only h1fw0 restarts. 38 in total, see attached text file.

h1fw0 is unstable, but provided h1fw1 continues to be stable there is no data loss. LDAS are automatically archiving h1fw1's frames when they are unavailable from h1fw0. The default NDS is h1nds1 (which reads h1fw1's frames) so there is no discontinuity of data for NDS clients. The current uptime of h1fw0's full frames is 85%.

model restarts logged for Fri 04/Jul/2014
2014_07_04 03:14 h1fw0
2014_07_04 03:22 h1fw0
2014_07_04 03:30 h1fw0
2014_07_04 04:40 h1fw0
2014_07_04 05:38 h1fw0
2014_07_04 06:41 h1fw0
2014_07_04 07:09 h1fw0
2014_07_04 07:16 h1fw0
2014_07_04 07:32 h1fw0
2014_07_04 07:38 h1fw0
2014_07_04 08:25 h1fw0
2014_07_04 08:33 h1fw0
2014_07_04 09:18 h1fw0
2014_07_04 09:38 h1fw0
2014_07_04 10:07 h1fw0
2014_07_04 10:36 h1fw0
2014_07_04 12:32 h1fw0
2014_07_04 12:42 h1fw0
2014_07_04 13:13 h1fw0
2014_07_04 13:18 h1fw0
2014_07_04 13:23 h1fw0
2014_07_04 13:32 h1fw0
2014_07_04 13:39 h1fw0
2014_07_04 14:38 h1fw0
2014_07_04 15:36 h1fw0
2014_07_04 16:33 h1fw0
2014_07_04 17:30 h1fw0
2014_07_04 17:40 h1fw0
2014_07_04 18:40 h1fw0
2014_07_04 19:16 h1fw0
2014_07_04 19:41 h1fw0
2014_07_04 20:28 h1fw0
2014_07_04 20:38 h1fw0
2014_07_04 21:18 h1fw0
2014_07_04 21:18 h1fw0
2014_07_04 21:23 h1fw0
2014_07_04 21:29 h1fw0
2014_07_04 21:34 h1fw0
2014_07_04 21:34 h1fw0
2014_07_04 22:28 h1fw0
2014_07_04 22:34 h1fw0
2014_07_04 23:32 h1fw0
2014_07_04 23:37 h1fw0
2014_07_04 23:37 h1fw0

unexpected h1fw0 restarts. h1fw1 is stable, DAQ data is contiguous.

model restarts logged for Thu 03/Jul/2014
2014_07_03 04:30 h1fw0
2014_07_03 04:36 h1fw0
2014_07_03 11:31 h1fw0
2014_07_03 11:39 h1fw0

two pairs of unexpected restarts.

Aidan, Thomas, Matt, Jason

We aligned the in-chamber HAM4 HWS optics using the IAS beam this afternoon.

1. Matt adjusted the alignment of SR3 to center the IAS beam on SR2.

2. I confirmed the beam was centered on HWSY STEER M1 (the transmission through SR2).

3. I adjusted HWSY STEER M1 to center the beam on HWSY STEER M2

4. Matt adjusted HWSY STEER M2 to center the beam on HWSY STEER M3

5. Matt adjusted HWSY STEER M3 to center the beam on the HWSY VAC LENS. This also centered the red beam on the installed viewport emulator.

6. Matt adjusted the HWSY DCBS by M2 such that the reflection off this optic, which will be 1064nm leakage, was captured by the HWSY scraper baffle (in the crook of the baffle on the -Y side of it). He also confirmed that the beam was centered on that DCBS. There were two reflections from the DCBS that were horizontally separated. 

7. I adjusted HWSX STEER M1 to center the beam on HWSX STEER M2. 

8. Matt adjusted HWSX STEER M2 and M3 to center the beam on M3 and on the viewport emulator (without HWSX VAC LENS installed)

9. Matt installed HWSX VAC LENS to return the beam to the same point on the viewport emulator

10. Matt adjusted HWSX DCBS to put the reflection of the red beam off that optic into the crook of the HWSX scraper baffle in the -Y direction. There were two reflections from the DCBS - one was at the same height as the incoming beam and the other was angled down and in the -Y direction. 

11. Since I'd forgotten this step to start with, I moved HWSX STEER M1 ~5mm parallel to its surface to make sure the beam was centered on the aperture of that optic. The distance of the beam from the edge of the aperture is shown in the attached PDF. We also placed a target far downstream of this optic, noted the position of the beam before the optic was moved and returned the beam to that position after the optic was moved to ensure the alignment was not affected.

Photos of the optics are attached. We took several shots of HWSX STEER M1 and HWSX STEER M2 as these optics were moved from what is shown in the H1 HAM4 assembly drawing.

HAM5

In cleanroom

All...zero counts

In chamber start of work

0.3um..10 counts

0.5um...10 counts

0.7um..10 counts

1.0 um.....10 counts

remainder...zero counts

In chamber end of work

0.3um...75 counts

remainder zero counts

HAM4

In cleanroom

All zero counts

In chamber start of work

Dont know..Thomas took the measurement

In chamber end of work

All zero counts

This is a summary of the state of the HAM4 and HAM 5 chambers:

HAM5

• The ISI is half locked. The lockers on the south side are locked, but on the north side free.
• SR3 all stages are locked...however the optic is locked in such a way that it sends the HeNe from the SR3 optic onto the centre (ish) of the SR2 optic (still needs investigation into whats going on with SR3 pitch)
• SRM is unlocked.
• Nothing moved on HAM5 table by me/us

HAM4

• ISI is locked
• SR2 is unlocked
• HWS optic positions on table were moved so a rebalance of ISI necessary
• I noticed (the hard way), that it appears that at least 3 of the top mass weights on the 2 stack high SEI masses on the ISI are not bolted to the bottom weight and so can thus move. From memory one is by the north door, one in centre (ish) of the table and one on west side of table
• Note: I believe because of the low purge air a bug flew into the chamber and onto the table. Luckily I was able to get him and wipe in that area, but we need to be vigilant and make sure soft door covers are up when not actively working in the chamber

Matt H, Jason O, Aidan B, Thomas V

Aidan will write an alog regarding the alignment of the HWS optics in HAM4, this is more about the setup to do it.

We haven't been able to solve why the SR3 is pitched low and so I locked the face EQ stops of all three stages, then with Jason making sure the pointing of the HeNe of the total station was correct and that the beam splitter offsets were engaged and damping on, and Aidan standing at HAM4 directing me using the headsets, I altered the EQ stops on the optic of SR3 so as to steer the beam onto the center of SR2 optic (or as close as we could tell it was to center).

This was enough to allow the alignment of the HWS to begin. Just for curiosity we looked at how the beam was going from SR2 to SRM. Luckily we could see it and so we could steer the HeNe beam onto roughly the centre of SRM with ~1500 offset in pitch and ~1800 offset value in YAW on SR2 upper mass (note Jason seemed to think that the sign of which way the beam went up and down when he provided an offset was flipped. Maybe someone wants to look into that).  So thats a good sign.

Note: The HWS optics were aligned WITHOUT any offsets applied to SR2.

7:00 PRAXIAR Delivery to CP1
9:30-11:14 -Heading into the LVEA to work on HAM2 PSL ISS PD array cables.- Rick S/Peter/Michael
9:32- 10:45 Going into the LVEA to work on several Dust Monitors – Jeff B
10:25-11:59 Visiting End Y (cleaning) – Karen
11:00-11:58 Heading to EndX to replace a bench – Jeff B
11:03- 12:00 Continuing work on HAM5 (More investigation on SR3 pitch situation) –Matt/Jason
11:16- 12:18 Work on HAM4 HWS optics - Thomas/Aidan 
13:13- Heading back to HAM5 – Matt H.
13:00- 15:57 Back to work on HAM4 HWS Optics Alignment - Thomas/Jason/Aidan 

Aidan, Thomas

As we discovered yesterday, two HWS optics (HWSX STEER M1 and HWSX STEER M2) and the HWS scraper baffle are out of position with respect to each other. It turned out that the assembly diagram for the H1 HWSX HAM4 optics is incorrect (when compared to the actual optical coordinates, E1100463, derived from the HWSX optical solution, T1000179). Also, H1 and L1 coordinates are supposed to be the same. The following table summarizes the problem in the documentation:

So ... we have moved the offending HWS-X mirrors (HWSX STEER M1, HWSX STEER M2 and HWSX STEER M3) in HAM4 to the correct positions specified by the L1 assembly diagram. We will update the H1 assembly diagram to reflect this. Photographs will be attached ...

Alignment of the HAM4 HWS optics with the IAS laser is taking place this afternoon ..

Jason O, Matt H

So we decided to see if we could find a simple smoking gun to why the SR3 pitch appears to be so far out.

Using a clean scale and scale stand I measured the height of the HeNe beam behind the SR3 optic. With the BS optic pitch and yaw offsets on (we didnt change the values just used what was already in the fields), we measured the HeNe beam to be  at ~205mm on the scale. The scale stand holder is ~18mm high so the beam is ~223mm high. Jason looked it up and should be 229mm, but I was measuring ~8-10 inches behind the optic (in front of the baffle), and the beam from the BS to SR3 is angled up, so to fist order we are close to the center of the optic. Even so as the SR3 optic is curved, being low should help direct it up.

Also I locked the face stops of the three stages so I could push on the mechanical sliders to see if perhaps one was loose and had moved. They all appear tight, so doesn't appear to be that.

I cant really get a good look at the suspension due to not being able to lock the ISI (and thus not being able to get onto the table to get at the angles I need to look at), so I think I will try to just use the EQ stops to move the optic to direct the beam from SR3 onto SR2, until a more complete investigation can be made. Also will be interesting to see how the beam comes off SR2 and towards SRM.

The pondering as to what is going on continues

And she's not even here today .....

PeterK, MichaelL, JeffB, RickS

Betsy located some aluminum ClassA parts yesterday that we were able to use today to improvise some strain relief for the PSL ISS PD array cables in HAM2.

Jeff and Michael were able to locate some PEEK cable ties (very handy) that we used to dress the cables to the improvised bracket (see attached photos).

Peter is doing one final set of electrical tests now, after which we will consider the ISS PD installation complete (and successful).

model restarts logged for Wed 02/Jul/2014
2014_07_02 10:56 h1iopsusauxey
2014_07_02 10:56 h1susauxey
2014_07_02 11:00 h1iopsusauxey
2014_07_02 11:00 h1susauxey
2014_07_02 11:02 h1iopsusey
2014_07_02 11:02 h1susetmy
2014_07_02 11:02 h1sustmsy

no unexpected restarts. Restarts to recover from DC power loss.

Used: /ligo/cds/lho/h0/burt/2014/07/01/00:00/h0fmcs.snap
This sets the alarm levels and H0:FMC-MILLIAMP_MAXVAL.

Particle counts

HAM2

Morning ISS work. In cleanroom:

All counts zero

In chamber start of session:

All counts zero

In chamber end of morning:

05um..20 counts

remainder...zero

HAM4

Afternoon HWS work

In cleanroom:

0.3um....70 counts

0.5um.....20 counts

0.7um...10 counts

remainder...zero counts

In chamber start of work:

0.3um...30 counts

remainder...zero counts

In chamber end of work:

Forgot....was a long day again

HAM5

Afternoon work removing door/HWS work

In cleanroom sart of work:

all...zero counts

In chamber start of work:

0.5um...20 counts

remainder zero counts

In chamber end of work:

Again forgot....was a long day

Matt H, Aidan B, Thomas V, Jason, Apollo

Okay so we jinxed ourselves when we said..okay this should only take a couple hours. We have run into multiple problems.  Here we go...I am going to have some fun with this just to lighten the mood:

SR2

As reported in a previous alog SR2 had its first contact layer on the HR surface. Okay no big deal as it had its peek tab on it so simply locked the optic, and with the top gun ioniser in hand, removed the first contact (left a little of the alignment layer behind :-(..but we can get that when we re-first contact), unlocked the optic and that suspension ready (Note: ISI unlocked).

SR3

As also reported in a previous alog, SR3 also has its first contact layer on it. Okay so slightly bigger deal as the doors on HAM5. So Apollo kindly removed the south door and yep there is first contact on the HR surface...but no peek tab. Also the ISI is unlocked. Betsy asked me to look to see if the magnets that they thnk were knocked off the IM on SR3 are really gone. And I am sorry to say that yes the LL and UR IM magnets are gone...and I couldn't find them. I did notice the EQ stops on the top and IM stage were wwwwwaaaaaaayyyyyyyy back (optic level was at the distance we usually set it), so I am guessing these stops were potentially forgotten about. I have set what I could easily reach/see closer. Anyways so I locked the south side lockers and the front and back face stops of the optic. After gently easing myself into the chamber I then painted on the peek tab and waited.

Whilst waiting for the first contact to dry we turned on the HeNe laser and first bit of good news is we see the two HeNe beams expect to see (see pic two beams). Maybe a little low though (hard to say exactly).  So then pulled the FC again using the top gun (see pic peeling first contact). Looking with a flashlight there is more of the alignment layer left behind. Basically where the alignment layer met the thicker layer in a semi circle from around the 1pm position to the 5pm position. Shouldn't be in the beam path though....and again because first contacting optics again before close out should be able to get it then. I then climbed back out of chamber and unlocked first the optic of SR3 and then the ISI.

Okay so now we thought...great thats all the problems. Lets start aligning. Be done in an hour.

HAM4

Aidan stepped up to HAM4 and it immediately was...umm guys we have a problem. The baffle doesn't line up with the beam path between two mirrors. And he was right (see pic baffle mirror out of place). The red line I have drawn shows where the beam roughly goes and that should be going through the center of the baffle. A quick check of the SYS drawings and yep everything is where it should be as per that...so somewhere along the line must of been a miscommunication.

We found an added suprise of a loose SEI rectangular mass sitting in the tube near the HAM4 ISI. Its wrapped in foil and sitting outside the chamber near the North HAM4 door at the moment

Okay so no big deal. We move a baffle or a mirror (or both) and then the ISI gets rebalanced at some stage....we can still get this done tonight.

SR3 pitch

Okay so the beams bouncing off SR3 but we cant find it. So I climb back into SR2 and eventually find the beams coming back towards SR2. Unfortunately the beam looks like its 4-5 inches to low from going through the center of the baffle (see pic front reflection low). Heintze the others say..you looking at the wrong beam. No I say thats it as the back reflected beam is even lower (see pic front and back reflection). I have tried to take a better picture of just how low it is compared to where it should be (see pic beam and where it should be). It should be going through the centre of the baffle and thats 4 or 5 inches low.

So we tried pitching the optic using the BOSEMs. First off there was some queries as if the calibration is right. Can someone please quickly look at that. Then we seemed to run out of BOSEM range at around 5000 counts I think Jason said....with the beam still 1-2 inches to low on the SR2 optic. We thought maybe the suspension was grounding out on the EQ stops and I had a look and yes some of the optic ones were touching, but even after I backed them off we are still to low.

And so thats where we called it quits...without having even really officially starting the HWS alignment but having spent 6 hours on it (I do still have the south side of HAM5 ISI still locked). Jason had a look at his IAS numbers and will add a comment to this alog. So I guess we have a meeting of the minds to decide how to proceed from here.

SO much for "this will only take an hour or two"....lol. You just have to laugh in these situations............

To support the OutputFaraday Isolator Suspension (OFIS), I created a new Mathematica single pendulum model with two blades but four wires (as opposed to two for HAUX/HTTS). It lives in the SUS SVN at

^/trunk/Common/MathematicaModels/FourWireSimpleBlades

I exported Matlab matrix elements symbexport1blades4wiresfull.m from the Mathematica, copied them to the Matlab single model at

^/trunk/MatlabTools/SingleModel_Production

and adjusted the ssmake1MB.m file to use them when the new parameters pend.dx1 and pend.dx2 are defined. These represent the double-sided wire attachment point separations in the Mathematica x direction (normal to the line between the blade tips).

Because the OFIS is TMTS-style with the optic axis of the payload at right angles to the superstructure compared to most other suspensions, I created a new define_ofisModel_insandouts.m file which mapped MEDM-style L/T/V/R/P/Y to Mathematica y/x/z/pitch/roll/yaw. Note that because of the limitations of the data structure (swaps but no sign changes), I wasn't able to do x->-T, y->L, z->V but had to settle for x->T, y->L, z->V, which is left-handed.

I created a case 20140625OFIS of the Mathematica model using mostly data from D0900623-v8 and D0900136-v5. I chose the blade stiffness to match the measured V mode frequency of 1.509 Hz from LHO alog 11530 and added damping to match the measured L, T and V Q's. I also added a token amount of damping in each angular DOF. The parameters and mode frequencies are summarized at 

https://awiki.ligo-wa.caltech.edu/aLIGO/Suspensions/OpsManual/OFIS/Models/20140625OFIS

The model L and T modes (0.6374 and 0.6306 Hz) are in good agreement with the measured L and T modes (0.6211 and 0.6248 Hz) without any additional tweaks. Unfortunately I didn't do measurements of the angular modes because the damping spec was only about the linear modes. Note the obnoxious R mode at 25.4 Hz.

I exported a Matlab parameter set and copied it to the Matlab directory as ofisopt_damp.m. 

I added a new clause to the switch statement in generate_Single_Model_Production.m to associate the new parameter set with the tag ofisopt_damp. I also added lines to use the new define_ofisModel_insandouts.m when the parameter file name starts with 'ofis', but left them disabled initially.

I adapted plottest.m to do a comparison plot between TFs generated in Matlab (using the standard define_singleModel_insandouts.m), and TF data in FourWireSimpleBlades_20140625OFIS_TF.m exported from Mathematica. After some debugging I got perfect agreement.

In the process of debugging I realized that the damping parameter names being exported from Mathematica (e.g., pend.bx0) didn't match what the Matlab was expecting (e.g., pend.B0xx), so I changed the Matlab to match the Mathematica. I also adjusted the handcrafted (not exported) hauxopt_damp.m and httsopt_damp.m that I'd created previously.

Finally I enabled the code in generate_Single_Model_Production.m to select define_ofisModel_insandouts.m. The rewiring was copied from TMTS and is probably right but I can't think of a good additional test because the OFIS has no sensors or actuators so we can't do measured TFs to compare.

Everything has been committed to the SVN.