.  The servo was on but output was maxed and pressure zero.  No response to remote manipulation.  Found VFD in OU3 fault and needing reset.  Restarted to normal running w/o issue.  Looking at the trends however, found this actually dropped at ~noon 21 Aug.  No alogged potential causal issues found.  This "Overvoltage--Running at Constant Speed" trip has occurred here before--will investigate.

[Peter, Christina]

We restarted the laser and found out that after the power outage the current limit of the HV units was set to 0 (I recall that is a known problem). We set it to 200mA and the laser locked immediately. The PSL came back without any other issues.

I turned it off for now and will service/replace 

The default NDS server has been changed to h1nds1, effective with new shells and programs started after 9:30 AM PDT.

Greg reports LSB is without power after an electrical storm passed through the region this evening. LDAS is subsequently down for the evening.

The CDS status is:

DAQ is still running. h1fw0 has no disk system (it is located in the LSB) but h1fw1 continues to write frames to the MSR RAID. I have turned off monit on h1fw0 to stop it constantly going through  a start/crash/restart cycle. The MEDM screens could not resolve h1dc0's epics channels. I verified that daqd was running on h1dc0 (has been since 21st of this month) and that CA clients on the H!FE LAN can see this IOC. So it appears to be an EPICS gateway issue. I restarted the h1fe-cds epics gateway on h1cdsegw0 and this cleared the problem. Now only h1fw0 is blank on the DAQ medm screens, as expected.

I verified that h1fw1 is writing full, second and minute trend files.

All the front ends seem to have riden out the storm (pun intended) except for h1seib2 (seismic BSC). It reports having been rebooted at 18:19 local time, and is apparently missing timing at its IO Chassis so no models are running (ADC and DAC cards are visible, so IO Chassis is powered up). With no IOP model running, I assume the DAC outputs are stable at zero volts and it is safe to leave this in this state overnight.

All vacuum controls systems are operational, and their medm snapshots are being updated on the CDS web page.

For future reference, open light values have been taken for ITMX currently at the test stand (QUADTST on medm)

M0F1 22745      1.319 -11372
M0F2 25209      1.190 -12604
M0F3 25497      1.177 -12748
M0LF 25276      1.187 -12638
M0RT 24820      1.209 -12410
M0SD 23964      1.252 -11982
R0F1 25057      1.197 -12529
R0F2 30488      0.984 -15244
R0F3 29015      1.034 -14507
R0LF 29178      1.028 -14589
R0RT 27580      1.088 -13790
R0SD 27366      1.096 -13683