ETMY SUS Status - ETM16

This afternoon, Travis and I rolled the ETMY/PUM monolithic main chain from the weld room around to it's AERM/PenRe reaction chain pal in the staging room next to the chamber.  We used the Genie duct jack to lift the ETMY set from it's trolley and place it next to the AERM double.  After some alignment checks, we pushed them together and fastened up their 8 mating screws.  We left the newly married couple covered and ready for tomorrow's big adventure back into the chamber to meet their upper half.

Thanks Peter for the photo assay of today's work on this!

A small assortment of pictures from yesterday.  Most pictures appear hazy due to the intervening
cleanroom enclosure curtains.

Weekly ISI CPS Spectra

ETMY, HAM6 ISI & HEPI are both locked. Other spectra look normal. 

Laser Locking

Nutsinee Marc Daniel

The (hopefully) final version of the TTFSS V4 has been installed. The modifications are described in E1700364. To increase the beat note strength the first directional coupler in the TTFSS preamplifier has been replaced by a splitter which results in 8dB more gain.

The ugf is around 500kHz with a crossover around 30kHz. The autolocker seems to be working fine too. Plots to follow.

Weekly PSL Chiller Reservoir Top-Off

Added 100ml to the crystal chiller.

Viewport Emulator Installed on HAM6 North Door

The viewport emulator is now installed on the HAM6 north door to facilitate ISC beam alignments.  We needed to clock the o-ring protectors 3-4 bolt holes (don't remember which) clockwise to get the holes lined up so the emulator would bolt on straight (LHO WP 7322.  We initially thought the wrong protectors were installed, turned out it was a simple mispositioning when they were intially installed.  This also closes WP 7322.).

ISCT6 Mode Matching

Terry, Nutsinee, Sheila, Daniel

The mode matching solutions of the beam paths on ISCT6 are attached.

Mode matching of Mephisto 1064 nm laser to the SHG > 98%

Coupling efficiency of PSL path to fibre 80% 

Coupling efficiency of LO path to fibre 75% (same solution as for PSL path).

Coupling efficiency of PSLLO path to fibre 75%.

Coupling efficiency of Green pump light to fibre for OPO 85%.

Coupling efficiency of seed path to fibre 88% 

Coupling efficiency of CLF path to fibre 81%

Added SQZ and SQZWFS to SDF Overview MEDM

I have added SQZ and SQZWFS front end models' SDF info and links to the main SDF_OVERVIEW MEDM. I've squeezed them in between ISC and PSL (see attachment).

HAM6 work, much progress, almost complete

[Georgia, Sheila, TVo, Jenne]

We completed several tasks in HAM6 today, and will perhaps be (crossing fingers....) done in there tomorrow.

• Offload of sliders from yesterday (alog 40323) still good, while input beam in position from yesterday during the day.  See snapshot of OM2 and OM3 outputs when those were used as the OMC ASC actuators (OMs_yesterdayAfternoonSettings.png, lower right corner).  SR2 needed to move by about 20 urad for us to get through the OFI, but this is likely due to the input beam small shift from yesterday.
• Put input beam back to where Sheila and TVo had it last night (alog 40325), turned on OMC ASC again with OM2 and OM3 as actuators.  Outputs still smallish, max ~4500 out of 32000 (OMs_yesterdayEveningSettings.png, lower right corner). Keeping this alignment going forward. 
• Dressed the fast shutter wire, copying LLO's method of using the screw hole on the top of the shutter's shoulder.
• Put the OMC shroud piece that had been removed, back on.
• Ensured the beam transmitted through OM3 was roughly centered on the AS WFS.  We can tweak this up a teeny bit with the picos when we have more power, but we're within about 0.5 normalized units of center for each WFS.  This required translating the first steering mirror after OM3 a teeny bit, and twisting it in yaw.  Dogged that one back down, then needed to twist the last steering mirror before the sled a small amount to center on the lens and mirrors on the sled.  Used the screws that the pico motors are on to get the beams roughly centered on the WFS.
• Recentered the beam on the AS_C path.  This required moving the lens right in front of AS_C a bit, although closer to its original position (we had moved it a bit last week when we first got beam onto AS_C). 
• Replaced the OMC REFL beam dump black glass with SiC.  We then moved the OMC REFL beam diverter out of the way (it will eventually be utilized by the squeezers on the other side of the table) and put the beam dump where the diverter had been.  This means that we don't have beam on the OMC Refl QPDs, but I don't recall ever having used those signals in the last few years.  This is also the same location that LLO used for their OMC REFL beam dump.  This required a taller post, which Corey was able to find for us.
• Steered the beam that is for AS AIR to be hitting the center of the AS AIR beam diverter, when the beam diverter was closed.  We'll check this again tomorrow once we have the viewport simulator installed, but this should certainly be pretty close.
• We can't see the beam at OMC Trans, that is supposed to come out to ISCT6 for the camera.  With the purge air up, we can't lock the OMC, and we weren't able to see the flashes on an IR card.  We'll think on this again tomorrow, but we're supposing that since the OMC hasn't moved, the trans beam should be coming out in the same place as it used to.
• We checked beam clearances.  They all seemed good.  TVo will post the numerical values as a comment to this alog.

Still to do:

• Check fast shutter reflection.  We can't figure out how to get the fast shutter to stay closed.  With the driver and high voltage on, we were able to get it to close, but then it would immediately reopen.  It has been suggested that if the driver is on, it might "drift up", but if this doesn't happen overnight we'll need some help convincing the shutter to stay closed while we finalize its position.
• Check AS Air path comes out of viewport simulator.
• Check OMC Trans path comes out of viewport simulator (maybe, if we think we'll be able to see the beam).
• Take photos, including fast shutter wire clearance, location of new SiC beam dump.

IP4 installed

[Mark D, Tyler G, Bubba G, Kyle R. Gerardo M. Chandra R]

Team effort today installing, leak checking, and activating ion pump #4. Mark, Tyler, and Bubba installed the pump this morning (thanks, guys!) and then Kyle and Gerardo leak checked with calibrated leak detector. We found a small (1.9 Torr-L/s) He leak at the 8" CFF (from factory bake?). I tightened the fasteners and made leak significantly worse (e-8 range), but then Kyle improved it with some muscle. We're calling it good at 1.1e-9 Torr-L/s He and turned high voltages on. Current was high to start (23 mA), but coming down with time.

SR3 Heater mod to TCS EtherCAT Chassis

Ed, Fil, Marc

This morning we added Beckhoff terminals to the TCS chassis for the SR3 Heater per WP7283.  More information can be found here: D1102207-v6

ETMY SUS Status

Today, we launched the rework of the PenRe Pitch Mass (found problem yesterday 40322) and will be back in business with that hopefully in the next few days.  Travis rebuilt the PenRe without it and re-stuffed it back in the ETMY SUS structure.  (The pitch slider will be an easy add later.)  We then installed the new Annular End Reaction Mass into the structure below the PenRe.  Serial number of this mass is AERM-07.  We set the roll of the mass by eye to better than ~1mm and suspended it as a single from the PenRe.  It looked pretty good in pitch given that the PenRe wasn't sitting perfectly in it's stops above.

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.

 

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.