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Reports until 11:24, Wednesday 04 December 2013
H1 INS
jim.warner@LIGO.ORG - posted 11:24, Wednesday 04 December 2013 (8812)
BSC6 Cartridge De-install Complete

Bubba, Randy, Scott, Tyler, Ed, Mark, Corey, Jim

Yesterday, we completed the removal of the BSC6 cartridge. The assembly is now resting comfortably on the test-stand, 180 degrees to it's final in-chamber position (necessary for cleanroom clearances). Both suspensions are covered, and the ISI has 3 separate covers. No unusual difficulties beyond some misplaced hardware, but Apollo took an early lunch so I could scramble and find it.

H1 IOO
stefan.ballmer@LIGO.ORG - posted 11:05, Wednesday 04 December 2013 - last comment - 11:44, Wednesday 04 December 2013(8811)
EOM RF return loss measurement after the latest phase jump
Kiwamu, Stefan

Attached is a new RF return loss measurement for the EOM cable taken at the PSL rack end. This was taken after the latest RF phase jump.
As before, the marker labeled 24.08MHz is at the actual IMC modulation frequency of 24.078360MHz.

Compare this to alog 7959 (before RF jump).
Images attached to this report
Comments related to this report
stefan.ballmer@LIGO.ORG - 11:25, Wednesday 04 December 2013 (8813)
Kiwamu repeated the measurement directly at the EOM, and he was able to jump between the two setting by pushing at the EOM's Sam connector.

Conclusion: a bad connector at the EOM is responsible for our phase jumps.

rich.abbott@LIGO.ORG - 11:44, Wednesday 04 December 2013 (8814)
The resonant frequency of the notch appears to have changed such that one could reasonably account for the phase shift.  The million dollar question is how?  Either the tuning has bistable states (such that a mechanical tuning screw clicks between two states) or the external loading changes due to a bad connection to the EOM.  It seems the latter has just been identified by Stefan...
H1 IOO
kiwamu.izumi@LIGO.ORG - posted 06:07, Wednesday 04 December 2013 (8807)
further alignment of IMC

Sheila and Kiwamu

We improved the clipping of the IM1 trans beam by moving the uncontrolled degree of freedom in the IMC alignment control.

As a result, the amount of the light detected at the trans PD went up from about 240 counts to more than 800 counts. Also the beam shape on the camera became more round-looking.

 

The clipping was mainly in yaw. The shift we introduced was visible in the IM4 trans QPD. The spot moved in yaw from -0.3 to 0.

The screen shots below are the current alignment settings that gives a less clipping on the IM1 trans beam. Note that we didn't touch IM1-4 suspensions.

Images attached to this report
H1 IOO
kiwamu.izumi@LIGO.ORG - posted 17:39, Tuesday 03 December 2013 - last comment - 23:13, Wednesday 04 December 2013(8805)
IMC alignment much better, WFS loops engaged, but IM1 trans light seems clipped in chamber

Stefan and Kiwamu

We continued working on the alignment of IMC today. We managed to get the alignment back i.e. the beam hits the center of the IM4_TRANS QPD with all WFSs in action. It is now happiy locking.

However, we found that the IM1 trans path, which is used for a camera and trigger PD, seemed clipped. By moving the mirrors on IOT2L, we concluded that the clipping happened in chamber, namely in HAM2. This is not a critical issue as this light is used only for triggering purpose and it still gives a reasonable amount of the light. We will keep studying what is happening in the chamber. Perhaps this could be due to the uncontrolled degrees of freedom in the IMC alignment control.

 

What we did:

Comments related to this report
sheila.dwyer@LIGO.ORG - 23:41, Tuesday 03 December 2013 (8808)
This evening Kiwamu and I tried to mitigate the clipping of the im4 Trans beam by putting some angle offsets on mc2 and mc3 while the wfs loops were locked. The hope was that this would change the uncontrolled dofs, while the loops keep the others under control. We used the pico motors to keep the spots centered on the wfs, and had to take small steps. We had to go out to the table and realign the whole path after a few iterations because the power on the lsc pd was dropping. This is a slow process, and didn't fix the problem, the shape of the beam on the imc trans camera did improve. Before and after pics attached
Images attached to this comment
stefan.ballmer@LIGO.ORG - 08:38, Wednesday 04 December 2013 (8809)
Comments on the 5th or 6th phase rotation of the IMC:

We are now using the I demod output for IMC locking. The delay line settings are:
1/16:Up 1/8:Dn 1/4:Up 1/2:Up 1:Up 2:Up 4:Up 8:Dn 16:Dn

The WFS phase settings are:

H1:IMC-WFS_A_SEG1_PHASE_R = -90
H1:IMC-WFS_A_SEG2_PHASE_R = -17
H1:IMC-WFS_A_SEG3_PHASE_R = -27
H1:IMC-WFS_A_SEG4_PHASE_R = -22
H1:IMC-WFS_B_SEG1_PHASE_R = +15
H1:IMC-WFS_B_SEG2_PHASE_R = -34
H1:IMC-WFS_B_SEG3_PHASE_R = +28.5
H1:IMC-WFS_B_SEG4_PHASE_R = -81

For previous rotations, see Oct 1st alog 7941.


kiwamu.izumi@LIGO.ORG - 23:13, Wednesday 04 December 2013 (8827)

There is a similar report from the last May (alog 6265). I wonder if an optic is loose somewhere in this path.

H1 CDS (DAQ)
david.barker@LIGO.ORG - posted 16:56, Tuesday 03 December 2013 (8806)
CDS Maintenance Summary

Sysadmin tasks: Patched internal machines accessible from outside of CDS. Performed nmap network scans on 10.20.0.0/24 and 10.101.0.0/24 subnets. Updated network drawings

h1asc0: Replaced the h1asctt model with the new h1sushtts model.

updated the H1EDCU_DAQ.ini file to trend status of all models. Updated autoBurt.req for DAQ frame writers to archive all EPICS channels associated with these systems.

Updated overvew MEDMs (for ASC TT change)

Multiple DAQ restarts were required to support these changes.

LHO General
gerardo.moreno@LIGO.ORG - posted 16:12, Tuesday 03 December 2013 (8804)
Ops Summary

- FM-200 Systems (OSB and LSB), annual inspection took place today.
- Apollo at Y-End, working on extraction of cartridge out of BSC06.
- Baling crew @ Y-arm, baling tumbleweeds, now at X-Arm, opening a path.
- Kiwamu and Stefan, working on IMC recovery.
- Dave, some DAQ reboots.
- Thomas, to LVEA, connected TCS ring heater for ITMY.

LHO VE
kyle.ryan@LIGO.ORG - posted 15:59, Tuesday 03 December 2013 (8803)
LVEA purge-air fixes complete but particulate levels not measured
Kyle, Gerardo 

Repair of the drying towers is done but the purge-air supply isn't available to the LVEA yet -> We still need to devise a method to demonstrate the effectiveness of the removal of the alumina dust before routing the dry air through the final filtration stages and on to the LVEA
H1 SEI (SEI)
hugo.paris@LIGO.ORG - posted 15:34, Tuesday 03 December 2013 (8802)
IMC HAM-HEPI Controlled

HEPI common parts were updated yesterday per WP #4315

HEPI-HAM2 and HEPI-HAM3 were turned ON using the new Command scrips (Command2 Button from the overview screen).

They are running on their respective position loops, with the generic position blend filters (L4C=0, IPS=1).

Both HEPIs are aligned to the initial alignment position (aLog 7180)

 

HAM2 alignment TARGET (nm or nrad):

X -34219.8
Y -28697.6
Z -49473.8
RX 8810.3
RY -67894.6
RZ -20905.3
HP 30465.4
VP 16344.5

 

HAM3 alignment TARGET (nm or nrad):

X -3129.6
Y 106783
Z -104514
RX -23729.6
RY -25190.7
RZ 123598
HP 87442.4
VP 200991
H1 INS (INS)
jodi.fauver@LIGO.ORG - posted 14:48, Tuesday 03 December 2013 (8800)
ETMY Install Prep: BSC6 De-install
I worked on putting together a Contamination Control cart (CCC) as Calum requested while he was visiting. It is at Y End. The cart contains most of the components for a clean Top Gun Ionizer set-up (Top Gun, regulator, wrench, and hoses but no N2), a Tiger Vac with hose and attachments, a power strip, Alpha 10 wipes, a flashlight array with extra batteries, and Class B glass bottles for IPA. The cart and contents are covered in C-3. Please see pix below. Feel free to use the cart for Clean as You Go activities and then let me know how the cart can be improved. 
Non-image files attached to this report
H1 SUS (INS, IOO, ISC)
jeffrey.kissel@LIGO.ORG - posted 12:44, Tuesday 03 December 2013 - last comment - 14:52, Tuesday 03 December 2013(8798)
HTTS / HAUX Models Installed
J. Kissel, D. Barker

There was a significant amount of extra work installing the new HAUX and HTTS models on their respective front ends, so I detail below.

${userapps}/sus/${ifo}/models/${ifo}sushtts.mdl
------------------------------------
- Make sure to remove ${ifo}asctt and replace with ${ifo}sushtts (or capitalized version, when appropriate) in the following files:
    - /diskless/root/etc/rtsystab (on boot machine, i.e. ${ifo}boot0)
    - ${userapps}/release/cds/${ifo}/daqfiles/${ifo}dc0/master
      (which hopefully is the source of the softlink in /opt/rtcds/${site}/${ifo}/target/${ifo}dc0/)
        - the framebuilder's .ini file, 
        - the test point manager's .par file, and 
        - the EPICs database's EDCU .ini file
    - ${userapps}/release/cds/${ifo}/daqfiles/${IFO}EDCU_DAQ.ini
- Log onto ${ifo}build front-end
    - make ${ifo}sushtts
    - make install-${ifo}sushtts
- Log onto ${ifo}asc0 front-end
    - kill${ifo}asctt   (Needs to be removed from front-end kernel, since it'll no longer be used)
    - start${ifo}sushtts


${userapps}/sus/${ifo}/models/${ifo}susim.mdl   (much more simple, more typical since the model already exists)
------------------------------------
- Log onto ${ifo}build
    - make ${ifo}susim
    - make install-h1susim
- Log onto ${ifo}sushh2b
    - start${ifo}susim

Since there are a ton of new channels, one will need to restart the data-concentrator,
- telnet h1dc0 8087
> shutdown

And for good measure (because it seemed to be running slowly), we restarted the EPICs gateway, but this isn't necessary.


Stay tuned -- a plethora of MEDM screen modifications are next!
Comments related to this report
keith.thorne@LIGO.ORG - 14:23, Tuesday 03 December 2013 (8799)
I think the second section should actually be
${userapps}/sus/${ifo}/models/${ifo}susim.mdl   (much more simple, more typical since the model already exists)
jeffrey.kissel@LIGO.ORG - 14:52, Tuesday 03 December 2013 (8801)CDS, INS, IOO, ISC
Fixed. Thanks Keith!
H1 IOO
kiwamu.izumi@LIGO.ORG - posted 09:02, Tuesday 03 December 2013 (8792)
IMC recovery part I : IOT2L in place, modulation phase rotated again, Beckoff is not running

Stefan and Kiwamu

This is an alog which I was going to post yesterday but hesitated to post as Stefan already posted his one (see alog 8791).

We are still in the process of recovering the IMC locking. The alignment got back to an OK state where we can try locking the IMC, but currently it is prevented by the corner Twincat as it is unable to control the common mode board for some reason.

Here is what we did today:

 

The attached is the initial alignment of the day where we could get a decent flash.

Images attached to this report
H1 AOS (AOS)
thomas.vo@LIGO.ORG - posted 00:43, Tuesday 03 December 2013 (8796)
PRMI Optical Levers
ITMX: Approximately 80% installed, still need to run cables and plug in electronics as well as connect the enclosures to the viewports, this requires a work permit so I'll wait till later today to get one signed.

Beamsplitter: Data has been taken to calibrate the optlev signals using the M1 and M2 stage OSEMS, will analyze later today and append a graph to compare to other methods of calibrating.
H1 SUS (CDS, IOO, ISC)
jeffrey.kissel@LIGO.ORG - posted 22:54, Monday 02 December 2013 (8795)
HAUX / HTTS Infrastructure Mods -- Models Finished, Successfully Compile. Installation and MEDM Screens Tomorrow.
J. Kissel, D. Barker

After consulting with Dave this morning, and him snooping around a bit, it turns out the compilation failure of the h1sushtts.mdl (see LHO aLOG 8777) was just a stupid mistake of an extra carriage return under the OM3 block. Sheesh. 

The new HTTS front-end model,
${userapps}/release/sus/h1/models/h1sushtts.mdl
now compiles just fine. In addition I've moved on to and finished the same upgrade to the HAUX front-end model,
${userapps}/release/sus/h1/models/h1susim.mdl

I'll reinstall, restart, and restore tomorrow during maintenance and then begin the process of updating the MEDM screens with the hopes to be done by the end of the day. That will FINALLY close out the modifications to ALL SUS from ECR E1300578.

LHO General (CDS, PEM)
patrick.thomas@LIGO.ORG - posted 17:57, Monday 02 December 2013 (8794)
IOC for dust monitor at end X restarted
It appeared this morning that the IOC for the dust monitor at end X had stopped. When I telneted into the procServ process on h0epics, it seemed to automatically start running again with no other action on my part, which is strange. It still required renabling the dust monitor and burtrestoring it however.
LHO General
patrick.thomas@LIGO.ORG - posted 17:28, Monday 02 December 2013 (8793)
Ops Summary
Corey going to end X to get items for end Y work
Cleaning at end Y
Thomas V. turning on LVEA optical levers

08:43 Justin checking the state of the LVEA South Bay in preparation for later isolated laser hazard work
10:13 Kiwamu and Stefan installing light pipes between HAM2 and IOT2L
12:51 Aaron swapping ISC HAMA coil drivers in CER
13:03 Keita, Corey and Jim going into the end Y chamber to disconnect cables and secure the TMS in preparation for the cartridge removal
13:25 Justin transitioning the LVEA to laser HAZARD

WP signed: 4312, 4313, 4314, 4315
H1 AOS
keita.kawabe@LIGO.ORG - posted 15:59, Monday 02 December 2013 - last comment - 07:45, Tuesday 03 December 2013(8790)
H2 TMSY deinstall: We need a sock (Corey, Jim, Keita)

We did everything we needed to allow people to move the ISI out except to cover the entire TMSY with a quad sock. We couldn't find one. Something for tomorrow.

TMS EQ stop thing from BSC6 was moved to BSC10 (it's sitting on the floor in the chamber).

Comments related to this report
corey.gray@LIGO.ORG - 07:45, Tuesday 03 December 2013 (8797)

Also:  all in-vac cables were also disconnected from feed-thrus.  Cable clamps for these cables for these cables were also removed and all these cables are dangling down from ISI (Jim will pull them up and stash up top in the morning.

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