more vacuum leak checking

[John, Gerardo, Chandra]

John wanted to spray some helium for himself, so we spun the x-beam manifold back up and sprayed all BSC7 conflats again, in addition to IP6 isolation GV and GV4 triple flange. He sprayed He at a KF connection at the leak checker and found a e-9 Torr-L/s range leak, which could have been what Kyle and I detected last week while testing GV7.

John noticed the BSC7 annulus ion pump's reading on front display was not clear i.e. the green LED lights were fading into 6 mA + range rather than clear-cut lit vs. non lit. He tapped on the pump and power cycled the controller a few times. It seems to be reading clearly now at 2 mA. We thought if there was an internal o-ring leak and the annulus ion pump wasn't working properly, that annulus space could be the source of pressure rise in x-beam manifold. We connected an aux turbo cart to that pump and accidentally partially vented the annulus space and then pumped it back down. No change in volume pressure though, which leads us to believe that there is no internal o-ring leak. The AIP is pumping on its own again at 2 mA.

We left the x-beam manifold turbo running and valved out for the night. IP6 is valved back in. While IP6 was valved out during leak checking, its power supply read 172 uA. When valved in, it reads 520 mA. IP5 on y-beam manifold reads about 90 uA (valved in), so we still may conclude that the reason for the pressure rise in x-beam manifold when isolated compared to y-beam manifold is due to difference in IP pumping speed. When IP6 is valved out, we expect it to read even better than IP5 valved in. One thing we didn't check is the IP flange above the gate valve. We should leak check that flange while the IP is valved in. We've sprayed it a few times now, but we always keep the IP valved out during leak checking. When IP is reopened we detect some He in -9 range (no surprise), but.....

h1guardian0 reboot

TJ, Patrick, Dave:

at 15:33 PDT we rebooted h1guardian0 after getting sign-off from all subsystems. On restart, TJ noted CA connection errors with the Slow Controls Beckhoff machine h1ecatx1. Some workstations were apparently connecting to this IOC and other were not. Patrick noted that his CDS overview was connecting, but it was showing the last update times of 19:45:34 PDT Sunday 5/14 on all three PLCs, so we think this is when the IOC stopped updating and accepting any new channels.

The reason for the h1guardian0 reboot is two-fold, recoup RAM and lower processing times (load averages had been hitting 50 recently).

restarted h1ecatx1

IOC crashed (see attached screenshot).

FRS 5270 updated.

Ops Day Shift Summary

restarted IOC for weather station at end Y

Lost connection last Friday during Robert's work.

CP3, CP4 Autofill 2017_05_15

Starting CP3 fill. LLCV enabled. LLCV set to manual control. LLCV set to 50% open. Fill completed in 79 seconds. TC B did not register fill. LLCV set back to 21.0% open.
Starting CP4 fill. LLCV enabled. LLCV set to manual control. LLCV set to 70% open. Fill completed in 191 seconds. TC A did not register fill. LLCV set back to 45.0% open.

h1nds1 daqd restarted, was not serving data

Carlos, Dave:

[11:23 PDT] we restarted the daqd process on h1nds1, it had become unresponsive.

end Y FMCS channels migrated to BACNet IOC

WP 6577

autoBurt.req file and medm screens updated. No change in channel names or addition or removal of channels.

CDS O2 Restart Report: Friday 5th - Sunday 14th May 2017

model restarts logged for Fri 05/May/2017 - Sun 14/May/2017 No restarts reported

PSL Weekly

Laser Status:
SysStat is good
Front End Power is 34.04W (should be around 30 W)
HPO Output Power is 169.5W
Front End Watch is GREEN
HPO Watch is GREEN

PMC:
It has been locked 3 days, 21 hr 7 minutes (should be days/weeks)
Reflected power = 17.74Watts
Transmitted power = 63.34Watts
PowerSum = 81.09Watts.

FSS:
It has been locked for 3 days 21 hr and 7 min (should be days/weeks)
TPD[V] = 3.606V (min 0.9V)

ISS:
The diffracted power is around 3.0% (should be 3-5%)
Last saturation event was 3 days 21 hours and 7 minutes ago (should be days/weeks)

Possible Issues:
PMC reflected power is high

 

09:30 Meeting Minutes

VAC: At 2x10-6; On turbo pumps until end of week. Gate Valves may open early next week.
HWS: Team is working on alignment(s).
ITMX: Need to run TFs after HEPI is unlocked.
Cheryl : In the LVEA taking pictures of HAM2/3.
Robert: Looking at the Swiss cheese baffle and noise hunting.
Apollo : At End-X working on HVAC controls
Patrick : Moving FMC channels for End-Y HVAC controls. 

LVEA Transitioned to Laser Safe

   Cheryl transitioned LVEA to Laser Safe, for WP #6624.  

PSL Weekly Report - 10 Day Trends FAMIS #6148

Plots reflect maintenance on chiller lines in the enclosure last week. Other than that, nothing else is out of sorts.

Ops Day Shift Transition

1915 hrs. local -> Kyle on site

I expect to be here between 60 and 90 minutes and in VPW, LVEA and my office.  I will make a comment to this entry when I leave.

It is horribly painful to make this aLOG entry from the control room as there is a constantly repeating voice simulation alarm "gamma ray Burst...gamma ray burst...ga"!  HELP! I do anything - just make it STOP - PLEASE, I"m begging you!

The Vertex MTP and scroll are quiet and happy.  As found, the LVEA lights were on so I turned them off as I left.  Much to my surprise the main entrance door is properly locked!  The included plots show that the HAM11 AIP has blown up again.  Both the pump and controller have been replaced within the past 14 months or so. 

2150 hrs. local -> Kyle leaving site now.

I acknowledge the alarm this morning at ~5:03.

Swiss Cheese Baffle Damping Complete

Damping completed and flanges back on. No hitches. Three viton corks are in, preliminary laser vibrometry looks good. More later.

Gerardo, Vinny, Robert

Pointer to the follow-up log entry: https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=36147