I ran the script with the following settings: CP1_Fill.py 100 -130 600.  Overfill verified via one of the site cameras.

Note from script:

CP1 Fill completed in 37 seconds. Starting CP1 fill. LLCV enabled. LLCV set to manual control. LLCV set to 100% open. Fill completed in 37 seconds. TC A did not register fill. LLCV set back to 34.6% open.

From the note it appears as if TC A had some lag regarding the temperature readout, because on the attached plot it shows its temperature did go below -130 deg C.

Gerardo M., Travis S., Kyle R.

An RGA scan was taken before and after hard-closing GV18.  The instrument air compressor, Class-100 vent/purge air supply, QDP80 and Turbo pumps were also started.  We are ready to vent the Y-end station following the 0900 site activities meeting in the morning.  Note that there will be dirty activity following the vent which will prohibit BSC door removal tomorrow. 

TITLE: 10/18 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
SHIFT SUMMARY: Construction, HAM5/7, and PSL work continues. EY vented. LVEA is Laser HAZARD.
LOG: 

Date UTC (local)

18-10-21 15:34 (08:34 AM) Karen and Kim in LVEA                                 
18-10-21 15:35 (08:35 AM) NDS0 is restarted
18-10-21 16:14 (09:14 AM) Cheryl in PSL
18-10-21 16:53 (09:53 AM) Mitchell and TJ in HAM5/7/beer garden area
18-10-21 17:07 (10:07 AM) Jenne in PSL
18-10-21 17:07 (10:07 AM) Karen and Kim are out of LVEA
18-10-21 17:17 (10:17 AM) Varun in PSL
18-10-21 17:37 (10:37 AM) Mitchell and TJ are out of LVEA
18-10-21 17:55 (10:55 AM) Camilla and Sheila in HAM5/7 area
18-10-21 17:59 (10:59 AM) Betsy, Lee, Win in LVEA
18-10-21 18:10 (11:10 AM) Georgia in LVEA
18-10-21 18:12 (11:12 AM) Keita in HAM5/7 area
18-10-21 18:12 (11:12 AM) Betsy is out of LVEA
18-10-21 18:30 (11:30 AM) Georgia is out of LVEA
18-10-21 18:30 (11:30 AM) Keita is out of LVEA
18-10-21 18:37 (11:37 AM) Rahul in HAM5/7
18-10-21 18:38 (11:38 AM) Jim headed to EX to check on HEPI pump
18-10-21 18:49 (11:49 AM) Karen and Kim are out of EY
18-10-21 19:21 (12:21 PM) Varun, Cheryl, and Jenne are out of PSL
18-10-21 19:23 (12:23 PM) Rahul is out of LVEA
18-10-21 19:52 (12:52 PM) Lee and Wen are out of LVEA
18-10-21 19:59 (12:59 PM) Camilla and Sheila are out of LVEA
18-10-21 20:00 (13:00 PM) Jim headed to EX to grease the HEPI pump
18-10-21 20:12 (13:12 PM) Varun and Cheryl in PSL
18-10-21 20:33 (13:33 PM) Travis, Gerardo, and Kyle heading to EX to prepare    for venting EY; per Betsy's instructions: set guardians SUS_ETMY and SUS_TMSY   to SAFE (noticed that SUS_TMSX and SUS_ETMX guardians were set to Damped,       changed them to ALIGNED); per Jim's instructions: 1) turned off sensor          correction for ETMY by setting SI_ETMY_ST1_SC to CONFIG_SC_OFF. 2) set the gain of H1ISI-ETMY_ST2_ISO_RX and RY DoF to zero. 3) and then set watchdog SEI_ETMY  to ISI_DAMPED_HEPI_OFFLINE.
18-10-21 20:47 (13:47 PM) Jim is back from EX
18-10-21 21:11 (14:11 PM) Camilla in HAM7
18-10-21 21:15 (14:15 PM) Sheila, Lee, and Wen in HAM7
18-10-21 21:22 (14:22 PM) Jenne in PSL
18-10-21 21:52 (14:52 PM) Betsy in HAM5/7
18-10-21 22:12 (15:12 PM) Betsy is out of LVEA
18-10-21 22:48 (15:40 PM) Cheryl is out of PSL
18-10-21 22:48 (15:48 PM) Jim headed to EY to troubleshoot HEPI pump
18-10-21 23:09 (16:09 PM) Jim is back from EX

Update to A+, most of the re-bar is installed and ready for last section of the FCTE slab tomorrow and prepping for forming and rebar for FCES slab. Also some plumbing going in for pressure testing before pour. 

Installed the new 105kHz interface chassis, D2000552, in the R1 squeezr rack position U6. It is powered up and all cables are connected. Also connected the DAQ cable at the rear of the LSC front-end chassis.

Work Permit 9986

The first cleaned 15' FC Tube has been craned over to the West bay in/or near the small baffle cleanroom (it has passed FTIR sample testing).  Corey is go for the next round of baffle installation.

Previous alog#60039. Following Nidhi's instructions in T2100415. Closes FAMIS 17463.

Closes FAMIS 17360

Updated local T1500280 to a v23. Performed CS on 11-Oct-2021, EX,EY on 15-Oct-2021.

TITLE: 10/18 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
CURRENT ENVIRONMENT:
    SEI_ENV state: CONSTRUCTION
    Wind: 1mph
QUICK SUMMARY: Construction work continues. LVEA is laser SAFE, but will be transitioning to laser HAZARD after 9 am.

SudarshanK, RickS

We created two new transfer standard, TSA and TSB in order to facilitate the transfer of laser power calibration between the  national metrology institutes (NMIs) and the various observatories. We are in the process of characterizing these new transfer standard. We have made couple of measurements in the  last few weeks. The result from those measurements will be posted at same later date. Here we present the measurement of temperature coefficient of TSA that was made yesterday.

TSA was in the oven since 3:00 PM  Oct. 12, set at the temperature of 39 deg C. On October 13, the responsivity ratio between TSA and TSB were measured letting the TSA to cool from its heated temperature of 39 deg. C.

The measured temperature coefficient of the newly assembled transfer standard TSA is about 1.5 hops/deg C. When analyzing the data, the points where the temperature gradient is too high, in the beginning, and  where the standard has reached the equilibrium, towards the end, has been ignored. The first fit in the plot is made using all the data under consideration. The second fit is made by decimating the data in order produce equally spaced data and thus remove the bias that arises for having more data at lower temperature difference. The difference in temperature coefficient is minimal from these two different methods.

All the data and the jupyter notebook used to analyze the data can be found here:

/ligo/svncommon/CalSVN/aligocalibration/trunk/Projects/PhotonCalibrator/measurements/LabData/TSA_TSB/t2021-10-13T103030/ 

(Kyle R., Travis S., Gerardo M.)

As previously noted in Kyle's entry, to position the new turbo pump station inside the VEA was a bit more involved than just pushing it into place.  After some measurements of the VEA components, the use of the crane to move the new turbo pump station was rejected, the measurements revealed that there was no room to move the station over the huddle of cleanrooms in a safe manner.  Plan B, we opted to move the staircase with the crane a bit, enough to allow the station to squeeze by and get it to near its final location.  The staircase was moved back to its initial position.  Also, GV18 was not operated.

(Travis S., Gerardo M.)

We ran the autofill script 3 different times, 2 times with a successful result per the script, and one time the script stopped due to temperature error as reported by the thermocouple, settings are as shown when the script is ran.

First time running the script, overfill noted via one of the site cameras.  Script results below:

~./CP1_Fill.py 100 -130 600
CP1 Fill completed in 27 seconds. Starting CP1 fill. LLCV enabled. LLCV set to manual control. LLCV set to 100% open. Fill completed in 27 seconds. TC B did not register fill. LLCV set back to 34.5% open.

Second time running the script, some LN2 noted via the site camera, but it does appear as if it was successful due to the temperature reported by both TCs.  Script results below:
~./CP1_Fill.py 100 -150 600
CP1 Fill stopped, TE error. Starting CP1 fill. LLCV enabled. LLCV set to manual control. LLCV set to 100% open. TC A error. TC B error. Fill stopped. LLCV set back to 34.5% open.

Third time running the script, Travis ran the script and I was present by the discharge line, visually noted LN2 flow.  Script results below:
~./CP1_Fill.py 100 -130 600
CP1 Fill completed in 21 seconds. Starting CP1 fill. LLCV enabled. LLCV set to manual control. LLCV set to 100% open. Fill completed in 21 seconds. TC B did not register fill. LLCV set back to 34.5% open.

Today on the PSL we took beam measurements, and started the modifications for revisiting the Faraday alignment.

Measurements:

• changes to L1 and L2 from mode matching to the first amplifier
  • NPRO to L1: this is measured with zero at the front of the body of the NPRO.  From the front of the NPRO to M01 = 6.5cm, and M01 to L1 = 2.7cm, combining those gives an NPRO to L1 distance of 92mm, L1's previous position from the NPRO was 98mm. 
    • L1 moved = -6mm.
  • M03 to L2:  M03 is at 1.414m from the NRPO, L2 was at -35mm from M03, at 1.379m, before the move, and now L2 is -50mm from M03, at 1.364m, so L2 moved towards the NPRO by 15mm total. 
    • L2 moved = -15mm
  • the numbers for L2 don't take into account the faraday's DKDP
• the NPRO beam was measured to have wiast sizes of 170um, and waist positions at -106mm, which roughly matches an earlier measurement
• downstream of the faraday, the beam has shifted in yaw, presumably when we adjusted L1 pitch and yaw, and the beam is now miscentered in yaw on L2
• power through the Faraday:
  • measured at 1.8W from the NPRO:  before the faraday = 1.59W, after the faraday = 1.406W, 88% through
  • measured at 110mW from the NPRO: before the faraday = 98mW, after the faraday = 109mW, 90% through
• the rail that was installed to measure the beam profile after M03 is removed from the table, but blocks remain on the table to reinstall and return to the previous position.  For reference:
  • from M03 to Neo1 (the first amplifier) is 450mm
  • when the WinCam sensor is at 35.3cm on the rail, it's at the position of the Neo1 input window
  • 450mm to Neo1 = WinCam senosr at 35.3cm on the rail
  • beam waist is at 29.3cm on the rail
• prep for faraday measurements:
  • the rejected beam from the first polarizing beam cube had it's razor blade dump swapped out for a 70W beam dump
  • the first HWP, before the beam cube, was roatated to reduce the power in the main beam, dumping most of it into the newly installed 70W beam dump
  • after rotating the HWP the power in the main beam path is ~110mW
  • this configuration is how we left the table for the weekend

Attached:

• pictures 1-2: rail used on M03 transmitted beam
• picture 3: the beam as it enters the first amplifier (Neo1 input window, 35.3cm on the rail)
• picture 4: higher order modes (seen only in beam scan 5cm+ beyond Neo1 input window, 40cm+ on the rail)

- Cheryl, Varun

I had to waste invest more time than expected to reverse engineer some differences between the "as built" wiring terminations vs. the drawings but was able to figure it out eventually.  Next week, we'll use the existing iLIGO pump system as standby during the vent.  Once the vent is completed, we will then remove the iLIGO Turbo Station and the iLIGO 10" isolation gate valve and install a new VAT gate valve and the -v1 Pfeiffer Turbo Station.  We will then pump back down using the hybrid setup consisting of the new Pfeiffer Turbo backed by the iLIGO Edwards QDP80 backing pump by using a custom control cable.  Once the recovery pump down is done and the pumps shut down, the iLIGO QDP80 will get replaced with a new HEPTA pump and then both newly installed pumps can be brought up to the current revision.  In a perfect world, this could happen ;)

Mitchell and I finshed all of the OFI shroud brackets and got the last roof panel on that we didn't finish yesterday with Betsy. Next up will be to add the input and output shroud panels, and then what we have of the side panels. Following that we will align the panels and tighten down all of the hardware.

J. Kissel

Just in time (see LHO aLOG 60078), I've finished designing the MEDM screens for the HAM Piezo Double Suspensions (HPDSs), and filled out all the macro files, set up the EPICs parameters and filled out the foton files, and saved settings to the safe.snap of the SDF systems involved for ZM2, ZM4, and ZM5.

These new screens are now call-able from the sitemap as any normal suspension; ZM2 is under the SQZ IN menu, and ZM4 and ZM5 are in the SQZ OUT menu.

This is a resumption, continuation of, and completion of the work started in LHO aLOG 59696, and the comments there-in. The upper half of the HPDS OVERVIEW screen, controlling the M1 top mass stage is virtually identical to the ZM6 HSDS infrastructure. The lower stage brings to life the rudimentary fast front-end Simulink and Beckhoff control system that Daniel put together (see LHO aLOGs 59992 and 59993, respectively) that should get us through testing and commissioning this stage. Of course, I'd like to see this rudimentary infrastructure filled out more, so I include some wishful thinking on the screens, in hopes to guide future development.

I also note that this is the first SUS that's being driven and sensed by complete mish-mash of fast ADCs and DACs in the MER, a fast DAC in the CER, and some beckhoff ADCs for the PZT monitors and strain gauge readout. Quite a challenge for the MEDM macro system!

New screens have been committed to
    /opt/rtcds/userapps/release/sus/common/medm/hxds/
        SUS_CUST_HPDS_OVERVIEW.adl
        SUS_CUST_HPDS_M2_STRAINGAUGE.adl
        SUS_CUST_HPDS_M2_STRN2DEFOCUS.adl
        SUS_CUST_HPDS_M2_PSAMS_DRV.adl
        SUS_CUST_HPDS_M2_PZT_MON.adl
        SUS_CUST_HPDS_BIO_ALL.adl

the screenshots for which are shown in that order, using the ZM2 instantiation.
The macro files that support them have been updated,
    /opt/rtcds/userapps/release/sus/common/medm/
        suszm2_overview_macro.txt
        suszm4_overview_macro.txt
        suszm5_overview_macro.txt
such that, LLO only has to svn up these directories (and link them in the right way to their sitemap) to receive the goodness.

Everything should be ready to go for testing when Nidhi, Fred, and Rahul get to it!