Shift Summary - Day

TITLE: 01/30 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC

STATE of H1: Planned Engineering

INCOMING OPERATOR: None

SHIFT SUMMARY:

LOG:

15:18 (7:18) Mark and Tyler to LVEA

15:50 (7:50) Hugh to LVEA -- Surveying

15:50 (7:50) Jeff to LVEA -- ITM-X camera work

16:00 (8:00) Start of shift

16:05 (8:05) Bubba to OMC -- Help with ion pump

16:34 (8:34) Bubba back from OMC

16:40 (8:40) Phil, Peter, Ed to diode room -- pulling fiber

16:46 (8:46) Chris to end station VEAs -- FAMIS tasks

16:52 (8:52) Tyler out of LVEA

17:03 (9:03) Mark out of LVEA -- Ion pump installed (not electrically)

17:10 (9:10) Mark to LVEA -- Find grounding bolt for ion pump

17:13 (9:13) Marc to TCS

17:16 (9:16) Tyler and Travis to End-Y -- grabbing part

17:19 (9:19) Mark out of LVEA

17:21 (9:21) Hugh out of LVEA

17:35 (9:35) Gerardo and Kyle to LVEA -- IP4 work

17:50 (9:50) Chris back from end stations, going into LVEA

17:52 (9:52) Nutsinee to SQZ bay, then Optics Lab

17:58 (9:58) Ed back from diode room

17:58 (9:58) Travis and Tyler back from End-Y

18:05 (10:05) Gerardo and Kyle out of LVEA

18:26 (10:26) Chris back from LVEA

18:28 (10:28) TVo and Sheila to HAM6

18:30 (10:30) Betsy to LVEA -- Find parts

18:34 (10:34) Terry to SQZ BAY

18:54 (10:54) Betsy out of LVEA

19:06 (11:06) Gerardo and Kyle to LVEA -- IP4 work

19:20 (11:20) TVo and Sheila back from HAM6

19:44 (11:44) Gerardo and Kyle out of LVEA -- IP4 work still in progress

20:11 (12:11) Daniel out of SQZ bay

20:52 (12:52) Nutsinee out of Optics Lab

21:04 (13:04) Betsy and Travis to End-Y -- Assembling ETMY

21:11 (13:11) Bartlett to LVEA -- Remove dust monitors

21:15 (13:15) Ed to CER -- Cable work

21:26 (13:26) Ed back from CER

21:26 (13:26) Ed and Phil to CER -- Re-terminate cables

21:39 (13:39) Kyle to Y-Mid

21:39 (13:39) Nutsinee to Optics Lab

21:46 (13:46) Jenne, TVo, Sheila to HAM6

21:48 (13:48) Marc to LVEA -- Re-terminate cables

21:52 (13:52) Ed, Marc, and Phil back from CER

21:58 (13:58) Corey to End-X -- Organizing

22:09 (14:09) Phil to End-Y -- Taking measurements

22:38 (14:38) Georgia and Cheryl to HAM6

22:54 (14:54) Gerardo to CP1 -- Take photo of setup

22:53 (14:53) Cheryl back from HAM6

23:00 (15:00) Corey back from End-X

23:05 (15:05) Gerardo back from End-Y

23:07 (15:07) Nutsinee back from Optics Lab

23:10 (15:10) Kyle back from Y-Mid

23:12 (15:12) Betsy and Travis back from End-Y

23:12 (15:12) Betsy to LVEA -- Put away materials

23:15 (15:15) Chandra to LVEA

23:22 (15:22) Travis to LVEA

23:22 (15:22) Daniel and Nutsinee to SQZ Bay

23:27 (15:27) Corey to Optics Lab -- delivering part

23:30 (15:30) Ken back from End-X

23:39 (15:39) Corey back from Optics Lab

23:47 (15:47) Travis out of LVEA

00:00 (16:00) End of shift

LVEA transitioned to LASER HAZARD

The LVEA has been transitioned to LASER HAZARD

CDS maintenace summary

WP7291 PEM upgrades

Robert and Dave:

All PEM accelerometer DQ channels which had an acquisition rate of 2048 Hz were sped up to 4096 Hz. All PEM models were changed and restarted (h1pemcs, h1pemex, h1pemey, h1pemmx and h1pemmy). In addition, h1pemcs acquired a new ADC (previously used by h1ngn) and the first 16 channels are being acquired by the DAQ at 2048Hz as test channels.

WP7277 Removal of LVEA dust monitors

See Jeff's alog for details below. First I accidentally restarted the lab system, and then correctly restarted the lvea system. The wiki page says that a burt restore is needed, but it appears the autoBurt.req files have been removed from the target area and therefore are not hourly autoburted. Jeff B manually reset the settings in liu of a burt restore.

Updated Slow Controls Beckhoff SDF system

Daniel, Dave:

All the slow controls beckhoff SDF targets were updated. Their monitor.req files were brought up to date. Their safe.snaps were updated, and their OBSERVE.snaps were made links to the safe.snap. All files now under SVN control.

New Beckhoff HEPI Pump Controller added to CDS

Richard, Patrick, Dave:

The new Beckhoff based hepi pump controller's INI file was added to the DAQ, and its autoBurt.req file added to the target.

h1oaf0 models restart

Dave:

In an attempt to understand why h1oaf has been running long since the removal of h1ngn from h1oaf0, I restarted all the models on this front end. This has not made much difference.

DAQ Restart

Finally a single DAQ restart to cover the new slow controls, hepi pump controller and new PEM configuration. This has GREENED up the EDCU.

Restart times are shown below:

2018_01_30 10:12 h1iopoaf0
2018_01_30 10:14 h1calcs
2018_01_30 10:14 h1oaf
2018_01_30 10:14 h1odcmaster
2018_01_30 10:14 h1pemcs
2018_01_30 10:14 h1susprocpi
2018_01_30 10:14 h1tcscs
2018_01_30 10:16 h1pemex
2018_01_30 10:16 h1pemey
2018_01_30 10:18 h1pemmx
2018_01_30 10:20 h1pemmy
2018_01_30 12:07 h1broadcast0
2018_01_30 12:07 h1dc0
2018_01_30 12:07 h1fw0
2018_01_30 12:07 h1fw1
2018_01_30 12:07 h1fw2
2018_01_30 12:07 h1nds0
2018_01_30 12:07 h1nds1
2018_01_30 12:07 h1tw1
2018_01_30 13:37 h1sysecatc1plc1sdf
2018_01_30 13:42 h1sysecatc1plc1sdf
2018_01_30 13:52 h1sysecatc1plc2sdf
2018_01_30 14:07 h1sysecatc1plc2sdf
2018_01_30 14:07 h1sysecatc1plc3sdf
2018_01_30 14:16 h1sysecatc1plc4sdf
2018_01_30 14:20 h1sysecatx1plc1sdf
2018_01_30 14:27 h1sysecatx1plc2sdf
2018_01_30 14:30 h1sysecatx1plc3sdf
2018_01_30 14:34 h1sysecaty1plc1sdf
2018_01_30 14:41 h1sysecaty1plc2sdf
2018_01_30 14:43 h1sysecaty1plc3sdf

 

NMBDs added to ETMy main chain UIM

Non-magnetic blade dampers (NMBDs) were added to the blades of the main chain UIM of the new ETMy.  Serial numbers installed were 013 and 017.

H1 CAL EY PCAL Periscope B'n'K Hammer Response, As Found / Before Mods

J. Kissel, T. Shaffer, J. Warner

In prep for all modifications to the H1CALEY PCAL Periscope structure (camera relay mirror removal, vibration absorber install, baffle panel install), Jim, TJ, and I measured the response of the PCAL periscope as it had been for all of O1 and O2, and compared it against LLO's recent results, trying to repeat their study as closely as possible (see LLO aLOG 33697).

The results are strikingly (haaaaaaa!) similar. See main attached "H1vsL1" .pdf for comparison between the most coherent measurement (striking in the three o'clock position, close to the inner annulus, with the accelerometer just below it). Prominant features (for both) are at ~67, 106, 115, and 210 Hz.

Because the response is so similar to LLO's periscope, it gives us high confidence that the vibration absorber installation plan (E1700125) will work nicely. As such, we'll not bother taking the full gamut of piece-by-piece removal and installation of parts, and just take the measurement again after all modifications are complete.

%%%%%%%
Details
-------
Measurement repeat:
- We installed B&K accelerometer mounting plates in two locations ("12 O'Clock" and "3 O'Clock"), as shown in the first picture attachment.
- We measured the response in these two locations, moving the accelerometer from location to location, but hitting the hammer in the same location for each measurement. The remaining pictures show further detail.
- The accelerometer is mounted with its X axis aligned with the IFO's global Y direction, i.e. Longitudinal of ETMY in the IFO laser beam direction. Accelerometer Y is anti-aligned with IFO X, and Z is pointing toward the ground, anti-aligned with local gravity. The hit direction is with the IFO's Y axis, the accelerometer's X axis, and the beam direction, exciting drumhead modes of the periscope.

- The first .pdf shows a comparison between H1 and L1 persicope, both prior to any mirror removal, vibration absorber install, or baffle install.
- The second attachment shows all three DOFs of both measurement locations in case they're needed. The L1 data is identical to what is shown in LLO aLOG 33697, namely,
    /ligo/svncommon/SusSVN/sus/trunk/QUAD/L1/ETMY/BandK/
        SimpleHammerDisplay3-ETMY-PCALBaffleYT1a-SUSunlocked-ISIunlocked-VAnotfitted-Ximpact.txt (12 O'Clock response)
        SimpleHammerDisplay3-ETMY-PCALBaffleYT2a-SUSunlocked-ISIunlocked-VAnotfitted-Ximpact.txt (3 O'Clock response)
    

Remove Dust Monitors from LVEA

 Dave Barker, Jeff Bartlett  

   Dave removed dust monitors #2, #3, #4, and #30 from the LVEA dust monitor software. These monitors have been removed from the LVEA. Currently dust monitors #5, and #6 are running to support work in HAM5/6 and dust monitor #10 is the permanent LVEA monitor in the Biergarten. 

   I will be updating the "check monitors are working" script and AlarmHandler shortly.
 
Closing WP #7277.   

Post Pump down elevation Survey of HAMs 2 & 3

On Aug 29 & 30, while at vacuum, the elevations of the HEPI piers were measured with Optical Auto-Level--LHO aLog 38584.  On Sept 20 and 27, the HAM Piers were measured again--38776 & 38810, now with the Vertex was at atmosphere.  Today, after the Vertex (sans HAM6) is again under vacuum, the piers were sighted again.

The conclusion here is while there are some changes while vented and when back to vacuum, the most is a few tenths of a millimeter and amount to ~100urads of tilt in the worst case.  Not necessarily tiny but not horrible.  Attached are my surveying notes from today and the deltas from before, during and after.

 

LVEA transitioned to LASER SAFE

The LVEA has transitioned to LASER SAFE.

Increased DB1 diode current

This morning the main laser screen reported an output power of ~152 W.  This is significantly down from yesterday's value of
~180 W.  Decided to increase the diode current of DB1 to the maximum.  The reported power jumped up by ~20 W.

    Other fine tuning might prolong the inevitable.

I adjusted the diode temperatures for DB1 a little.  The power indicated on the MEDM screen went from 135.3 W to 141.3 W.
The Beckhoff main screen indicates a power of ~184 W.

D1 is 27.0 degC, was 24.5 degC
D2 is 27.7 degC, was 24.5 degC
D3 is 22.5 degC, was 21.5 degC
D4 is 23.5 degC, was 23.5 degC
D5 is 22.5 degC, was 23.0 degC
D6 is 27.5 degC, was 24.5 degC
D7 is 24.5 degC, was 24.5 degC

    Altering the temperature of D3 does not do much.  D3 is pretty much dead in my opinion.

PRMI flashes

T Vo, Sheila

We aligned PRMI a little bit.  We started with PRX and PRY, and saw that our PRM alignment for PRX and PRY fringes has shifted by about -300 urad in pitch since Jan 17th.  We used picomotors to center the IMC WFS because we saw that there was a shift on IM4 trans QPD today around the time that Cheryl would have been on IOT2L.  Centering only moved IM4 trans a small amount back to where it was before Cheryl's work.  We aren't sure if this is the reason for the shift in alingment of the input beam. 

I was able to see PRMI flashes, not well alinged, by moving PRM, PR2 and BS, the overall impact was to move PRM back towards the Jan 17th alignment.  We now have flashes on POP 90 of around 10 counts, (there is a 10 count offset, so flashes go up to 20 counts) with 1.2 Watts into the interferometer.   We should be getting something like 100 count flashes, but it might just be that we aren't well aligned yet.  I haven't adjusted anything on the table or adjusted teh demod phase, although the demod phase seems OK. 

The attached screenshot shows the alingment for which we get small sideband flashes in POP90.

OM sliders offloaded, beam centered on OMC input QPDs.

[Keita, TVo, Jenne]

With the OMC free-swinging with no alignment slider offsets, we closed the OMC ASC loops with OM2 and OM3 as actuators.  OM1 is at 0 slider offset in pitch, and a small 450urad in yaw.  This told us how we needed to offload the OM2 and OM3 sliders such that we're near the center of their range.

Much of the offloading needed was in pitch.  For OM2, we removed the front earthquake stop holders, loosened the setscrew for the pitch adjustment (it was already loose enough that it fell out, but Keita caught it and re-installed it).  We noted the OSEM Wit value when the pitch offset slider was at its large value, set the slider to zero, then adjusted pitch to set the OSEM Wit value back to what it needed to be. Keita tightened the setscrew and replaced the earthquake stop holders.  OM2 was then rotated a small amount to offload the yaw slider, and we re dogged the cage to the table.  The procedure was largely repeated for OM3, although we did set some dog clamps as references, then moved the OM3 cage a little closer to the door so we had access to the pitch adjustment screw.  OM3 was replaced after pitch offloading, yaw was offloaded, and OM3 was re dog clamped down to the table.

We have beam on both OMC QPDs, so should have no problem reclosing the ASC loops and then locking the OMC if we so desire.

N.b., beam height incident on OM1 was 104 mm, beam height incident on OM2 was 98 mm, beam height after reflection from OM3 was 102 mm.  

To do:

• Fast shutter position set (for refl to hit beam dump)
• Fast shutter wire dressing
• OMC shroud replacement on side nearest HAM5
• AS_C path check
• AS WFS path check
• OMC Trans path check
• OMC refl path check
• Replace glass beam dump with new silicon carbide version

ETMY PenRe mechanical issues

So, after I rebuilt the ETMY PenRe mass assembly D060341 late last week, this morning Travis went to exercise it's central Pitch adjusting bar to check for it's ease of slide, needed for in-situ alignment.  He found that it was extremely difficult to move.  (I hadn't thought it was so bad last week, but I used isopropanol to insert it and was able to have it slide around - probably finding the lucky and illusive "sweet spot" with these.  Now, the isopropanol wasn't even helping.  Once mated to the monolithic ETMy optic set we will not be able to use isopropanol to get it to slide anyways fo fear of dripping onto optic/fibers.)  We've had troubles with this fit in the past and believe there is an issue with tolerances in the drawings which we never reworked, instead just "making due".  Tried as we might, when dry we could not "make due" today.  We even tried filing down any miniscule burrs and even swapping with the 1 remaining spare, which seemed just as bad of a fit.  So, we've lost a day to this now and will need to consider something more drastic in the morning such as opening up the center hole in the main mass D060342 and rebaking the part or find a suitable spare in 3IFO inventory (not trivial because it means painfully relocating an pre-assembled lower QUAD unit into a clean space, opening it, disassembling it's PenRe and hoping for a better fit with the borrowed parts).  TBC...

EY PCAL Periscope Vibration Absorbers Installed

Today, Jim and I installed the 4 vibration absorbers on the EY PCAL Periscope. Since we only had the one type of D1600401, we had to mount them on the 45deg spokes as shown in D1200174 on the last page. See attached pictures, though kind of hard to get good shots due to access.

One issue we ran into is that the vibration absorber assembly drawing (D1002424) says to use 1/2" long 1/4-20s with a washer to mount D100895 to D1600401. We found that the screw would still poke out the back even with a thicker washer. We had to double or triple washer stacks to keep them from protruding.

Preparing 10" gate valve at CP4 for equipment installation

Tightened the (as found closed) 10" gate valve at CP4 and then vented the non-CP4 side.  There may have been a slight improvement in CP4's pressure as the result of this exercise (see attached graph).  I was working alone and wasn't able to observe the peak pressure on the connected pump cart when the unpumped "dead volume" of the gate valve was valved-in to the pump cart but I could tell that the gas load was enough to slow the pump cart's turbo.  

Tomorrow I will remove the 10" gate valve's zero-length reducer and install the turbo, gauge, valves and RGA components needed for the decommissioning of CP4 later in February.  

Testing EX HEPI pump control running on Beckhoff

Filiberto, Hugh, Patrick, Richard

This morning Hugh and I took the end X ISI guardian to ISI_DAMPED_HEPI_OFFLINE. Hugh and Filiberto then went to end X and Filiberto moved the wiring from the existing HEPI pump controller box over to the Beckhoff box. We found some minor issues with the Beckhoff PLC code that I corrected. Restarting the PLC code tripped off the power to the HEPI pump motor and I went to end X to reset it. We have since tuned the Beckhoff PID (actually just PI) and will leave it running overnight.

Filiberto, Richard, Patrick

Today we took it off of PID control and ramped down the VFD. Filiberto then went to end X and connected the VFD readback signals to the Beckhoff terminal. We then turned the PID back on. It is currently keeping the differential pressure at 70 psi.

Prepped IP4 for installation

Finished venting IP4 with bottled UHP N2 (started Friday afternoon then halted).  Also vented (with bottled UHP N2) non-VE side of closed 12.8" gate valve (new VAT valve) mounted on OMC tube and having 16.5"-2.75" CFF zero-length reducer flange with 1 1/2" pump port valve.  New valve doesn't leak!  

Chandra will be in early tomorrow to remove connected equipment and supervise installation of IP4 onto the OMC.  

Shift Summary - Day

TITLE: 01/29 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC

STATE of H1: Planned Engineering

INCOMING OPERATOR: None

SHIFT SUMMARY:

LOG:

16:00 (8:00) Start of shift

16:15 (8:15) Hugh to End-Y -- HEPI filter change

16:22 (8:22) Ken to End-X -- Piping work

16:48 (8:48) Hugh out of End-Y

17:47 (9:47) Bartlett to termination slabs -- ITM camera work

17:57 (9:57) Phil to End-X -- Looking at cabling for HEPI

18:36 (10:36) Cheryl to IOT2L -- Align cameras

18:45 (10:45) Ed to HAM6 -- Inspect wire

18:58 (10:58) Jenne, Keita and TVo to HAM6

18:59 (10:59) Phil out of End-X

19:00 (11:00) TJ and Jim to End-Y -- PCal baffle work

19:03 (11:03) Hugh to LVEA -- Retrieve hardware

19:12 (11:12) Phil to End-X

19:15 (11:15) Hugh out of LVEA

19:45 (11:45) Cheryl out from IOT2L

20:01 (12:01) Bartlett out for lunch

20:08 (12:08) TJ and Jim out of End-Y

20:10 (12:10) Phil and Hugh out of End-X

20:20 (12:20) Jenne, TVo, Keita out of LVEA

20:59 (12:59) Bartlett to termination slabs -- ITM camera work

21:05 (13:05) TJ and Jim to End-Y -- PCal baffle work

21:10 (13:11) Kyle to HAM4 -- climb up OMC tube

21:13 (13:13) Travis and Betsy to End-Y -- Putting ETMY back together

21:29 (13:29) Ed to CER -- Terminate cables

21:35 (13:35) Kyle out from HAM4

21:53 (13:53) Peter and Gerardo to Optics Lab

22:06 (14:06) Bubba and Mark to LVEA -- Work on snorkel lift

22:27 (14:27) Elizabeth to HAM6 -- Scan components

22:36 (14:36) Patrick to End-X -- Reset power to HEPI pump control

22:40 (14:40) Nutsinee to ISC Rack

22:40 (14:40) Bubba and Mark out of LVEA

22:50 (14:50) Nutsinee out from ISC Rack

22:53 (14:53) Patrick out of End-X

23:13 (15:13) Bartlett out from termination slabs

23:26 (15:26) Jenne, Keita, and TVo to HAM6

23:30 (15:30) Peter and Gerardo out of Optics Lab

23:47 (15:47) Elizabeth out from HAM6

23:49 (15:49) Terry to SQZ bay

23:54 (15:54) Ed out of CER

0:00 (16:00) End of shift