The 4 R's on H1 SUS QUADs (Yesterday's SUS ECRs E1300578 and E1300261 Progress)

J. Kissel 

I found a few bugs in my modifications to the QUAD models yesterday, once I began to make MEDM fields for all the new variables (which, took so long because of Wednesday's meeting hell) -- and also, after speaking with Kiwamu, Jamie, Jenne, Rana, and Joe Betz, I revamped how the lock-in amplifier part was installed, so that he LSC, ASC, and SUS models are all using identical Simulink parts, if not at least a common MEDM screen. 

This required me to perform the 4 R's:
Re-compile
Re-install
Re-start
and
Re-store (full functionality) [an oft-forgotten step]
all four QUAD models, and restart the Frame Builder (FB) / Data Concentrator (DC) / Data Acquisition System (DAQ) / h1dc0.

Note -- because Robert's been working with ITMY, I 4R'ed h1susetmy, h1susetmx, and h1susitmx and rebooted the DAQ last night before I left for the evening, and then did h1susitmy when Robert gave the OK.
Note -- I'll post pretty pictures and an explanation later, but the revamp of the lock-in part was to go from sending one lock-in oscillator excitation signal to each coil, I'm sending one for pitch and one for yaw.

Alignment of ETMx from SEI/HEPI

Last Thursday, Jason, Greg & Jim logged the results 8150 of the Initial Alignment of the ETMx using the HEPI load Springs. Having been assessed as aligned, SEI proceeded with HEPI Actuator attachment. That concluded Tuesday with Greg logging the dial indicator readings in 8225.  While these readings indicate some CCW motion of the platform, they are of order <100urad: taking the single largest reading as the amount of rotation, .008" over the 79" from center of table to DI location (end of Support Tube) gives 101urads.  The actual rotation is less as other readings indicate translations rather than pure rotation.

Yesterday IAS gave a look and directed SEI to rotate CW ~500urads.  We did this and brought the Yaw error down to 25urads.  In this position, the dial indicators read:

Pier	1	2	3	4
X	.511			.625
Y	.233	.297	.669	.509
Z	.414	.422	.409	.480

Computing the change from last Thursday's aligned readings gives in mils:

Pier	1	2	3	4
X	16N			10S
Y	37E	32W	32W	37E
Z	2U	2U	3U	3U

Given that the Ends of the Support Tubes are not at 45degrees from table center, the X DIs see a much smaller component of the true rotation.  The Y DIs do see a correspondingly much greater (than the Xs) amount of the rotation.  Using the Y average 0.345" over 79" gives 443urads of rotation CW relative to the aligned position from last Thursday.  In other words, we were aligned last Thursday, yesterday we rotated 443urads from that position and now we are again in alignment.

HEPI HAM 2 and HAM 6

We are working on the HEPI tilt decoupling on HAM2:

- The latest set of filters designed for this unit has been installed

- Turned on the HEPI position loops (5 Hz ugf) and ISI isolation (high blend, control level 2).

- Set up tilt coupling measurements parameters:
   Added cases for that in exc channel lists (to drive X and Y only) and resp channel list (to record HEPI and ISI)
   Set up drive values:
   200 um (200000counts excitation at the error point) for drives from quasi DC up to 100 mHz.
   50 um (50000counts excitation at the error point) for drives up from 100 mHz to 700 mHz.
   2 um (2000counts excitation at the error point) for drives between 700 mHz and 10 Hz.   

- Started the measurements. They should be completed around 9am tomorrow morning.


Things to look at more carefully tomorrow:
- I had to add quite a lot of phase at low frequency in the Z loop, so we need to check there is no confusion with what we think is the latest version of filters for this unit. (the non-boosted open loop had only 11 degrees of phase at 0.2 Hz, so it was close from being conditionally stable, and therefore ringing while ramping on the loop). Made it larger (>45 degrees). The loop turns on well now. 
- Could not turn on the pringle loops
- Could not offset using the bias block
- The blend offset was off because of the "IPS_Switch". Could not find this switch in the MEDM screens. Turned it on using "caput".


HAM 6: We have installed and turned on the position sensor loops controller designed by Jim and Rich last week. Some work need to be done on the HAM-ISI to be ready to drive for tilt decoupling.

ETMx TFs running again

In order to re-assess the ETMx pointing status, Arnaud agreed to re-run fresh TFs tonight.  Hopefully they are running.

Apollo work for 23 Oct 2013

Randy and Scott retrieved the garbing rack and bench from X End-Buffer cleanroom for use in the LVEA-Test Stand area. They spent the rest of the day working on feedthroughs at BSC3 and completed those installations by the end of the day. Tyler helped with CPB stuff all day.  

RCG2.8 testing completed, reverted back to RCG2.7.2

Rolf, Jim, Dave

After running at RCG2.8 for several hours we reverted the end station and ISC systems back to RCG2.7.2.

The 2.8 test was a success, we did not find any data errors transferring slow data directly to the data concentrator. CPU usage, network usages and frame sizes changed as expected.

During the make install-modelname process to reinstall 2.7.2, I accidentally recompiled the h1susauxex, h1iscex and h1susex models. There does not appear to be any local changes to these models, so the same code should be running on these systems. Jeff subsequently changed the quad models after we had reverted.

ETMx/ISI in situ current measurements after redoing the IAS instrument setups

Jason and I rechecked the alignment equipment as it was left setup from this morning and found no changes (YAW was at 25micro radians CCW needing to rotate CW to fix).
Next we broke down and reset all of IAS equipment again. We found a YAW rotation of 65 micro radians CCW (a delta of 40 micro radians)needing a CW fix.
Considering the complexity of the whole setup, the number of equipment pieces and fairly long shots this difference of 40 micro radians (8 arc sec) is probably not out of line.

Ball is now in the ISI vs SUS court

New sus ETMX model running about 10uS faster

Jeff, Dave.

After Jeff installed the new h1susetmx model I plotted its cpu usage histogram and compared this with the previous version. Plotted is the histogram of the number of cycles of the 16384 cycles in one second against the cpu processing time for that cycle (in microseconds, 60us being the max). Most cycles were taking 45uS and are now taking 36uS. There are alway a few outliers at the beginning of the second when certain housekeeping activities are process. These usually take an extra 6uS, so the CPU max was 52uS and is now 41us.

Removed portion of GV7's annulus piping to allow manifold crypump baffle installation

Ops

 

Morning Meeting Notes - from Corey

Work Permits

 

ETMx

HEPI:  Actuators attached (but galled bolt yesterday slowed things), see a little bit of a tilt

--look at level (Doug or Hugh)

Have Thomas do ACB checks, and then do ETMx alignment

After alignment, unlock ISI & run TFs

 

ITMx

Payload last night & need to check lockers

Dropping cables down

 

AOS (Cryopump Baffle)

parts staged

ready to assemble this morning(Mitch/Gerardo/Thomas)

 

Apollo

BSC3 feed-thrus

 

Notes from the rest of the day: Cheryl

 

Facilities:

X arm insulation removal

Rollup doors - EY and MY

Roofing continues

 

LVEA general work:

ACB assembly continues

 

Control Room:

ITMX model restart

DAC restart

EX restart

 

Many more restarts - testing code - Rolf and Dave/CDS

- code tested today will be backed out tonight starting around 4PM

- Dave's estimate is that it will take an hour to load and restart code

 

EX:

 - Thomas is back, no others there to my knowledge

TCS status update

A TCS general status has been requested. This report will focus on TCS in-vac readiness. BSCs 1, 2, and 3 will be populated with steering mirrors. BSCs 1 and 3 are populated with D1101013 assemblies. BSC 2 is populated with D1101851 assemblies. 

Both D1101013 assemblies are mostly complete. The wedge parts that attach to the chamber are kitted and ready for install. The mirrors and their sub-assembly mount D1102029 remain to be kitted. The mirrors themselves are waiting for two FTIR results to return. Most of them passed, however, two failed (E1300748) and were recleaned by Joe DeRenzis and myself. 

Both D1101851 assemblies are installed in BSC 2. They are mostly complete, the only thing needed is to install the SM2 steering mirrors and related hardware. 

Hopefully the mirror sub-assemblies can be kitted soon and TCS in-vac install will be dependent on FTIR results / door removal.

2.8 testing on H1 front end computers

We are currently testing RCG2.8 on the front end systems which send their DAQ data to the second 10GE port on h1dc0. The full list of computers is:

h1oaf0, h1lsc0, h1asc0, h1pemmx, h1susauxey, h1iscey, h1susey, h1seiey, h1susauxex, h1iscex, h1susex, h1seiex.

All models running on these FEs were recompiled against the latest RCG trunk (the branch2.8 is a few days old, so we elected to compile against the trunk for this test). The exceptions are the SUSTMSX and SUSTMSY whose models are being worked on and did not compile, these were left at their 2.7.2 version.

The LVEA test stand was also left at 2.7.2 even though they are part of the block of FEs writing to this h1dc0 port.

The DAQ was reconfigured to remove the EDCU ini files associated with the upgraded models.

The front ends were restarted, no problems were observed.

We tested various slow (16Hz) channels which are now being transmitted along with the fast data over the DAQ network and not being acquired by the EDCU via the FrontEnd network, no problems have been observed.

The sus team are damping ETMX with the new version of h1susetmx with no problems being observed.

The ODC team checked their slow channels with no problems being seen.

As a demonstration of the synchronisity of the new 16Hz slow channels, the attachment shows 1 second of full data for a DuoTone slow channel for 2.8 (left plot) and 2.7.2 (right plot), showing true aliasing of the 960Hz Sine Wave signal with the new system.

We monitored the network bandwidth used by the second 10GE port, as measured by the switch, increased by 10% (200Mbps to 220Mbps).

The frame size did not increase beyond the noise level.

BSC3 status

Since SEI/IAS/ACB people were still sorting alignment issues with the ETMx cartridge, we hopped into BSC3 to make some progress on ITMx.  SEI still needs to finish payload and balance but we suspended the masses in prep for controls testing and future alignment.  We added the witness plate to the suspension and removed all temp payload EQ stop bars.  Payload is correct for SEI balance.

With Arnaud, we reset all 12 top stage BOSEM offsets and gains (to compare with test stand values) and then set the OSEMs to 50% OLV.  We attempted damping, but both chains had watchdog trips within seconds of enabling the DOFs.  We have rechecked that we do not (think) we have mechanical rubbing so will revisit the software/EE guys for further assistance.

BSC3 Draw Fan enabled

I just now turned on the horizontal draw fan that I have parked in the cleanroom wall near the chamber door. I would expect to see some higher than normal particle counts on unit #3 as the turbulent flow moves particulate out of the room likely from under the chamber, etc.

SR03-02 in air bake oven for magnet cure - and water mopped up

Today, I went to the LSB lab to put the SR03-02 optic in the oven and found water all over the floor in the lab.  A quick call to SKi who came down and repaired a fitting leak he generated yesterday - followed by a good mopping up of water and floor cleaning.  A small amount of water leaked into the fiber lab, but did not disturb anything on the floor.

 

SO, the labs are clean.  And as of tomorrow, the SR03 will be ready to be suspended.

SRM ready for Phase 2b testing

This morning, Travis finished swapping the incorrect blade tip EQ stops on the SRM top mass with the correct ones and then reset the BOSEMs to 50% OLV.  This supsension is ready for Phase 2b testing.  Note, we skipped Phase 2a testing since the "optic" used for this round of the SRM installation is a dummy 2" optic in a metal dummy mass.

Updated some ISC corners of the userapps repo

J. Kissel

In order to grab a few necessary parts for the SUS model/MEDM screen upgrades, I've updated a few ISC and CDS corners of the cds_user_apps repo. I checked before I updated to be sure there were no local modifications that would be in conflict with the updates, as well as making sure I didn't receive anything that I didn't expect to. This is done with an 
svn st -u
in the folders of interest. The "-u" tells you what you will get upon update (with a " * " indicating you will receive an update, and if the revision number is next to the " * ", it indicates you'll get an update to an already existing file.)

Here're the results of what was updated:
/opt/rtcds/userapps/release/lsc/common/medm
A    LSC_CUST_UGF.adl
U    LSC_CUST_OUT_MTRX.adl
A    LSC_CUST_LOCKIN_DEMOD.adl
A    LSC_TRIG_TEST_OVERVIEW.adl
U    LSC_CUST_POW_NORM.adl
A    LSC_CUST_LOCKIN_DEMOD_MTRX.adl
U    LSC_RFPD_DEMOD.adl
A    LSC_TRIG_TEST.adl
U    LSC_CUST_LOCKIN.adl

/opt/rtcds/userapps/release/asc/l1/medm
A    LSC_POW_NORM_P.adl
A    L1ASC_CUST_POW_NORM.adl
A    L1ASC_QPD_MTRX.adl
U    L1ASC_INMAT_Y.adl
U    L1ASC_OUTMAT_Y.adl
A    LSC_POW_NORM_Y.adl
U    L1ASC_OVERVIEW.adl
A    L1ASC_WFS_INMATRIX_QUADRATURE.adl

/opt/rtcds/userapps/release/cds/common/med
U    CUST_CAMERA.adl
U    L1ASC_TRANS_POP_QPD.adl
A    L1ASC_SPARE_QPD.adl
U    L1ASC_WFS_SETTINGS.adl
U    L1ASC_AS_REFL_QPD.adl
A    L1ASC_QPD_SEG.adl
U    L1ASC_WFS_QUADRATURE_FILTERS.adl
A    L1ASC_QPD.adl
A    L1ASC_LKIN_INMAT.adl
A    L1ASC_CUST_LOCKIN_DEMOD.adl
U    L1ASC_INMAT_P.adl
U    L1ASC_OUTMAT_P.adl
A    IMC_WFS_DC_QPD_MTRX.adl

These folders are all now updated to version 6036.