I've made some changes to the BRS FAMIS script to include some auxiliary channels. These extra channels are on a second plot that should be posted with the drift mon trends on the first plot. All the plots should be color coded, blue for ETMX, red for ETMY. All plots are timeseries for the same 7 week time frame. I've started updating the script so LLO can use it if they want, but I'm not sure which nds server to use. I use h1nds1 for LHO.

Otherwise, BRSY is getting close to going out of range, BRSX has gone out of range, but looks like it was due to a temperature excursion. I'm not sure we should do anything for either one, until the chamber work is done and the cleanrooms are turned off.

Started roughing down EY this morning with QDP80. BSC10 door annulus is pumping with cart. Karen pointed out a small water leak (drip) near QDP80 in mechanical room. We'll keep an eye on it.

Verified high voltage is off.

Blow down dew point measured -11.4C.

HV NEG and IP11 are valved in.

Sheila is transitioning the LVEA to LASER HAZARD.

S. Dwyer, P. King, J. Kissel

Shiela reduced the 1064 nm laser power coming from the PSL going into the vacuum system via the PSL's rotation stage down to 108 mW (measured down stream of the PSL rotation stage, H1:IMC-PWR_IN_OUT16) to 108 mW, then Peter and I locked out the rotation stage controller. We've confirmed that requesting adjusting rotation stage angle does not change the power after locking out the controller.

It's currently laser SAFE (the PSL light pipe has been shuttered as normal), but in case we need the PSL light for alignment later, I figured we'd get the procedural stuff done before we need it. Due to IMC particulate concerns, we wish not to have higher than ~100 mW in-chamber while in air, so as to not burn stuff into a flashing IMC (see M1300464).

J. Kissel

I gathered a dust count reading before doors were removed this morning. Counts are zero and zero!

J. Kissel, J. Warner

In prep for today's vent, Jim and I locked HAM5 HEPI. 

Displacements between locked and unlocked are on the order of ~20-30 um, and 5-10 urad from nominal floating position with IPS-only, "position" loops closed. See attached screenshots, but I recap pertinent info below.

    dX    -2.3 um
    dY   +17.6 um 
    dZ   +23.7 um
    dRX   +1.2 urad
    dRY   +4.1 urad
    dRZ   -8.7 urad

I also attach pictures of the locking bolts / set screws. To lock HEPI (while attempting to preserve alignment):
    - Procure a CDS laptop, and open MEDM to get the DC BIAS screen of the given HEPI you want to lock
    - Take a screen cap of the screen before you get started.
    - Run all set screws and bolts into such that they're barely contacting the floating cube in each / every corner.
    - Using the appropriate allen wrenches (you'll need two sizes, 3/16" and 1/4"), and while watching the attached displacement screen, gently nudge the bolts further into contact until tool tight, rotating between bolts / set screws so as to not crank on any one bolt more than the others for a given tightening iteration. It's fine to do this sequentially around the corners. 
    - Displacements from nominal on the order of a few 10s of um / urad are the precision you'll be able to lock the position.
    - Take another screenshot of the position and displacement once done and record.

This process takes about 20-30 minutes.

    

Minute trend plot of PT246B for the last 12 hours attached per Gerardo's request.

Gerardo, Mark D. Tyler, Chandra

Corner

• Torqued IP5 studs metal on metal
• Got XBM & YBM on turbos/scrolls and leak checked:
  • IP6 valve (beam tube side) and PT-170 gauge with background at 3.1e-9 Torr-L/s (there will be no IP6 installed here until rebuilt unit ships from vendor in May)
  • IP5 + valve with background at 2.0e-9 Torr-L/s. We had some troubles pumping down IP5 with pump carts. The little red "cube" kept tripping, even with a 'hung' turbo. The trusty old pump cart survived the long wait through ~10 Torr. We thought we had a big air leak somewhere, but all checked out. IP5 isolation gate valve was left open to pump down with main YBM volume
  • New GV on XBM turbo is leak tight with background at 3.3e-9 Torr-L/s
• Vented vertex
• Loosened bolts on IP3 to prepare for R&R tomorrow (no, not that kind of R&R). Left its isolation GV open
• Loosened HAM5 doors bolts

EY

• Torqued IP11 stack studs metal to metal
• Installed BSC10 door and successfully pumped down annulus (i.e. no leaks)
• Turned on QDP80 to warm up
• Purge air scroll #4 is loud, so we turned it off for now. Might be a bad one-way valve
• Connected charged battery pack for turbo

We will start roughing down EY tomorrow.

J. Kissel

I've taken standard close-out transfer functions for H1 SUS TMSY. It's free and clear of rubbing, and results looking strikingly similar to before. OK for pump down!

Raw data is committed here:
    /ligo/svncommon/SusSVN/sus/trunk/TMTS/H1/TMSY/SAGM1/Data
        2018-04-04_2209_H1SUSTMSY_M1_WhiteNoise_L_0p01to50Hz.xml
        2018-04-04_2209_H1SUSTMSY_M1_WhiteNoise_P_0p01to50Hz.xml
        2018-04-04_2209_H1SUSTMSY_M1_WhiteNoise_R_0p01to50Hz.xml
        2018-04-04_2209_H1SUSTMSY_M1_WhiteNoise_T_0p01to50Hz.xml
        2018-04-04_2209_H1SUSTMSY_M1_WhiteNoise_V_0p01to50Hz.xml
        2018-04-04_2209_H1SUSTMSY_M1_WhiteNoise_Y_0p01to50Hz.xml

The DMT test box, h1dmt3, was patched and rebooted today at about 2 pm PDT. This should have no impact on the control room.

TITLE: 04/04 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC

STATE of H1: Planned Engineering

INCOMING OPERATOR: None

LOG:

14:39 (7:39) Tyler, Mark to EY

15:00 (8:00) Start of shift

15:15 (8:15) Bartlett to EX -- reset dust monitor #2

15:39 (8:39) Bartlett leaving EX

15:59 (8:59) Chris to EY -- delivering bolt

16:05 (9:05) Tyler, Mark back from EY

16:14 (9:14) Peter and Fil transitioning to laser safe

16:31 (9:31) Gerardo to EY -- vacuum work

18:14 (11:14) TVo, Sebastien, Dan, Alexei to LVEA

18:39 (11:39) Gerardo back from EY

19:02 (12:02) Gerardo to LVEA

19:29 (12:29) Fil to ISCT6 -- collect GIGE cameras

19:57 (12:57) TVo, Sebastien, Dan, Alexei out of LVEA

20:19 (13:19) TJ to HAM5 -- cleaning up

20:39 (13:39) Chandra, Tyler to LVEA -- craning work

20:43 (13:43) Gerardo to IP5

20:46 (13:46) Betsy to LVEA -- find something for Livingston

20:48 (13:48) Elizabeth to LVEA

21:02 (14:02) Jason to PSL enclosure -- grab materials

21:03 (14:03) Betsy out of LVEA

21:20 (14:20) TJ out from HAM5

21:29 (14:29) Jason out of PSL enclosure

21:37 (14:37) Elizabeth out of LVEA

22:01 (15:01) Betsy to LVEA -- investigate HAM5 HEPI

22:26 (15:26) Tyler out of LVEA

22:38 (15:38) Mark out of LVEA -- finished moving forklift

23:00 (16:00) End of shift

I spend most of the day taking transfer functions of the ETMY main and reaction chains intermittant with my other crazy business.  Kissel took over after I exported all of the data but got a flag during the matlab processing of it and had wandered off with my patience.

Things look good with the plots now (as hinted via the quick looks at closeout yesterday), see attached.

Kissel has committed the new data to the SVN repository.  Data can be found at the usual Data or Results directories at

/ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ETMY/SAG*/

FAMIS 6569

Added 70 mL to crystal chiller.

Started venting vertex this morning and spun up turbos on XBM and YBM. Looks like IP1 isn't going to make it - its isolation GV is probably leaking. The new GV on IP4 is sealing great!

This afternoon, Travis and I pulled the First Contact on the ETMY HR surface.  WE measured charge via the standard procedure at the back of the AERM before and after.  We had a hard time blowing with 10-20psi DI N2 to reduce the charge originally at ~12V to under 3V.  More detail on this in attached alog shortly.

AFter we were satisfied with the final "dis"charged state, we then set the lower earthquake stops/lock nuts on the ETMY, and pulled the ACB (arm cavity baffle) back down into it's nominal position.  I noticed however that the ACB felt like it was rubbing on something when I bounced it vertically.  Inspection revealed that one of the earthquake (EQ) stop bars D1201235 was rubbing the down tube in the roll direction.  I moved weights around on the top of the box in an attempt to free it, however I ran out of range.  Either this unit has been rubbing for a while, unnoticed, or sometime during this last few months of vent work we jostled it enough to twist something like the flexture, blade, down tube shaft, or box.  In consult with Calum and Jeff K, the consensus was to just remove this EQ stop bar since it only constrains the ACB in the less critical roll and yaw motion which have other mechanical backup restraints.  Of course removing the long bar proved difficult because it was trapped between the unit and the chamber wall.  Travis was able to convince it to come out via bending it's tip.

Will file an FRS for this to be investigated further when we have more time/people power than today's closeout mustered up.

After Jim unlocked the ISI, Travis cleared the chamber of tools/stools/CC supplies.  Note, we did not pull any of the freshly placed 3" or 1" samples in this chamber left during closeout just a few weeks ago - all CC kits had already been pulled and I could not organize to get help with this.

Travis and I have been running TFs on the main and reaction chains of ETMY and things look good.  We are good to put the door on tomorrow morning asap.  (Note, Mark D and Tyler have it hanging on the engine hosit ready to go.)

Between yesterday and today, Gerardo and I successfully bonded the ears to core optic mass ETM15, destined for LLO for post-O1 eventual replacement. 

Ear s/n 195 bonded to S3 flat of mass June 29, 2016

Ear s/n 196 bonded to S4 flat of mass June 30, 2016

The first ear (s/n 195) has a series of bubbles along it's edge, but the surface area of these do not add up to more than the allowed amount as per E1000277, so it passes, see pix attached.

The second ear (s/n 196) has no bubbles and is nice full bond.