JimW, MitchellR & Hugh

We leveled and elevated the BSC2 (BS) ISI Optical Table.  Nominal elevation is 1661.7mm(G=L at BSC2) less 2.9mm because of the air gap in the SYS SW modeling (DCoyne email 20120926).  Additionally, IAS reports the BS optic ended Test Stand Alignment 0.32mm high wrt optical Table(DCook percomm.)  So, I set the Optical Table at 1661.7- 2.9-0.3=1658.5mm; see attached for my surveying notes.

Synopsis: Ave elevation 1658.5+-0.1mm.  The HEPI Springs range from 1940 to 2150lbs, w/ 85lbs rotation effort--that isn't too bad.  Dial indicators suggest we have pulled west ~1mm & south ~1/2mm since Cartridge install, again not too bad.

Before the power outage of next week, new h1sus${mc1/mc2/mc3/prm/pr2/pr3}safe.snap files have been saved in /opt/rtcds/userapps/release/sus/h1/burtfiles.
It includes alignment offsets with the right values from aLog 5851 for PR3/PR2 and 5825 for MC1/MC2/MC3. It also includes the ODC recent update aLog 5809

The safe state has been defined as the following :

**alignment offsets off
**damping filters on
**master switch off

The snap files have been commited in the svn repository.

 

848 - Safety Kleen onsite for Mark H

930 - RO unit alarming periodically all morning as a result of normal flushing behavior; Ski is working on it.

1050 - Dave B restarting H1SUSB123

1240 - Dale hosting control room tour with local fifth graders

1310 - Sheila and Chris to EY.

1330 - Timing errors on I/O chassis at EY.

1430 - 1530 Dave B power cycling chassis at EY and investigating burning smell.

1500 - Betsy working in HAM2

1500- Michael and Pablo working in H2 PSL Enc

A while back, Dave Barker created a h1susauxb123 model by adapting the h2susauxb478 model. It was a quick first approximation which just deleted the FMx and FMy sections and the corresponding three extra DAC cards, and it had sat around uncommitted to the SVN.

Today I checked it against the circuit diagram D1100022-v9, fixed a few errors, and committed it. Dave plans to install it tomorrow during maintenance and try it out.

The NSF Storage Review will occur here on 09 April 2013. Prep work is going ahead on several fronts: LVEA-West Bay, Y Mid, and X Mid.

-In the West Bay, one section of the western-most pallet rack has been cleared of everything but 3IFO-related items. Items in this rack are currently labelled either for India or 3IFO. (2 pix below) As soon as possible, we will install a gate on this section to create a controlled inventory area. Three Triple Suspensions are stored in the Meat Locker (barrels ratchet strapped to pallets, ratchet handles zip-tied with tamper-evident serial numbered tags). (2 pix below)

-At Y Mid, a series of activities is in progress. TCS Optical Tables were stacked and rotated to create a forklift path through the outer receiving bay. This path will be continue through the middle bay to the VEA. A crane set-down/forklift turn-around area will be marked out in the yellow and black hazard tape: please DO NOT store anything in this stay-clear area. Sixteen(4 chambers-worth) iLIGO external SEI isolation units have been stored in the middle bay and VEA: they are being migrated out to the LVEA where they will be stored until they are installed on H2 HAMs. The OpLev first article test set-up is being removed and the grout pads cleared. Several 3IFO PSL crates have been identified and will be sealed ASAP: several additional PSL-related crates need to be identified. One PSL Chiller crate has been sealed with tamper-evident tape for testing purposes. Two TMS Upper Structure crates have been identified and labeled. One TMS US crate has been sealed with silver serial-numbered tamper-evident tags for testing purposes. Three unidentified crates are in the middle bay along with an electrical rack. The electrical rack needs to be de-populated and Richard will take care of that when convenient. The tentative long-term storage plan calls for all 3IFO storage at Y Mid to be in the VEA and the VEA locks will be changed to provide controlled access.

-At X Mid, a few activities will be under way this week. A forklift path will be cleared from the outer roll-up door through the middle bay to the VEA. A crane set-down/forklift turn-around area will be marked out between the inner roll-up door and the beamtube. The forlift path and the crane set-down area will be marked out in the yellow and black hazard tape: please DO NOT store anything in these stay-clear area. OpLev piers (some coming from other out buildings)will be concentrated to the VEA. Giraffe crates (already in place) and shortie crates will be sealed. The tentative long-term storage plan calls for 3IFO storage to occupy most of X Mid and outer man-door locks will be changed to provide controlled access.

The Apollo crew and I will continue to work on 3IFO LTS issues through 08 April as the opportunity arises.

Jim, Mitchell & Hugh

Jim went in chamber to assist Betsy with Baffle hanging while Mitchell & I did the final dressing of the sensor cables.  We followed protocol (T1200193) to insure consistent grounding of the GS13 seismometers.  The sensor cables where then checked with the emulator to confirm good & right cables.  All checked out and then were plugged in.  All sensors now functional.

Next we checked the zeros on the HEPI Load Cells, all below 20lbs.  Continued then with HEPI loading after the horizontal locks were pulled back.  All corners now floating.  We are ready to level and elevate the ISI Optical Table in prep for IAS.

This morning, I hopping into the chamber and plugged in our 3 SUS 25 pin feedthru connections.  Richard turned power on to enable sus controls.  Arnaud fixed some model errors.  The BS is not suspended yet as some coarse SEI balancing and alignment is up next.

Then, Jim and I hung the 2 Elliptical Baffles from the suspension downtubes mounted on Stage 0.  The cartridge is fully payloaded now.

   After updating incorrect matrix values in MEDM, we reran the TFs on I1-MC3. The results look much better. There are several small non-modeled peeks near or below 0Hz in the L, R, and Y DoFs and some noise in T just below 0Hz in the undamped plots. These are mostly removed from the damped plots. The comparison plots show all these non-modeled peeks are in line with similar non-modeled peek present in other suspensions. Waiting for Testing Group to review data before making any changed to I1-MC3.   

(Sheila, Max, Chris)

On Friday we uncovered a snafu with the slow controls cabling at the Y end.  The connector labels engraved on the rear panel of the "End 2" EtherCAT chassis (Exhibit A) do not agree with the chassis wiring plan (Exhibit B).  Upon opening the chassis it appeared that the internal wiring to the Beckhoff modules was done according to (B), whereas the external cable runs had been connected relying on (A).  Here's a table showing the correspondences:

Port
Wiring plan
Rear panel description
6
Auxiliary
DC Photodiodes
7
PZT Mirrors/PDs/Laser Temp
Auxiliary
8
TCS
PZT Mirrors/PDs/Laser Temp
9
RF Amplifiers
TCS
10
DC Photodiodes
RF Amplifiers
11
LSC Demodulators
LSC Demodulators
12
Laser Diagnostics
Laser Diagnostics

This problem came to our attention after we noticed that the fiber PLL slow path (laser temperature) control output was broken.  Actually it was just routed onto the wrong cable.

Attached images show the interior and rear panel of the End 2 chassis at the Y end.

Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot requested from 5 PM March 20 to 5 PM March 21. Also attached are plots of the modes to show when they were running/acquiring data.

Data was taken from h1nds1.
T0=13-03-21-00-00-00; Length=86400 (s)
1440.0 minutes of trend displayed

Attached are plots of dust counts > .3 microns and > .5 microns in particles per cubic foot requested from 5 PM March 21 to 5 PM March 22. Also attached are plots of the modes to show when they were running/acquiring data.

Data was taken from h1nds1.
T0=13-03-22-00-00-00; Length=86400 (s)
1440.0 minutes of trend displayed

All the ISI cabling has been dressed and run to the feed-thrus.  They are connected to the feedthrus; some but not all are disconnected from the sensors.  The racks are currently off.  We will perform emulation check outs before the sensors are wired and powered.  This should go quickly.  The baffles are not hung but can be now.

Please do not power on the BSC2 ISI seismometer racks.  The CPS are on but all others are off and should remain so.  A few images below for the ages.

Day's Activities:

Baffle crew finished up their week's work in their cleanroom

Betsy heading into BSC2

PCal peeps working in H2PSL Anteroom in afternoon (Pablo, Gregario, & Craig)

Arnaud running quick measurement on ETMy at ~11:00am

rebooting model for SUS BS (Barton)

HAM2 work in afternoon (Betsy)

EY ISC work (Sheila)

SEI crew is working in and around BSC2 (Hugh, Jim, Mitch)

Alarms:

RO Alarm this morning ('Ski notified)

DUST: 

• Optics Lab Dust INVALID alarm
• HAM2 Cleanroom Dust alarm--this one has been alarming all day (with MAJOR alarm set at 200 counts, but every time I looked out there, no one was working out there.)  So, I changed the alarm setting.
• H2 PSL Enclosure MINOR alarm, most likely due to Pcal dudes.

Dust Monitor #8 = HAM2 Cleanroom (as of 3/18/13)

During my two shifts this week, I noticed this dust alarm having MAJOR alarms throughout the day, and most of the time, I'd check and see no one inside or near the cleanroom.   Generally the alarm would only last one cycle (~1min) & then clear.

The MAJOR setting was set at 200counts for 0.3um & 0.5um.  I increased it to 300counts & we'll see how it goes.  (this was done by changing values on the Alarm Settings medm window for Dust Alarm #8)

(at the moment, we have Travis & Betsy in the cleanroom working inside of HAM2 and the counts are 0.)

Mark B. Arnaud P

After Betsy realized the range of the ALIGNMENT OFFSET slider was much greater than the real actuation range (see alog entry 5852), we decided to change the max and min values of the slider for all the suspensions. For now only HSTS and HLTS medm screens have been modified. BSFM and ETM/ITM will be done after verification of the actual range.
The actuation range is limited by the DAC ouptut (2^18/2=131072), which can be transposed in urad for Pitch and Yaw. The chosen numbers can be found in the following documents (HLTS and HSTS), in the spreadsheet page 3.

https://dcc.ligo.org/DocDB/0100/T1300083/001/T1300083-v1.pdf
https://dcc.ligo.org/DocDB/0100/T1300079/001/T1300079-v1.pdf

Now the sliders go from +/- 4195 for HSTS Pitch, +/- 7828 for HSTS Yaw, +/-4409 for HLTS Pitch, and +/- 1708  for HLTS Yaw (see pictures attached)

Technical details

In order to do that :

Created two adl files in /opt/rtcds/userapps/release/sus/common/medm/hxts
SUS_CUST_HSTS_M1_OPTICALIGN.adl
SUS_CUST_HLTS_M1_OPTICALIGN.adl
copied from
SUS_CUST_HXTS_M1_OPTICALIGN.adl

opened
SUS_CUST_${HLTS/HSTS}_OVERVIEW.adl in edit mode with medm
changed the name of the argument calling the adl file from SUS_CUST_HXTS_M1_OPTICALIGN.adl to SUS_CUST_${HLTS/HSTS}_M1_OPTICALIGN.adl

opened
SUS_CUST_${HLTS/HSTS}_M1_OPTICALIGN.adl with medm

changed the range
for HLTS  
from +/-12300 urads to +/-4409 urads for PITCH
from +/-12300 urads to +/-1708 urads for YAW   

for HSTS
from +/-12300 urads to +/-4195 urads for PITCH
from +/-12300 urads to +/-7828 urads for YAW  

Modified the label above the gain from :
[DAC Counts (in EULER Basis)] into [Counts (in EULER Basis)]

svn added and commited the new and modified files in the following folder : /opt/rtcds/userapps/release/sus/common/medm/hxts

Here are the Tfs and Spectra Test results for I1-MC3.

Betsy noticed that the BS screen was in a bad state, with gains and offsets and matrix values not filled in, despite the fact that I'd done setup on it back on 2/18 (alog 5440). It turns out it was because although I'd created 

/opt/rtcds/userapps/release/sus/h1/burtfiles/h1susbs_safe.snap

there was no symbolic link

/opt/rtcds/lho/h1/target/h1susbs/h1susbsepics/burt/safe.snap 

pointing to it. So after the various restarts between now and then it was not getting correctly restored. I created the link and checked that the correct settings were loaded when I restarted the model.