(see WP #6377) 

Having not asked for permission, I am now asking for forgiveness!  It was my intention to shut down the temporary pump setup @ BSC8 at the end of maintenance today.  Instead, I have left the setup running. Obviously, we will shut it down if/when directed to do so.  As is, we have just this morning entered in to the "pressure region of interest" for our long-term gauge drift data collection.  The nature of the problem doesn't lend itself to 4 hours per week of data collecting.  

Recall that ON/OFF tests of this setup while in a locked "Low Noise" IFO state produced nothing of interest to the PEM folks just prior to the start of O2.  

Keita, Rana, Evan

After refocusing the HAM5 camera, we see in full lock that there are at least two ghost beams hitting the SRM composite mass. These ghost beams move when CPY (but not CPX) is moved.

The attached plots show the DARM spectrum for different CPY alignments. There is no obvious sweet spot, but perhaps we will find one by looking at some long-term DARM BLRMS.

This image shows the HAM5 camera with the nominal CPY alignment (-150 µrad in pitch, 0 µrad in yaw). The two bright, vertically aligned spots on the left-hand side are the CPY ghost beams.

Laser Status:
SysStat is good
Front End Power is 34.4W (should be around 30 W)
Front End Watch is GREEN
HPO Watch is GREEN
PMC:
It has been locked 0.0 days, 4.0 hr 49.0 minutes (should be days/weeks)
Reflected power is 13.54Watts and PowerSum = 72.45Watts.

FSS:
It has been locked for 0.0 days 1.0 hr and 18.0 min (should be days/weeks)
TPD[V] = 3.587V (min 0.9V)

ISS:
The diffracted power is around 4.966% (should be 5-9%)
Last saturation event was 0.0 days 4.0 hours and 49.0 minutes ago (should be days/weeks)

(Kyle, Gerardo)

Installed annulus ion pump hardware at the H2 input mode cleaner tube.  The entire system is ready to be pump down and turned on next maintenance day.

Notes about installation: we vented, the already vented annulus space, installed all hardware, pump, controller and managed to pump it down to 4.2x10^-05 torr, then maintenance period was over.

Items to complete next maintenance day: pump the system down, leak check and turn ion pump on.

J. Kissel

Continuing the schedule of roaming PCALX line. We'll run this line for one more day, so that we get two points at 4001.3 Hz with a 30 [W] IFO to check consistency between the two repeats of the schedule, and then shut off the line until further notice.


Frequency    Planned Amplitude        Planned Duration      Actual Amplitude    Start Time                 Stop Time                    Achieved Duration
(Hz)         (ct)                     (hh:mm)                   (ct)               (UTC)                    (UTC)                         (hh:mm)
---------------------------------------------------------------------------------------------------------------------------------------------------------
1001.3       35k                      02:00                   39322.0           Nov 28 2016 17:20:44 UTC  Nov 30 2016 17:16:00 UTC         days    @ 30 W  
1501.3       35k                      02:00                   39322.0           Nov 30 2016 17:27:00 UTC  Nov 30 2016 19:36:00 UTC         02:09   @ 30 W         
2001.3       35k                      02:00                   39322.0           Nov 30 2016 19:36:00 UTC  Nov 30 2016 22:07:00 UTC         02:31   @ 30 W
2501.3       35k                      05:00                   39322.0           Nov 30 2016 22:08:00 UTC  Dec 02 2016 20:16:00 UTC         days    @ 30 W
3001.3       35k                      05:00                   39322.0           Dec 02 2016 20:17:00 UTC  Dec 05 2016 16:58:57 UTC         days    @ 30 W
3501.3       35k                      05:00                   39322.0           Dec 05 2016 16:58:57 UTC  Dec 06 2016 21:09:56 UTC         ~15:00  @ 30 W
4001.3       40k                      10:00                   39322.0           Dec 06 2016 21:09:56 UTC
4301.3       40k                      10:00                   39322.0                
4501.3       40k                      10:00                   39322.0           
4801.3       40k                      10:00                   39222.0           
5001.3       40k                      10:00                   39222.0         

Frequency    Planned Amplitude        Planned Duration      Actual Amplitude    Start Time                 Stop Time                    Achieved Duration
(Hz)         (ct)                     (hh:mm)                   (ct)               (UTC)                    (UTC)                         (hh:mm)
---------------------------------------------------------------------------------------------------------------------------------------------------------
1001.3       35k                      02:00                   39322.0           Nov 11 2016 21:37:50 UTC    Nov 12 2016 03:28:21 UTC      ~several hours @ 25 W
1501.3       35k                      02:00                   39322.0           Oct 24 2016 15:26:57 UTC    Oct 31 2016 15:44:29 UTC      ~week @ 25 W
2001.3       35k                      02:00                   39322.0           Oct 17 2016 21:22:03 UTC    Oct 24 2016 15:26:57 UTC      several days (at both 50W and 25 W)
2501.3       35k                      05:00                   39322.0           Oct 12 2016 03:20:41 UTC    Oct 17 2016 21:22:03 UTC      days     @ 50 W
3001.3       35k                      05:00                   39322.0           Oct 06 2016 18:39:26 UTC    Oct 12 2016 03:20:41 UTC      days     @ 50 W
3501.3       35k                      05:00                   39322.0           Jul 06 2016 18:56:13 UTC    Oct 06 2016 18:39:26 UTC      months   @ 50 W
4001.3       40k                      10:00                   39322.0           Nov 12 2016 03:28:21 UTC    Nov 16 2016 22:17:29 UTC      days     @ 30 W (see LHO aLOG 31546 for caveats)
4301.3       40k                      10:00                   39322.0           Nov 16 2016 22:17:29 UTC    Nov 18 2016 17:08:49 UTC      days     @ 30 W          
4501.3       40k                      10:00                   39322.0           Nov 18 2016 17:08:49 UTC    Nov 20 2016 16:54:32 UTC      days     @ 30 W (see LHO aLOG 31610 for caveats)   
4801.3       40k                      10:00                   39222.0           Nov 20 2016 16:54:32 UTC    Nov 22 2016 23:56:06 UTC      days     @ 30 W
5001.3       40k                      10:00                   39222.0           Nov 22 2016 23:56:06 UTC    Nov 28 2016 17:20:44 UTC      days     @ 30 W (line was OFF and ON for Hardware INJ)  

Unplugged an unused extension cord (maybe two).
Turned off a power strip that a computer was plugged into. The computer appeared off but I wanted to make sure.
The left door on the left table enclosure behind the black laser safe curtains near the H1 PSL is unlocked. I did not have a key with me to lock it.
Went through the PSL science mode check list hanging next to the air handling controls for the H1 PSL enclosure. Did nothing for the H2 PSL enclosure.
Was not certain of the procedure for checking ISC table fans. Did not hear humming.
The pump near BSC8 is still running. There is a tall ladder against BSC8.
Made sure both card readers were off.

6388 Power cycle cdsfs0

Jim, Dave, Ryan, Carlos:

cdsfs0 (NFS server for /ligo) was powered down, RAID controller card and cables inspected, and powered back up between 11:42 and 12:02 PDT. This is the first action in an investigation of recent periods of /ligo unavailability.

6383 outbuilding WAP disconnects

Carlos, Jim, Dave:

The WAP ethernet cables were disconnected from the local switch at all outbuildings (EX, EY, MX, MY). These switch ports were then reactivated, permitting future use of CDS WiFi if the cables were to reconnected to local switch port #12.

6382 MSR TCS Hartmann Wavefront Sensor

Nutsinee:

The problem of the ITMX HWS image being glitched by running the ITMY camera could not be reproduced. If this problem re-appears, we will install a second camera card in h1hwsmsr. For now, no further action will be taken.

looking at the logs on cdsfs0 over the past week, here are the number of times an error is reported which could have lead to /ligo being unavailable for a short period of time:

Wed Nov 30 04:43
Wed Nov 30 05:51
Wed Nov 30 18:37
Wed Nov 30 20:50
Fri Dec 2 04:40
Mon Dec 5 03:48
Mon Dec 5 14:52
Mon Dec 5 16:17
Mon Dec 5 17:32
Mon Dec 5 19:15
Tue Dec 6 10:42

   Maintenance activities are complete. 
   Reset Fiber Polarization on X-Arm. 
   Starting relocking.

After detecting failures on /Ligo, We power off CDSFS0, review all cable connections and verified that the controller card was plugged correctly on the board, after power back on we manually remounted and exported /Ligo. We also verified all workstations were connected again.

Richard, Patrick, Evan

We refocused the SRM digital camera (cam17) while watching IR flashes on the SRM. The camera aperture was also stopped down a bit.

I've unmonitored all elements of ASC DC5 input matrix for OBSERVE in a hope that this is somewhat useful for passive ASC sensing measurement.

Unmonitored channels are H1:ASC-INMATRIX_P_16_XX and H1:ASC-INMATRIX_Y_16_XX where XX is 1, 2, 3, ... 33.

DC5 is not used at LHO, output of DC5 filters are still monitored (attached), and as soon as the output is turned on we're kicked out of observing, so this has zero impact on the IFO performance.

WP 6383

Carlos, Jim

The wireless access points at EX and EY have been unplugged and the switch ports turned on.  To reactivate the WAP for CDS access, the red ethernet cable will need to be plugged in to the switch as outlined in the VEAsWirelessAccess page in the CDS Wiki.  

Please remember to disconnect it when done!

   Carlos reports the parking lot at End-Y is very icy. Please be careful.

  17:31 Lockloss due to maintenance activities

Not sure of the cause yet, everything seemed all good and normal. Running lockloss plots now though and I'll update if I find anything.

Lockloss due to PSL tripping off.  Currently on the phone with Jason working to remotely restart if possible.  Will update as I know more.