Mobility exp. wafer holder added to HAM3

See attached PDF for approximate location of the silicon wafer holder used for the mobility experiment.  It is bolted to the top of the SEI payload mass on the west side of the chamber.

sus filter files modified

After the recent sus model changes (ECR E1300578), and since some channels have been deleted, we were seeing in foton the kind of errors described below, when opening a filter file  :

line 500: Unknown filter module PR2_M1_OFFLOAD_RX line 501: Illegal filter section: -1.1136890503818733 0.6048077715301807 2.0000000033150198 1.0000000033159222
line 497: Design for unknown filter module PR2_M1_OFFLOAD_RX

In order to fix it, and from Jim B's suggestion, every text file containing an error have been opened and saved under foton (apparently, foton would automatically delete the non existing channels and filters from the textfile).

This has been done for : ITMX ITMY ETMY MC1 MC2 MC3 SRM SR2 SR3 PRM PR2 PR3

Attached are the logs of what have been done so far :

1) svn_diff shows the change between the filterfile on the svn (saved before model changes) and the filterfile after the model changes

2) diff_old_new shows the change between the filterfile before and after resaving it with foton

The new filterfiles have been commited under revision 6437 of the svn

Ops DAY Summary

Day's Activities (from 8am-2pm, Dale covered the end of my shift)

Cleaning at EY (causing dust alarms)

Yawing the EX TMS

Frank will be heading to EX to do some electronics documentation (& possibly to EY afterward)---this should only be during the morning

Kiwamu is measuring power at H1 PSL

Kyle is soft-closing GV17 for spool/annulus work

Koji & Rich working at HAM6

First Contacting HAM3 this morning (& maybe BSC3 this afternoon)

Restarting h1omc for a new model (Dave)

Test Dust Monitor code at all locations (Patrick)

Dust Monitor #9 in the LVEA has been having status alarms throughout the day

Baling on X-arm

Insulation on Yarm (Y1)

Testing dust monitor IOCs with procServ

(WP 4287)

Related alogs: 8600, 8475, 8294, 8207, 8200, 8164, 8076, 8055, 7768

I'm trying to see if the dust monitor IOC crashes are due to the virtual terminals hosted by 'screen'. To this end I am trying 'procServ' instead. I stopped the IOCs running in 'screen' on h0epics and started them with 'procServ'.

Equivalent commands:

As controls on h0epics:

cd /ligo/home/patrick.thomas/epics/iocs/dust/dust_met_one_227b_comp_ctrl/iocBoot/ioch0_dust_lvea
procServ -q --noautorestart -n "h0dustlvea" 20000 ../../bin/linux-x86_64/dust st.cmd

cd /ligo/home/patrick.thomas/epics/iocs/dust/dust_met_one_227b_comp_ctrl/iocBoot/ioch0_dust_lab
procServ -q --noautorestart -n "h0dustlab" 20001 ../../bin/linux-x86_64/dust st.cmd

cd /ligo/home/patrick.thomas/epics/iocs/dust/dust_met_one_227b_comp_ctrl/iocBoot/ioch0_dust_ey
procServ -q --noautorestart -n "h0dustey" 20002 ../../bin/linux-x86_64/dust st.cmd

cd /ligo/home/patrick.thomas/epics/iocs/dust/dust_met_one_227b_comp_ctrl/iocBoot/ioch0_dust_ex
procServ -q --noautorestart -n "h0dustex" 20003 ../../bin/linux-x86_64/dust st.cmd

cd /ligo/home/patrick.thomas/epics/iocs/dust/dust_met_one_227b_comp_ctrl/iocBoot/ioch0_dust_dr
procServ -q --noautorestart -n "h0dustdr" 20004 ../../bin/linux-x86_64/dust st.cmd

As controls on opsws1:

cd /ligo/cds/lho/h0/burt/2013/11/19/11:00
burtwb -f h0dustlvea.snap 
burtwb -f h0dustlab.snap 
burtwb -f h0dustey.snap   
burtwb -f h0dustex.snap 
burtwb -f h0dustdr.snap

matlab tfs (2)

The modification we made yesterday on our matlab script seems to have resolved our issue. I commited get_sch_TF_M0_v9DQ_sma.m under the revision 5873 of the svn

Power measurement and fixing PMC transmission monitor at PSL

I went in the PSL enclosure this morning for:

• measuring beam powers at various points in the downstream of PMC
• and fixing an issue with the PMC transmitted light monitor.

 

Power measurements

This is a part of the effort to get better estimation of how much laser power we will get in the upcoming commissioning test. All the measurement was done with a hand-held power meter, Ophir Vega, and a thermal-type power meter head, 10A-V2-SH. The results are shown below:

 

The issue with the PMC transmission monitor is fixed

After a short shut-down of PSL on 28th of October (alog 8297), we found that the PMC transmission monitor (H1:PSL-PWR_PMC_TRANS) kept showing a very low number e.g. ~ 1.5 W which was supposed to display ~ 12 W. It has been unclear why it happened and what caused it. We started suspecting that somewhere in the analog chain is acting funny. So I took a look at the PD this time. The alignment of the beam on the PD looked good when I looked with a sensor card. Then I started checking the LEMO connector which sends the signal from the PD to the digital system. Surprisingly, disconnecting and re-connecting the LEMO connector at the PD fixed the issue. Also, I was unable to reproduce the same low-readout situation any more. I believe it was due to some sort of loose connection at the connector. Anyway it now displays 11.6 W which is what it is supposed to be. Good.

install new h1omc model, clear stuck SUS excitation test point

Chris, Arnaud, Dave

Chris installed a new h1omc model onto h1lsc0. We got special permission from Mike L to do this during this week's code freeze. After the restart we restarted the DAQ to apply the modified INI file. We found that several other ISC systems had modified INI files which required pressing the "DAQ Reload" button on the following systems: h1lsc, h1asc, h1iscex and h1iscey.

We noticed a stuck excitation test point on h1susitmy (channel 145). We had to perform a "tp clear 30 *" to clear it.

WBSC3 ITMx Alignment, Final Number Collection

• X Axis Position: 5012.75 mm
  • Target: 5012.95 mm
  • Error: -0.2 mm
  • Tolerance: ±3.0 mm
• Y Axis Position: -200.09 mm
  • Target: -200.0 mm
  • Error: -0.09 mm
  • Tolerance: ±1.0 mm
• Z Axis Position: -83.24 mm
  • Target: -83.1 mm
  • Error: -0.14 mm
  • Tolerance: ±1.0 mm
• Pitch¹: 976 µrad down
  • Target: 971 µrad down (619 µrad ITMx pitch + 352 µrad FC correction)
  • Error: 5 µrad down
  • Tolerance: ±50 µrad
• Yaw: 23 µrad CCW
  • Target: 0 µrad
  • Error: 23 µrad CCW
  • Tolerance: ±50 µrad

1: We had to tear down our equipment at the X manifold spool for the spool re-install before the ITMx HR First Contact was removed, therefore we will not get a chance to measure the pitch after the FC removal.  We have to trust that the calculations in E1200791 are correct and the ITMx pitch will be within ±50 µrad of its 619 µrad down target pitch after the FC is removed.

backlog alog - PR3 baffle installed

This alog should have been filed before Jim's below:  Yesterday, Calum and I installed the new PR3 baffle, prior to Jim's balance of the HAM2 table.

IO work in HAM2 and HAM3

- Kiwamu, Keita, Cheryl

- checked MC REFL rerouted as IMC TRANS alignment through the irises and FI and to PSL ISS - good
- checked flashing IMC through irises and FI and to PSL ISS - good
- set up PSL ISS QPD to read the signal from 1064nm light - was able to see DC change with MC REFL beam when blocked and unblocked
- removed iris hardware from HAM3 stage 0
- removed irises from HAM2 table top
- proposed to MikeL that Keita and Kiwamu align the beam to the PSL ISS, now that software is set up - not sure if this happened

Also:
- noted that the PSL ISS was out of position w.r.t. top level assembly drawing for HAM2
- noted that the curved steering mirror for the PSL ISS, AROM RH2, was out of position w.r.t. top level assembly drawing for HAM2
- noted that the baffle, HA11, is out of position w.r.t. top level assembly drawing for HAM2

I've emailed Calum about the position difference of the PSL ISS.

EX work today (Alexa, Sheila, Stefan, Keita)

Reference: TRANSMON ISC EX Layout D1201457

1. Put a reference flat mirror between M5 and telescope, and the beam didn't retroreflect when QPD servo was ON.
   1. This means that the bottom periscope mirror under the TMS ISC table is exonerated.
2. The beam was pretty well centered on M2 but too high on M1 and M3, so changed PIT if M2.
   1. We ended up splitting errors between M8 and M1, M1 being too high and M8 too low but good on M3.
3. Used M3 and M6 to steer the beam spot on the primary and the secondary to mimic what's supposed to be good according to https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=7285.
4. Used TMS BOSEM bias to rotate the entire thing so the beam retro-reflects off of ETMX.
   1. Unfortunately we needed a large YAW offset and the F2 and F3 DAC railed.
5. I'll talk with SUS people to find the best way to mechanically rotate the TMS suspension in YAW. We'll probably move the top blade.

HAM3 ISI Locked, HAM2 ISI Unlocked

This afternoon, HAM3 was locked, to allow various other sub-systems in to take pictures, make adjustments, etc. Meanwhile, Betsy and Calum installed the new baffle at HAM2, so Greg and I were able to go in and refloat that ISI. Somewhere in there, I also reconnected a disconnected CPS sensor. This could have been poorly attached, but I have also heard tell that people have been walking in the nozzles of this chamber. This should be done with extreme caution as the CPS feedthrus are particularly vulnerable, and would probably break if stepped on.

I attempted to start TFs on HAM2, but was foiled by an awgstream issue that I'm not smart enough to fix. Will try again in the morning.

matlab tfs

[Jeff K. Arnaud P.]

The TF of ITMX ran over the week end from matlab 2012b, had the same issue that I encountered on friday morning. The log file saved gives the following error message :

[Warning: Channel H1:SUS-ITMX_L1_WIT_Y_DQ incorrect time 1068669185 (expected 1068669184).]
[Warning: Error in query for H1:SUS-ITMX_L1_WIT_Y_DQ: unknown error]
[Warning: Response channel H1:SUS-ITMX_L1_WIT_Y_DQ has sampling frequency higher than 256 Hz, decimating to the lower rate ...]
[> In get_sch_TF_MO_v9DQ_sma at 384
  In collect_schroeder_TF_v9DQ_sma at 479
  In Matlab_TFs at 499
  In LHO_Matlab_TFs at 141]
Error using decimate>validateinput (line 158)
The input signal X must be a double-precision vector.

So we investigated and fixed the problem which was basically :

Since we have higher sampling rates for the new witness channels recently implemented, (L1_WIT_$DOF_DQ / L2_WIT_$DOF_DQ), the function "get_sch_TF_M0_v9DQ_sma.m" was trying to downsample those channels to 256Hz right after getting the data out of the frame. If the function get_data failed (randomly the case), it would try to decimate an empty vector, and was returning the above error and quit the script. 

We modified get_sch_TF_M0_v9DQ_sma in order to make sure the data is beeing recovered in a while loop before decimating the signal.

I will run an other set of TF on ITMX tonight and commit the changes tomorrow if it succeeds

HAM6 Electrical Components Installation

Alexa, Kiwamu, Rich

Did more in-vacuum installation work in HAM6.  Tip/Tilts and Beam Diverters are all installed.  The only remaining electrical devices to install are the Picomotors.  It's getting a bit busy in there, and we didn't want to add more stuff without talking to the alignment folks.  Dogged things down with one dog each anticipating they will be moved.

******USE CARE MOVING THE TIP/TILTS, I TOOK THE OPTICS OFF THEIR STOPS******

Missing a few key electronics items in the chain, so electrical checkout is still pending on all these items.

Tip/Tilt OM1
Serial Number of Tip/Tilt stage - 002
External Cable Number 236
Flange D6-F10
Internal vacuum cable S1106728

Tip/Tilt OM2
Serial Number of Tip/Tilt stage - 004
External Cable Number 237
Flange D6-F11
Internal vacuum cable S1106834

Tip/Tilt OM3
Serial Number of Tip/Tilt stage - 033
External Cable Number 238
Flange D6-F12
Internal vacuum cable S1106830

Beam Diverter #1 (AS)
Diverter Serial Number 012
Flange: D6-F8
External Cable 317
Internal Vacuum Cable (Flange to Table Bracket) S1202649
Short Cable (Bracket to Diverter) S1202732

Beam Diverter #1 (OMC REFL)
Diverter Serial Number 019
Flange: D6-F9
External Cable 316
Internal Vacuum Cable (Flange to Table Bracket) S1202652
Short Cable (Bracket to Diverter) S1202730

Optical Lever Maintainence and Realignment HAM 2-3

Robert S. Thomas V.

After adjusting the pylon positions for the HAM 2&3 optical levers to relieve pressure off the bellows, we needed to do a realignment of the in-chamber transceiver optics.  This was completed relatively smoothly and from an optical lever stand point, we're ready for pump down. Yay.

Ops Summary

08:56 Louis going to end Y to work on cable cleanup on the VEA mezzanine
09:26 Betsy looking for parts in the LVEA
10:10 Mayflower metals to swap recycling bin
10:39 Justin transitioning the LVEA South Bay to laser hazard
Cleaning in end Y VEA
Cheryl, Kiwamu, Keita aligning the IMC
Kyle venting end Y
11:56 Cheryl going into HAM3
12:28 Cheryl, Kiwamu, Keita done with IMC work
12:29 Jeff B. done working in HAM6
13:25 Justin transitioned the LVEA to laser safe
Doug and Jason setting monuments at end Y
Calum, Kate, Norna installing baffle
14:34 - 14:50 Richard on corner station roof
Apollo breaking bolts on cyropump spool at end Y

OMC placed in HAM6

Koji A., Jeff B., Andres R., Jeff L.

The OMC was moved into HAM6 this morning.  The move from the cleanroom and into the chamber was smooth with no issues.  The OMC is sitting off to the North side of the ISI table to allow access for IAS.  The cookie cutter (used to position the OMC structure) is attached at the correct location on the ISI table for future use.  The structure is held with a few dog clamps.  The rest of the dog clamps, screws and washers are in a foil bag next to the structure in the chamber.

The two Jeffs took pictures of the OMC going in; a subset of these now sits in ResourceSpace.

Mapped ETMx Pitch Alignment Offset

While setting the ETMx pitch offset for the TMS alignment, I mapped the ETMx pitch alignment offset using my alignment equipment.  Attached is a .txt file of the raw data points.  Bottom line is:

• The sign is correct: + offset pitches the ETMx down, - offset pitches the ETMx up
• The offset does not pitch the ETMx 1:1 when measuring the actual pitch with the laser autocollimator

B&K Hammered MC1, PR3, and PRM

After fixing any loose dog clamps, and retorquing, Arnaud and I took B&K hammer measurements of the HAM2 PR3, PRM, and MC1 this morning.  We still need to do PR2 and MC3 (which has a temp IO alignment mirror nestled up against it's structure).  We took PR3 and PRM data with vibration absorbers on and off.  We only took MC1 data with the vibration absorbers on since they were already on and are difficult to remove and then replace.  Plots and statements to come.

Results are at alog 6014

LHO aLOG 6014 are different results -- from PR3, and they don't even include the results for that measurement. Arnaud and I will be processing and post all the B&K data from the HAM2, HAM3, and and BSC3 (ITMX) next week.