Sheila, Hang

AS port:

Gerardo, Chandra

Valves are open on GV-3 and GV-4 gate annuli and being pumped on annuli IPs.
GV-3 = 3 mA
GV-4 = 2 mA

X & Y beam manifold turbo pumps felt warm so we turned cooling water back on.

Diagonal: 105 Torr
X: 1.69e-7 Torr
Y: 1.65e-7 Torr

            Transition Summary:
Title:  03/16/2016, Evening Shift 23:00 – 07:00 (16:00 – 00:00) All times in UTC (PT)
	
State of H1: IFO unlocked. Planned engineering 

Commissioning: No commissioning work planned for tonight

Outgoing Operator: Ed

TITLE: 03/16 day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: Jeff
SHIFT SUMMARY:'
LOG:
14:00 Chris working in fan room (#5) in corner station. (morning work)
15:30 Gerardo to mechanical room to start his "rounds"
16:18 Fil going out to shutter PSL light pipe
16:19 Manny and Lesly going to finish up cabling work around BSC2
17:11 Gerardo back
17:50 Joe into LVEA to check first aid kits
18:11 Joe out of the LVEA
18:21 Betsy beginning charge measurements on end station test masses
20:20 Fil and JoeD out to LVEA
20:30 Joe out
21:15 Gerardo and Patrick out to End stations
21:16 Carlos out to LVEA
21:25 Fil and Carlos out of LVEA
21:26 FIl opening the shutter on the light pipe
21:31 Betsy out to the LVEA

21:36 Filiberto opened the Shutter on the light pipe

John, Gerardo, Chandra

Rough pump down on diagonal. We borrowed the control cable from Ymid turbo pump station to run QDP80 in remote mode. 

Current pressure on BCS4: 383 Torr

No issues outside of the ridiculous cable nests in the area.

I spent time staighting up the Optical Lever cabling where grouting will happen Thursday or Friday.

15:30 UTC FAMIS 3589

(Borja Sorazu, Alan Cumming, Giles Hammond)

This entry is an informative summary of some of the work we are doing/planning to do at Glasgow related to the monolithic suspensions and their violin modes R&D:

1) Identify actual fibre profiles of the installed fibres with actual masses.

2) Model aLIGO 'real' final stage suspension (with real fibre profiles) in ANSYS, to learn about the violin frequencies distribution and see how that can inform on identifying the higher order harmonics and their associated masses. Notice that only fundamental and fist harmonics are partially identified with actual test masses.

3) Use the model to estimate D factor for first 5 or 6 harmonics, and the energy distribution along the fibre length taking into account full fibre shape including necks and hopefully welds.

4) Use these energy ratios to weight the material loss factor equations. In this case, the material loss factor equations are used independently for each segment along the length of the fibre (therefore taking into account correctly the full fibre shape), and summed together and weighted by the energy ratio of each segment of the fibre, to give the full material loss of the fibre. Most probably we are talking about 500-1000 segments or so along each fibre's length.

5) The material loss factor equations we have used previously have used conservative estimates of parameters such as surface and weld loss, and subsequent measurements here in Glasgow have shown that the losses could be better than this, so we can give a range of possible losses (and hence noise spectra) using these and the FEA analysis, for the lower glass stage of the suspension, and compare these values with the measured Q's of the fundamental and higher harmonics of the violin modes. This information may help into understand if the low frequency noise has any thermal noise source.

16:20 Filiberto has locked and tagged the PSL Light Pipe

Laser Status:
SysStat is good
Front End power is 31.72W (should be around 30 W)
Frontend Watch is GREEN
HPO Watch is RED

PMC:
It has been locked 1.0 days, 19.0 hr 34.0 minutes (should be days/weeks)
Reflected power is 3.035Watts and PowerSum = 24.92Watts.

FSS:
It has been locked for 1.0 days 0.0 h and 4.0 min (should be days/weeks)
TPD[V] = 1.501V (min 0.9V)

ISS:
The diffracted power is around 9.648% (should be 5-9%)
Last saturation event was 0.0 days 16.0 hours and 33.0 minutes ago (should be days/weeks)

Please refer further, in depth, analysis of PSL trends to Jason, Peter or Rick.

Grouting of the remainder of the HEPI piers, transmitter and receiver pylons in the LVEA began on Monday morning by Reiboldt and Associates. The grouting has consumed more product than was originally expected and we have used up all that we had. I have ordered more grout and that should be onsite today, meanwhile, the grout crew will be out today. 

Progress to date includes, all of the HEPI piers on HAM 5 & 6, the large carbon fiber leaner on the south side of HAM 4, and the large stainless steel leaner pylon on X-Arm. Remaining items to grout in the LVEA include, 5 of the small transmitter pylons, and 1 each of the large carbon fiber and stainless steel leaner pylon. The plan is to finish these items in the LVEA tomorrow and move to the End stations afterwards.

TITLE: 03/16 day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
    Wind Avg: 2 mph
    Primary useism: 0.03 μm/s
    Secondary useism: 0.26 μm/s 
QUICK SUMMARY:LVEA is LASER SAFE

Yesterday afternoon I began the disassembly of Supply Fan 5 to investigate a very noisy bearing. I informed the control room that I was going to increase the flow on SF-6 from 
~6200 CFM to ~ 8500 CFM to compensate for the reduced air flow of one fan being down. I will continue with disassembly today and if all parts are readily available, I hope to have the fan back up and running by the end of this week. 

John, Chandra

We isolated the beam manifold from QDP80 and are now backing turbo with scroll only.
Control cable switched to scroll box. 
Safety valve set point on both X and Y pump stations is 5e-2 Torr.

X: 5.94e-7 Torr
Y: 1.82e-6 Torr

John, Chandra

Started turbo on Y beam manifold with inlet pressure at 1 Torr and pump water cooling ON. 

X: 8.0e-7 Torr
Y: 4.9e-1 Torr

John, Gerardo, Chandra

Yesterday Kyle and Gerardo noticed the current on annulus IP on GV-5 was high (off scale). Today we noticed it was at 2 mA. We tapped on the vacuum piping around the pump and the current rose. Then we opened the valve to the annulus of GV-5's gate. The current rose to 6 mA and then quickly fell to 2 mA. Closed valve again to isolate GV-5 gate annulus. Now the IP is reading 1 mA.

 
Activity Log: All Times in UTC (PT)

23:00 (16:00) Take over from Ed


End of Shift Summary:

03/15/2016, Evening Shift 23:00 – 07:00 (16:00 – 00:00) All times in UTC (PT)

Support: N/A               
 
Incoming Operator: N/A

Shift Detail Summary:  Some commissioning work going on; does not need Ops support.  

John, Chandra

Now backing turbo pump on Xarm spool with scroll pump. 
Closed QDP80 valve on Xarm spool pump station. 
Closed vent/purge valves at both X & Y spools.
Closed valves on Inficon gauges (PT-170 and PT-180).

Pressure on PT-170 reading 1.56e-6 Torr.

I notice that the TCS Y laser is off and reporting a flow alarm.  The flow meter shows that the chiller is currently running.  I don't think this laser was in use but was running and it would be better not to leave it in this alarm state.  Either the power supply should be turned off if the laser is not needed, or it should be reset by turning the controller key on/off and pressing the gate button on the controller.